[PATCH 01/33] clk_ops: change round_rate() to return unsigned long

[PATCH 01/33] clk_ops: change round_rate() to return unsigned long

[Bryan O'Donoghue]

Right now it is not possible to return a value larger than LONG_MAX on 32
bit systems. You can pass a rate of ULONG_MAX but can't return anything
past LONG_MAX due to the fact both the rounded_rate and negative error
codes are represented in the return value of round_rate().

Most implementations either return zero on error or don't return error
codes at all. A minority of implementations do return a negative number -
typically -EINVAL or -ENODEV.

At the higher level then callers of round_rate() typically and rightly
check for a value of <= 0.

It is possible then to convert round_rate() to an unsigned long return
value and change error code indication for the minority from -ERRORCODE to
a simple 0.

This patch is the first step in making it possible to scale round_rate past
LONG_MAX, later patches will change the previously mentioned minority of
round_rate() implementations to return zero only on error if those
implementations currently return a negative error number. Implementations
that do not return an error code of < 0 will be left as-is.

Signed-off-by: Bryan O'Donoghue <pure.logic@nexus-software.ie>
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: linux-omap@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: linux-clk@vger.kernel.org
Cc: linux-rpi-kernel@lists.infradead.org
Cc: patches@opensource.cirrus.com
Cc: uclinux-h8-devel@lists.sourceforge.jp
Cc: linux-amlogic@lists.infradead.org
Cc: linux-arm-msm@vger.kernel.org
Cc: linux-soc@vger.kernel.org
Cc: linux-renesas-soc@vger.kernel.org
Cc: linux-rockchip@lists.infradead.org
Cc: linux-samsung-soc@vger.kernel.org
Cc: linux-tegra@vger.kernel.org
Cc: dri-devel@lists.freedesktop.org
Cc: linux-mediatek@lists.infradead.org
Cc: freedreno@lists.freedesktop.org
Cc: linux-media@vger.kernel.org
Cc: linux-rtc@vger.kernel.org
---
 arch/arm/mach-omap2/clkt2xxx_virt_prcm_set.c    |  4 ++--
 arch/arm/mach-omap2/clock2xxx.h                 |  4 ++--
 arch/arm/mach-vexpress/spc.c                    |  4 ++--
 arch/mips/alchemy/common/clock.c                |  2 +-
 drivers/clk/at91/clk-audio-pll.c                | 10 ++++++----
 drivers/clk/at91/clk-h32mx.c                    |  5 +++--
 drivers/clk/at91/clk-peripheral.c               |  6 +++---
 drivers/clk/at91/clk-pll.c                      |  2 +-
 drivers/clk/at91/clk-plldiv.c                   |  5 +++--
 drivers/clk/at91/clk-smd.c                      |  5 +++--
 drivers/clk/at91/clk-usb.c                      |  5 +++--
 drivers/clk/axs10x/i2s_pll_clock.c              |  4 ++--
 drivers/clk/axs10x/pll_clock.c                  |  5 +++--
 drivers/clk/bcm/clk-bcm2835.c                   | 11 ++++++-----
 drivers/clk/bcm/clk-iproc-asiu.c                |  5 +++--
 drivers/clk/bcm/clk-iproc-pll.c                 |  8 ++++----
 drivers/clk/clk-axi-clkgen.c                    |  5 +++--
 drivers/clk/clk-cdce706.c                       | 15 +++++++++------
 drivers/clk/clk-cdce925.c                       | 15 +++++++++------
 drivers/clk/clk-composite.c                     |  5 +++--
 drivers/clk/clk-cs2000-cp.c                     |  4 ++--
 drivers/clk/clk-divider.c                       |  5 +++--
 drivers/clk/clk-fixed-factor.c                  |  5 +++--
 drivers/clk/clk-fractional-divider.c            |  4 ++--
 drivers/clk/clk-gemini.c                        |  5 +++--
 drivers/clk/clk-highbank.c                      | 10 ++++++----
 drivers/clk/clk-hsdk-pll.c                      |  4 ++--
 drivers/clk/clk-multiplier.c                    |  5 +++--
 drivers/clk/clk-scpi.c                          |  8 ++++----
 drivers/clk/clk-si514.c                         |  4 ++--
 drivers/clk/clk-si5351.c                        | 15 +++++++++------
 drivers/clk/clk-si570.c                         |  4 ++--
 drivers/clk/clk-stm32f4.c                       | 15 +++++++++------
 drivers/clk/clk-u300.c                          |  4 ++--
 drivers/clk/clk-versaclock5.c                   | 12 ++++++------
 drivers/clk/clk-vt8500.c                        |  9 +++++----
 drivers/clk/clk-wm831x.c                        |  5 +++--
 drivers/clk/clk-xgene.c                         |  9 +++++----
 drivers/clk/h8300/clk-h8s2678.c                 |  4 ++--
 drivers/clk/hisilicon/clk-hi6220-stub.c         |  5 +++--
 drivers/clk/hisilicon/clkdivider-hi6220.c       |  5 +++--
 drivers/clk/imx/clk-busy.c                      |  5 +++--
 drivers/clk/imx/clk-cpu.c                       |  4 ++--
 drivers/clk/imx/clk-fixup-div.c                 |  5 +++--
 drivers/clk/imx/clk-pfd.c                       |  4 ++--
 drivers/clk/imx/clk-pllv2.c                     |  4 ++--
 drivers/clk/imx/clk-pllv3.c                     | 19 +++++++++++--------
 drivers/clk/ingenic/cgu.c                       |  4 ++--
 drivers/clk/ingenic/jz4780-cgu.c                |  5 +++--
 drivers/clk/mediatek/clk-pll.c                  |  4 ++--
 drivers/clk/meson/clk-audio-divider.c           |  6 +++---
 drivers/clk/meson/clk-cpu.c                     |  5 +++--
 drivers/clk/meson/clk-pll.c                     |  5 +++--
 drivers/clk/meson/gxbb-aoclk-32k.c              |  5 +++--
 drivers/clk/microchip/clk-core.c                | 12 ++++++------
 drivers/clk/mmp/clk-frac.c                      |  5 +++--
 drivers/clk/mvebu/clk-corediv.c                 |  5 +++--
 drivers/clk/mvebu/clk-cpu.c                     |  5 +++--
 drivers/clk/mvebu/dove-divider.c                |  4 ++--
 drivers/clk/mxs/clk-div.c                       |  4 ++--
 drivers/clk/mxs/clk-frac.c                      |  4 ++--
 drivers/clk/mxs/clk-ref.c                       |  4 ++--
 drivers/clk/nxp/clk-lpc18xx-cgu.c               |  5 +++--
 drivers/clk/nxp/clk-lpc32xx.c                   | 15 +++++++++------
 drivers/clk/pistachio/clk-pll.c                 |  4 ++--
 drivers/clk/qcom/clk-alpha-pll.c                |  7 ++++---
 drivers/clk/qcom/clk-regmap-divider.c           |  4 ++--
 drivers/clk/qcom/clk-rpm.c                      |  4 ++--
 drivers/clk/qcom/clk-smd-rpm.c                  |  5 +++--
 drivers/clk/qcom/gcc-ipq4019.c                  |  5 +++--
 drivers/clk/renesas/clk-div6.c                  |  5 +++--
 drivers/clk/renesas/clk-rcar-gen2.c             |  4 ++--
 drivers/clk/renesas/rcar-gen2-cpg.c             |  4 ++--
 drivers/clk/renesas/rcar-gen3-cpg.c             |  5 +++--
 drivers/clk/rockchip/clk-ddr.c                  |  6 +++---
 drivers/clk/rockchip/clk-pll.c                  |  5 +++--
 drivers/clk/samsung/clk-cpu.c                   |  5 +++--
 drivers/clk/samsung/clk-pll.c                   |  5 +++--
 drivers/clk/sirf/clk-atlas7.c                   |  4 ++--
 drivers/clk/sirf/clk-common.c                   | 12 ++++++------
 drivers/clk/spear/clk-aux-synth.c               |  4 ++--
 drivers/clk/spear/clk-frac-synth.c              |  4 ++--
 drivers/clk/spear/clk-gpt-synth.c               |  4 ++--
 drivers/clk/spear/clk-vco-pll.c                 | 13 +++++++------
 drivers/clk/spear/clk.c                         |  7 ++++---
 drivers/clk/spear/clk.h                         |  7 ++++---
 drivers/clk/st/clk-flexgen.c                    |  4 ++--
 drivers/clk/st/clkgen-fsyn.c                    | 10 +++++-----
 drivers/clk/st/clkgen-pll.c                     | 10 ++++++----
 drivers/clk/sunxi-ng/ccu_nk.c                   |  4 ++--
 drivers/clk/sunxi-ng/ccu_nkmp.c                 |  4 ++--
 drivers/clk/sunxi-ng/ccu_nm.c                   |  4 ++--
 drivers/clk/tegra/clk-audio-sync.c              |  5 +++--
 drivers/clk/tegra/clk-bpmp.c                    |  5 +++--
 drivers/clk/tegra/clk-divider.c                 |  5 +++--
 drivers/clk/tegra/clk-periph.c                  |  5 +++--
 drivers/clk/tegra/clk-pll.c                     | 13 +++++++------
 drivers/clk/tegra/clk-super.c                   |  4 ++--
 drivers/clk/ti/clk-dra7-atl.c                   |  4 ++--
 drivers/clk/ti/composite.c                      |  5 +++--
 drivers/clk/ti/divider.c                        |  5 +++--
 drivers/clk/ti/fapll.c                          |  9 +++++----
 drivers/clk/ux500/clk-prcmu.c                   |  4 ++--
 drivers/clk/versatile/clk-icst.c                |  4 ++--
 drivers/clk/versatile/clk-vexpress-osc.c        |  5 +++--
 drivers/clk/zte/clk.c                           | 13 +++++++------
 drivers/clk/zynq/pll.c                          |  4 ++--
 drivers/gpu/drm/imx/imx-tve.c                   |  5 +++--
 drivers/gpu/drm/mediatek/mtk_mipi_tx.c          |  5 +++--
 drivers/gpu/drm/mediatek/mtk_mt8173_hdmi_phy.c  |  5 +++--
 drivers/gpu/drm/msm/dsi/pll/dsi_pll.c           |  5 +++--
 drivers/gpu/drm/msm/dsi/pll/dsi_pll.h           |  5 +++--
 drivers/gpu/drm/msm/dsi/pll/dsi_pll_14nm.c      |  6 +++---
 drivers/gpu/drm/msm/dsi/pll/dsi_pll_28nm_8960.c |  5 +++--
 drivers/gpu/drm/msm/hdmi/hdmi_phy_8996.c        |  6 +++---
 drivers/gpu/drm/msm/hdmi/hdmi_pll_8960.c        |  4 ++--
 drivers/gpu/drm/msm/mdp/mdp4/mdp4_lvds_pll.c    |  5 +++--
 drivers/gpu/drm/pl111/pl111_display.c           |  5 +++--
 drivers/gpu/drm/sun4i/sun4i_dotclock.c          |  5 +++--
 drivers/media/platform/omap3isp/isp.c           |  4 ++--
 drivers/rtc/rtc-ac100.c                         |  5 +++--
 drivers/rtc/rtc-ds1307.c                        |  5 +++--
 drivers/rtc/rtc-hym8563.c                       |  5 +++--
 drivers/rtc/rtc-m41t80.c                        |  5 +++--
 drivers/rtc/rtc-pcf8563.c                       |  5 +++--
 include/linux/clk-provider.h                    |  4 ++--
 126 files changed, 417 insertions(+), 330 deletions(-)

diff --git a/arch/arm/mach-omap2/clkt2xxx_virt_prcm_set.c b/arch/arm/mach-omap2/clkt2xxx_virt_prcm_set.c
index b64d717..e024600 100644
--- a/arch/arm/mach-omap2/clkt2xxx_virt_prcm_set.c
+++ b/arch/arm/mach-omap2/clkt2xxx_virt_prcm_set.c
@@ -71,8 +71,8 @@ unsigned long omap2_table_mpu_recalc(struct clk_hw *clk,
  * Some might argue L3-DDR, others ARM, others IVA. This code is simple and
  * just uses the ARM rates.
  */
-long omap2_round_to_table_rate(struct clk_hw *hw, unsigned long rate,
-			       unsigned long *parent_rate)
+unsigned long omap2_round_to_table_rate(struct clk_hw *hw, unsigned long rate,
+					unsigned long *parent_rate)
 {
 	const struct prcm_config *ptr;
 	long highest_rate;
diff --git a/arch/arm/mach-omap2/clock2xxx.h b/arch/arm/mach-omap2/clock2xxx.h
index a8408f9..a9b73bd 100644
--- a/arch/arm/mach-omap2/clock2xxx.h
+++ b/arch/arm/mach-omap2/clock2xxx.h
@@ -16,8 +16,8 @@ unsigned long omap2_table_mpu_recalc(struct clk_hw *clk,
 				     unsigned long parent_rate);
 int omap2_select_table_rate(struct clk_hw *hw, unsigned long rate,
 			    unsigned long parent_rate);
-long omap2_round_to_table_rate(struct clk_hw *hw, unsigned long rate,
-			       unsigned long *parent_rate);
+unsigned long omap2_round_to_table_rate(struct clk_hw *hw, unsigned long rate,
+					unsigned long *parent_rate);
 unsigned long omap2xxx_sys_clk_recalc(struct clk_hw *clk,
 				      unsigned long parent_rate);
 unsigned long omap2_osc_clk_recalc(struct clk_hw *clk,
diff --git a/arch/arm/mach-vexpress/spc.c b/arch/arm/mach-vexpress/spc.c
index 21c0642..2d9a5a6 100644
--- a/arch/arm/mach-vexpress/spc.c
+++ b/arch/arm/mach-vexpress/spc.c
@@ -505,8 +505,8 @@ static unsigned long spc_recalc_rate(struct clk_hw *hw,
 	return freq * 1000;
 }
 
-static long spc_round_rate(struct clk_hw *hw, unsigned long drate,
-		unsigned long *parent_rate)
+static unsigned long spc_round_rate(struct clk_hw *hw, unsigned long drate,
+				    unsigned long *parent_rate)
 {
 	struct clk_spc *spc = to_clk_spc(hw);
 
diff --git a/arch/mips/alchemy/common/clock.c b/arch/mips/alchemy/common/clock.c
index 6b6f685..8281e7d 100644
--- a/arch/mips/alchemy/common/clock.c
+++ b/arch/mips/alchemy/common/clock.c
@@ -204,7 +204,7 @@ static int alchemy_clk_aux_setr(struct clk_hw *hw,
 	return 0;
 }
 
-static long alchemy_clk_aux_roundr(struct clk_hw *hw,
+static unsigned long alchemy_clk_aux_roundr(struct clk_hw *hw,
 					    unsigned long rate,
 					    unsigned long *parent_rate)
 {
diff --git a/drivers/clk/at91/clk-audio-pll.c b/drivers/clk/at91/clk-audio-pll.c
index da7bafc..56227cb 100644
--- a/drivers/clk/at91/clk-audio-pll.c
+++ b/drivers/clk/at91/clk-audio-pll.c
@@ -273,8 +273,9 @@ static int clk_audio_pll_frac_determine_rate(struct clk_hw *hw,
 	return 0;
 }
 
-static long clk_audio_pll_pad_round_rate(struct clk_hw *hw, unsigned long rate,
-					 unsigned long *parent_rate)
+static unsigned long clk_audio_pll_pad_round_rate(struct clk_hw *hw,
+						  unsigned long rate,
+						  unsigned long *parent_rate)
 {
 	struct clk_hw *pclk = clk_hw_get_parent(hw);
 	long best_rate = -EINVAL;
@@ -324,8 +325,9 @@ static long clk_audio_pll_pad_round_rate(struct clk_hw *hw, unsigned long rate,
 	return best_rate;
 }
 
-static long clk_audio_pll_pmc_round_rate(struct clk_hw *hw, unsigned long rate,
-					 unsigned long *parent_rate)
+static unsigned long clk_audio_pll_pmc_round_rate(struct clk_hw *hw,
+						  unsigned long rate,
+						  unsigned long *parent_rate)
 {
 	struct clk_hw *pclk = clk_hw_get_parent(hw);
 	long best_rate = -EINVAL;
diff --git a/drivers/clk/at91/clk-h32mx.c b/drivers/clk/at91/clk-h32mx.c
index e0daa4a..e74b551 100644
--- a/drivers/clk/at91/clk-h32mx.c
+++ b/drivers/clk/at91/clk-h32mx.c
@@ -45,8 +45,9 @@ static unsigned long clk_sama5d4_h32mx_recalc_rate(struct clk_hw *hw,
 	return parent_rate;
 }
 
-static long clk_sama5d4_h32mx_round_rate(struct clk_hw *hw, unsigned long rate,
-				       unsigned long *parent_rate)
+static unsigned long clk_sama5d4_h32mx_round_rate(struct clk_hw *hw,
+						  unsigned long rate,
+						  unsigned long *parent_rate)
 {
 	unsigned long div;
 
diff --git a/drivers/clk/at91/clk-peripheral.c b/drivers/clk/at91/clk-peripheral.c
index 7701183..c7b45f9 100644
--- a/drivers/clk/at91/clk-peripheral.c
+++ b/drivers/clk/at91/clk-peripheral.c
@@ -249,9 +249,9 @@ clk_sam9x5_peripheral_recalc_rate(struct clk_hw *hw,
 	return parent_rate >> periph->div;
 }
 
-static long clk_sam9x5_peripheral_round_rate(struct clk_hw *hw,
-					     unsigned long rate,
-					     unsigned long *parent_rate)
+static unsigned long clk_sam9x5_peripheral_round_rate(struct clk_hw *hw,
+						      unsigned long rate,
+						      unsigned long *parent_rate)
 {
 	int shift = 0;
 	unsigned long best_rate;
diff --git a/drivers/clk/at91/clk-pll.c b/drivers/clk/at91/clk-pll.c
index 7d3223f..4e7da3e 100644
--- a/drivers/clk/at91/clk-pll.c
+++ b/drivers/clk/at91/clk-pll.c
@@ -257,7 +257,7 @@ static long clk_pll_get_best_div_mul(struct clk_pll *pll, unsigned long rate,
 	return bestrate;
 }
 
-static long clk_pll_round_rate(struct clk_hw *hw, unsigned long rate,
+static unsigned long clk_pll_round_rate(struct clk_hw *hw, unsigned long rate,
 					unsigned long *parent_rate)
 {
 	struct clk_pll *pll = to_clk_pll(hw);
diff --git a/drivers/clk/at91/clk-plldiv.c b/drivers/clk/at91/clk-plldiv.c
index b4afaf2..25ccfc6 100644
--- a/drivers/clk/at91/clk-plldiv.c
+++ b/drivers/clk/at91/clk-plldiv.c
@@ -38,8 +38,9 @@ static unsigned long clk_plldiv_recalc_rate(struct clk_hw *hw,
 	return parent_rate;
 }
 
-static long clk_plldiv_round_rate(struct clk_hw *hw, unsigned long rate,
-					unsigned long *parent_rate)
+static unsigned long clk_plldiv_round_rate(struct clk_hw *hw,
+					   unsigned long rate,
+					   unsigned long *parent_rate)
 {
 	unsigned long div;
 
diff --git a/drivers/clk/at91/clk-smd.c b/drivers/clk/at91/clk-smd.c
index 965c662..d096a37 100644
--- a/drivers/clk/at91/clk-smd.c
+++ b/drivers/clk/at91/clk-smd.c
@@ -43,8 +43,9 @@ static unsigned long at91sam9x5_clk_smd_recalc_rate(struct clk_hw *hw,
 	return parent_rate / (smddiv + 1);
 }
 
-static long at91sam9x5_clk_smd_round_rate(struct clk_hw *hw, unsigned long rate,
-					  unsigned long *parent_rate)
+static unsigned long at91sam9x5_clk_smd_round_rate(struct clk_hw *hw,
+						   unsigned long rate,
+						   unsigned long *parent_rate)
 {
 	unsigned long div;
 	unsigned long bestrate;
diff --git a/drivers/clk/at91/clk-usb.c b/drivers/clk/at91/clk-usb.c
index 791770a..e737d6e 100644
--- a/drivers/clk/at91/clk-usb.c
+++ b/drivers/clk/at91/clk-usb.c
@@ -273,8 +273,9 @@ static unsigned long at91rm9200_clk_usb_recalc_rate(struct clk_hw *hw,
 	return 0;
 }
 
-static long at91rm9200_clk_usb_round_rate(struct clk_hw *hw, unsigned long rate,
-					  unsigned long *parent_rate)
+static unsigned long at91rm9200_clk_usb_round_rate(struct clk_hw *hw,
+						   unsigned long rate,
+						   unsigned long *parent_rate)
 {
 	struct at91rm9200_clk_usb *usb = to_at91rm9200_clk_usb(hw);
 	struct clk_hw *parent = clk_hw_get_parent(hw);
diff --git a/drivers/clk/axs10x/i2s_pll_clock.c b/drivers/clk/axs10x/i2s_pll_clock.c
index 02d3bcd..061260c 100644
--- a/drivers/clk/axs10x/i2s_pll_clock.c
+++ b/drivers/clk/axs10x/i2s_pll_clock.c
@@ -110,8 +110,8 @@ static unsigned long i2s_pll_recalc_rate(struct clk_hw *hw,
 	return ((parent_rate / idiv) * fbdiv) / odiv;
 }
 
-static long i2s_pll_round_rate(struct clk_hw *hw, unsigned long rate,
-			unsigned long *prate)
+static unsigned long i2s_pll_round_rate(struct clk_hw *hw, unsigned long rate,
+					unsigned long *prate)
 {
 	struct i2s_pll_clk *clk = to_i2s_pll_clk(hw);
 	const struct i2s_pll_cfg *pll_cfg = i2s_pll_get_cfg(*prate);
diff --git a/drivers/clk/axs10x/pll_clock.c b/drivers/clk/axs10x/pll_clock.c
index 25d8c24..27498eb 100644
--- a/drivers/clk/axs10x/pll_clock.c
+++ b/drivers/clk/axs10x/pll_clock.c
@@ -152,8 +152,9 @@ static unsigned long axs10x_pll_recalc_rate(struct clk_hw *hw,
 	return rate;
 }
 
-static long axs10x_pll_round_rate(struct clk_hw *hw, unsigned long rate,
-				  unsigned long *prate)
+static unsigned long axs10x_pll_round_rate(struct clk_hw *hw,
+					   unsigned long rate,
+					   unsigned long *prate)
 {
 	int i;
 	long best_rate;
diff --git a/drivers/clk/bcm/clk-bcm2835.c b/drivers/clk/bcm/clk-bcm2835.c
index 44301a3..c215dc9 100644
--- a/drivers/clk/bcm/clk-bcm2835.c
+++ b/drivers/clk/bcm/clk-bcm2835.c
@@ -554,8 +554,9 @@ static long bcm2835_pll_rate_from_divisors(unsigned long parent_rate,
 	return rate >> A2W_PLL_FRAC_BITS;
 }
 
-static long bcm2835_pll_round_rate(struct clk_hw *hw, unsigned long rate,
-				   unsigned long *parent_rate)
+static unsigned long bcm2835_pll_round_rate(struct clk_hw *hw,
+					    unsigned long rate,
+					    unsigned long *parent_rate)
 {
 	struct bcm2835_pll *pll = container_of(hw, struct bcm2835_pll, hw);
 	const struct bcm2835_pll_data *data = pll->data;
@@ -785,9 +786,9 @@ static int bcm2835_pll_divider_is_on(struct clk_hw *hw)
 	return !(cprman_read(cprman, data->a2w_reg) & A2W_PLL_CHANNEL_DISABLE);
 }
 
-static long bcm2835_pll_divider_round_rate(struct clk_hw *hw,
-					   unsigned long rate,
-					   unsigned long *parent_rate)
+static unsigned long bcm2835_pll_divider_round_rate(struct clk_hw *hw,
+						    unsigned long rate,
+						    unsigned long *parent_rate)
 {
 	return clk_divider_ops.round_rate(hw, rate, parent_rate);
 }
diff --git a/drivers/clk/bcm/clk-iproc-asiu.c b/drivers/clk/bcm/clk-iproc-asiu.c
index 4360e48..ae40d08 100644
--- a/drivers/clk/bcm/clk-iproc-asiu.c
+++ b/drivers/clk/bcm/clk-iproc-asiu.c
@@ -108,8 +108,9 @@ static unsigned long iproc_asiu_clk_recalc_rate(struct clk_hw *hw,
 	return clk->rate;
 }
 
-static long iproc_asiu_clk_round_rate(struct clk_hw *hw, unsigned long rate,
-				      unsigned long *parent_rate)
+static unsigned long iproc_asiu_clk_round_rate(struct clk_hw *hw,
+					       unsigned long rate,
+					       unsigned long *parent_rate)
 {
 	unsigned int div;
 
diff --git a/drivers/clk/bcm/clk-iproc-pll.c b/drivers/clk/bcm/clk-iproc-pll.c
index 375d8dd..b5399b2 100644
--- a/drivers/clk/bcm/clk-iproc-pll.c
+++ b/drivers/clk/bcm/clk-iproc-pll.c
@@ -431,8 +431,8 @@ static unsigned long iproc_pll_recalc_rate(struct clk_hw *hw,
 	return clk->rate;
 }
 
-static long iproc_pll_round_rate(struct clk_hw *hw, unsigned long rate,
-				 unsigned long *parent_rate)
+static unsigned long iproc_pll_round_rate(struct clk_hw *hw, unsigned long rate,
+					  unsigned long *parent_rate)
 {
 	unsigned i;
 	struct iproc_clk *clk = to_iproc_clk(hw);
@@ -535,8 +535,8 @@ static unsigned long iproc_clk_recalc_rate(struct clk_hw *hw,
 	return clk->rate;
 }
 
-static long iproc_clk_round_rate(struct clk_hw *hw, unsigned long rate,
-		unsigned long *parent_rate)
+static unsigned long iproc_clk_round_rate(struct clk_hw *hw, unsigned long rate,
+					  unsigned long *parent_rate)
 {
 	unsigned int div;
 
diff --git a/drivers/clk/clk-axi-clkgen.c b/drivers/clk/clk-axi-clkgen.c
index 5e918e7..1da2ba4 100644
--- a/drivers/clk/clk-axi-clkgen.c
+++ b/drivers/clk/clk-axi-clkgen.c
@@ -294,8 +294,9 @@ static int axi_clkgen_set_rate(struct clk_hw *clk_hw,
 	return 0;
 }
 
-static long axi_clkgen_round_rate(struct clk_hw *hw, unsigned long rate,
-	unsigned long *parent_rate)
+static unsigned long axi_clkgen_round_rate(struct clk_hw *hw,
+					   unsigned long rate,
+					   unsigned long *parent_rate)
 {
 	unsigned int d, m, dout;
 
diff --git a/drivers/clk/clk-cdce706.c b/drivers/clk/clk-cdce706.c
index f21d909..998ad47 100644
--- a/drivers/clk/clk-cdce706.c
+++ b/drivers/clk/clk-cdce706.c
@@ -185,8 +185,9 @@ static unsigned long cdce706_pll_recalc_rate(struct clk_hw *hw,
 	return 0;
 }
 
-static long cdce706_pll_round_rate(struct clk_hw *hw, unsigned long rate,
-				   unsigned long *parent_rate)
+static unsigned long cdce706_pll_round_rate(struct clk_hw *hw,
+					    unsigned long rate,
+					    unsigned long *parent_rate)
 {
 	struct cdce706_hw_data *hwd = to_hw_data(hw);
 	unsigned long mul, div;
@@ -290,8 +291,9 @@ static unsigned long cdce706_divider_recalc_rate(struct clk_hw *hw,
 	return 0;
 }
 
-static long cdce706_divider_round_rate(struct clk_hw *hw, unsigned long rate,
-				       unsigned long *parent_rate)
+static unsigned long cdce706_divider_round_rate(struct clk_hw *hw,
+						unsigned long rate,
+						unsigned long *parent_rate)
 {
 	struct cdce706_hw_data *hwd = to_hw_data(hw);
 	struct cdce706_dev_data *cdce = hwd->dev_data;
@@ -423,8 +425,9 @@ static unsigned long cdce706_clkout_recalc_rate(struct clk_hw *hw,
 	return parent_rate;
 }
 
-static long cdce706_clkout_round_rate(struct clk_hw *hw, unsigned long rate,
-				      unsigned long *parent_rate)
+static unsigned long cdce706_clkout_round_rate(struct clk_hw *hw,
+					       unsigned long rate,
+					       unsigned long *parent_rate)
 {
 	*parent_rate = rate;
 	return rate;
diff --git a/drivers/clk/clk-cdce925.c b/drivers/clk/clk-cdce925.c
index 0a7e7d5..341e744 100644
--- a/drivers/clk/clk-cdce925.c
+++ b/drivers/clk/clk-cdce925.c
@@ -142,8 +142,9 @@ static void cdce925_pll_find_rate(unsigned long rate,
 	}
 }
 
-static long cdce925_pll_round_rate(struct clk_hw *hw, unsigned long rate,
-		unsigned long *parent_rate)
+static unsigned long cdce925_pll_round_rate(struct clk_hw *hw,
+					    unsigned long rate,
+					    unsigned long *parent_rate)
 {
 	u16 n, m;
 
@@ -434,8 +435,9 @@ static unsigned long cdce925_clk_best_parent_rate(
 	return rate * pdiv_best;
 }
 
-static long cdce925_clk_round_rate(struct clk_hw *hw, unsigned long rate,
-		unsigned long *parent_rate)
+static unsigned long cdce925_clk_round_rate(struct clk_hw *hw,
+					    unsigned long rate,
+					    unsigned long *parent_rate)
 {
 	unsigned long l_parent_rate = *parent_rate;
 	u16 divider = cdce925_calc_divider(rate, l_parent_rate);
@@ -487,8 +489,9 @@ static u16 cdce925_y1_calc_divider(unsigned long rate,
 	return (u16)divider;
 }
 
-static long cdce925_clk_y1_round_rate(struct clk_hw *hw, unsigned long rate,
-		unsigned long *parent_rate)
+static unsigned long cdce925_clk_y1_round_rate(struct clk_hw *hw,
+					       unsigned long rate,
+					       unsigned long *parent_rate)
 {
 	unsigned long l_parent_rate = *parent_rate;
 	u16 divider = cdce925_y1_calc_divider(rate, l_parent_rate);
diff --git a/drivers/clk/clk-composite.c b/drivers/clk/clk-composite.c
index 00269de..f3707c3 100644
--- a/drivers/clk/clk-composite.c
+++ b/drivers/clk/clk-composite.c
@@ -127,8 +127,9 @@ static int clk_composite_determine_rate(struct clk_hw *hw,
 	}
 }
 
-static long clk_composite_round_rate(struct clk_hw *hw, unsigned long rate,
-				  unsigned long *prate)
+static unsigned long clk_composite_round_rate(struct clk_hw *hw,
+					      unsigned long rate,
+					      unsigned long *prate)
 {
 	struct clk_composite *composite = to_clk_composite(hw);
 	const struct clk_ops *rate_ops = composite->rate_ops;
diff --git a/drivers/clk/clk-cs2000-cp.c b/drivers/clk/clk-cs2000-cp.c
index e8ea81c..d64178b 100644
--- a/drivers/clk/clk-cs2000-cp.c
+++ b/drivers/clk/clk-cs2000-cp.c
@@ -300,8 +300,8 @@ static unsigned long cs2000_recalc_rate(struct clk_hw *hw,
 	return cs2000_ratio_to_rate(ratio, parent_rate);
 }
 
-static long cs2000_round_rate(struct clk_hw *hw, unsigned long rate,
-			      unsigned long *parent_rate)
+static unsigned long cs2000_round_rate(struct clk_hw *hw, unsigned long rate,
+				       unsigned long *parent_rate)
 {
 	u32 ratio;
 
diff --git a/drivers/clk/clk-divider.c b/drivers/clk/clk-divider.c
index 4ed516c..a26ec7c 100644
--- a/drivers/clk/clk-divider.c
+++ b/drivers/clk/clk-divider.c
@@ -345,8 +345,9 @@ long divider_round_rate_parent(struct clk_hw *hw, struct clk_hw *parent,
 }
 EXPORT_SYMBOL_GPL(divider_round_rate_parent);
 
-static long clk_divider_round_rate(struct clk_hw *hw, unsigned long rate,
-				unsigned long *prate)
+static unsigned long clk_divider_round_rate(struct clk_hw *hw,
+					    unsigned long rate,
+					    unsigned long *prate)
 {
 	struct clk_divider *divider = to_clk_divider(hw);
 	int bestdiv;
diff --git a/drivers/clk/clk-fixed-factor.c b/drivers/clk/clk-fixed-factor.c
index a5d402d..40d32af 100644
--- a/drivers/clk/clk-fixed-factor.c
+++ b/drivers/clk/clk-fixed-factor.c
@@ -35,8 +35,9 @@ static unsigned long clk_factor_recalc_rate(struct clk_hw *hw,
 	return (unsigned long)rate;
 }
 
-static long clk_factor_round_rate(struct clk_hw *hw, unsigned long rate,
-				unsigned long *prate)
+static unsigned long clk_factor_round_rate(struct clk_hw *hw,
+					   unsigned long rate,
+					   unsigned long *prate)
 {
 	struct clk_fixed_factor *fix = to_clk_fixed_factor(hw);
 
diff --git a/drivers/clk/clk-fractional-divider.c b/drivers/clk/clk-fractional-divider.c
index fdf625f..b7eb6a9 100644
--- a/drivers/clk/clk-fractional-divider.c
+++ b/drivers/clk/clk-fractional-divider.c
@@ -70,8 +70,8 @@ static void clk_fd_general_approximation(struct clk_hw *hw, unsigned long rate,
 			m, n);
 }
 
-static long clk_fd_round_rate(struct clk_hw *hw, unsigned long rate,
-			      unsigned long *parent_rate)
+static unsigned long clk_fd_round_rate(struct clk_hw *hw, unsigned long rate,
+				       unsigned long *parent_rate)
 {
 	struct clk_fractional_divider *fd = to_clk_fd(hw);
 	unsigned long m, n;
diff --git a/drivers/clk/clk-gemini.c b/drivers/clk/clk-gemini.c
index 5e66e6c..f385fc2 100644
--- a/drivers/clk/clk-gemini.c
+++ b/drivers/clk/clk-gemini.c
@@ -128,8 +128,9 @@ static unsigned long gemini_pci_recalc_rate(struct clk_hw *hw,
 	return 33000000;
 }
 
-static long gemini_pci_round_rate(struct clk_hw *hw, unsigned long rate,
-				  unsigned long *prate)
+static unsigned long gemini_pci_round_rate(struct clk_hw *hw,
+					   unsigned long rate,
+					   unsigned long *prate)
 {
 	/* We support 33 and 66 MHz */
 	if (rate < 48000000)
diff --git a/drivers/clk/clk-highbank.c b/drivers/clk/clk-highbank.c
index 727ed8e..add1423 100644
--- a/drivers/clk/clk-highbank.c
+++ b/drivers/clk/clk-highbank.c
@@ -143,8 +143,9 @@ static void clk_pll_calc(unsigned long rate, unsigned long ref_freq,
 	*pdivf = divf;
 }
 
-static long clk_pll_round_rate(struct clk_hw *hwclk, unsigned long rate,
-			       unsigned long *parent_rate)
+static unsigned long clk_pll_round_rate(struct clk_hw *hwclk,
+					unsigned long rate,
+					unsigned long *parent_rate)
 {
 	u32 divq, divf;
 	unsigned long ref_freq = *parent_rate;
@@ -240,8 +241,9 @@ static unsigned long clk_periclk_recalc_rate(struct clk_hw *hwclk,
 	return parent_rate / div;
 }
 
-static long clk_periclk_round_rate(struct clk_hw *hwclk, unsigned long rate,
-				   unsigned long *parent_rate)
+static unsigned long clk_periclk_round_rate(struct clk_hw *hwclk,
+					    unsigned long rate,
+					    unsigned long *parent_rate)
 {
 	u32 div;
 
diff --git a/drivers/clk/clk-hsdk-pll.c b/drivers/clk/clk-hsdk-pll.c
index c4ee280..62c8e18 100644
--- a/drivers/clk/clk-hsdk-pll.c
+++ b/drivers/clk/clk-hsdk-pll.c
@@ -192,8 +192,8 @@ static unsigned long hsdk_pll_recalc_rate(struct clk_hw *hw,
 	return rate;
 }
 
-static long hsdk_pll_round_rate(struct clk_hw *hw, unsigned long rate,
-				unsigned long *prate)
+static unsigned long hsdk_pll_round_rate(struct clk_hw *hw, unsigned long rate,
+					 unsigned long *prate)
 {
 	int i;
 	unsigned long best_rate;
diff --git a/drivers/clk/clk-multiplier.c b/drivers/clk/clk-multiplier.c
index dc037c9..b022707 100644
--- a/drivers/clk/clk-multiplier.c
+++ b/drivers/clk/clk-multiplier.c
@@ -98,8 +98,9 @@ static unsigned long __bestmult(struct clk_hw *hw, unsigned long rate,
 	return bestmult;
 }
 
-static long clk_multiplier_round_rate(struct clk_hw *hw, unsigned long rate,
-				  unsigned long *parent_rate)
+static unsigned long clk_multiplier_round_rate(struct clk_hw *hw,
+					       unsigned long rate,
+					       unsigned long *parent_rate)
 {
 	struct clk_multiplier *mult = to_clk_multiplier(hw);
 	unsigned long factor = __bestmult(hw, rate, parent_rate,
diff --git a/drivers/clk/clk-scpi.c b/drivers/clk/clk-scpi.c
index 2585472..303dc5e 100644
--- a/drivers/clk/clk-scpi.c
+++ b/drivers/clk/clk-scpi.c
@@ -44,8 +44,8 @@ static unsigned long scpi_clk_recalc_rate(struct clk_hw *hw,
 	return clk->scpi_ops->clk_get_val(clk->id);
 }
 
-static long scpi_clk_round_rate(struct clk_hw *hw, unsigned long rate,
-				unsigned long *parent_rate)
+static unsigned long scpi_clk_round_rate(struct clk_hw *hw, unsigned long rate,
+					 unsigned long *parent_rate)
 {
 	/*
 	 * We can't figure out what rate it will be, so just return the
@@ -104,8 +104,8 @@ static unsigned long scpi_dvfs_recalc_rate(struct clk_hw *hw,
 	return opp->freq;
 }
 
-static long scpi_dvfs_round_rate(struct clk_hw *hw, unsigned long rate,
-				 unsigned long *parent_rate)
+static unsigned long scpi_dvfs_round_rate(struct clk_hw *hw, unsigned long rate,
+					  unsigned long *parent_rate)
 {
 	struct scpi_clk *clk = to_scpi_clk(hw);
 
diff --git a/drivers/clk/clk-si514.c b/drivers/clk/clk-si514.c
index 09b6718..8d940d0 100644
--- a/drivers/clk/clk-si514.c
+++ b/drivers/clk/clk-si514.c
@@ -209,8 +209,8 @@ static unsigned long si514_recalc_rate(struct clk_hw *hw,
 	return si514_calc_rate(&settings);
 }
 
-static long si514_round_rate(struct clk_hw *hw, unsigned long rate,
-		unsigned long *parent_rate)
+static unsigned long si514_round_rate(struct clk_hw *hw, unsigned long rate,
+				      unsigned long *parent_rate)
 {
 	struct clk_si514_muldiv settings;
 	int err;
diff --git a/drivers/clk/clk-si5351.c b/drivers/clk/clk-si5351.c
index 20d9076..4a35acd 100644
--- a/drivers/clk/clk-si5351.c
+++ b/drivers/clk/clk-si5351.c
@@ -446,8 +446,9 @@ static unsigned long si5351_pll_recalc_rate(struct clk_hw *hw,
 	return (unsigned long)rate;
 }
 
-static long si5351_pll_round_rate(struct clk_hw *hw, unsigned long rate,
-				  unsigned long *parent_rate)
+static unsigned long si5351_pll_round_rate(struct clk_hw *hw,
+					   unsigned long rate,
+					   unsigned long *parent_rate)
 {
 	struct si5351_hw_data *hwdata =
 		container_of(hw, struct si5351_hw_data, hw);
@@ -644,8 +645,9 @@ static unsigned long si5351_msynth_recalc_rate(struct clk_hw *hw,
 	return (unsigned long)rate;
 }
 
-static long si5351_msynth_round_rate(struct clk_hw *hw, unsigned long rate,
-				     unsigned long *parent_rate)
+static unsigned long si5351_msynth_round_rate(struct clk_hw *hw,
+					      unsigned long rate,
+					      unsigned long *parent_rate)
 {
 	struct si5351_hw_data *hwdata =
 		container_of(hw, struct si5351_hw_data, hw);
@@ -1000,8 +1002,9 @@ static unsigned long si5351_clkout_recalc_rate(struct clk_hw *hw,
 	return parent_rate >> rdiv;
 }
 
-static long si5351_clkout_round_rate(struct clk_hw *hw, unsigned long rate,
-				     unsigned long *parent_rate)
+static unsigned long si5351_clkout_round_rate(struct clk_hw *hw,
+					      unsigned long rate,
+					      unsigned long *parent_rate)
 {
 	struct si5351_hw_data *hwdata =
 		container_of(hw, struct si5351_hw_data, hw);
diff --git a/drivers/clk/clk-si570.c b/drivers/clk/clk-si570.c
index 646af1d..597e5d1 100644
--- a/drivers/clk/clk-si570.c
+++ b/drivers/clk/clk-si570.c
@@ -246,8 +246,8 @@ static unsigned long si570_recalc_rate(struct clk_hw *hw,
 	return rate;
 }
 
-static long si570_round_rate(struct clk_hw *hw, unsigned long rate,
-		unsigned long *parent_rate)
+static unsigned long si570_round_rate(struct clk_hw *hw, unsigned long rate,
+				      unsigned long *parent_rate)
 {
 	int err;
 	u64 rfreq;
diff --git a/drivers/clk/clk-stm32f4.c b/drivers/clk/clk-stm32f4.c
index 96c6b6b..19a7afa 100644
--- a/drivers/clk/clk-stm32f4.c
+++ b/drivers/clk/clk-stm32f4.c
@@ -354,8 +354,9 @@ static unsigned long clk_apb_mul_recalc_rate(struct clk_hw *hw,
 	return parent_rate;
 }
 
-static long clk_apb_mul_round_rate(struct clk_hw *hw, unsigned long rate,
-				   unsigned long *prate)
+static unsigned long clk_apb_mul_round_rate(struct clk_hw *hw,
+					    unsigned long rate,
+					    unsigned long *prate)
 {
 	struct clk_apb_mul *am = to_clk_apb_mul(hw);
 	unsigned long mult = 1;
@@ -570,8 +571,9 @@ static unsigned long stm32f4_pll_recalc(struct clk_hw *hw,
 	return parent_rate * n;
 }
 
-static long stm32f4_pll_round_rate(struct clk_hw *hw, unsigned long rate,
-		unsigned long *prate)
+static unsigned long stm32f4_pll_round_rate(struct clk_hw *hw,
+					    unsigned long rate,
+					    unsigned long *prate)
 {
 	struct clk_gate *gate = to_clk_gate(hw);
 	struct stm32f4_pll *pll = to_stm32f4_pll(gate);
@@ -636,8 +638,9 @@ static unsigned long stm32f4_pll_div_recalc_rate(struct clk_hw *hw,
 	return clk_divider_ops.recalc_rate(hw, parent_rate);
 }
 
-static long stm32f4_pll_div_round_rate(struct clk_hw *hw, unsigned long rate,
-				unsigned long *prate)
+static unsigned long stm32f4_pll_div_round_rate(struct clk_hw *hw,
+						unsigned long rate,
+						unsigned long *prate)
 {
 	return clk_divider_ops.round_rate(hw, rate, prate);
 }
diff --git a/drivers/clk/clk-u300.c b/drivers/clk/clk-u300.c
index 7b3e192..d988363 100644
--- a/drivers/clk/clk-u300.c
+++ b/drivers/clk/clk-u300.c
@@ -629,7 +629,7 @@ syscon_clk_recalc_rate(struct clk_hw *hw,
 	}
 }
 
-static long
+static unsigned long
 syscon_clk_round_rate(struct clk_hw *hw, unsigned long rate,
 		      unsigned long *prate)
 {
@@ -1039,7 +1039,7 @@ mclk_clk_recalc_rate(struct clk_hw *hw,
 	return parent_rate;
 }
 
-static long
+static unsigned long
 mclk_clk_round_rate(struct clk_hw *hw, unsigned long rate,
 		    unsigned long *prate)
 {
diff --git a/drivers/clk/clk-versaclock5.c b/drivers/clk/clk-versaclock5.c
index decffb3..2b8ea89 100644
--- a/drivers/clk/clk-versaclock5.c
+++ b/drivers/clk/clk-versaclock5.c
@@ -344,8 +344,8 @@ static unsigned long vc5_pfd_recalc_rate(struct clk_hw *hw,
 		return parent_rate / VC5_REF_DIVIDER_REF_DIV(div);
 }
 
-static long vc5_pfd_round_rate(struct clk_hw *hw, unsigned long rate,
-			       unsigned long *parent_rate)
+static unsigned long vc5_pfd_round_rate(struct clk_hw *hw, unsigned long rate,
+					unsigned long *parent_rate)
 {
 	unsigned long idiv;
 
@@ -422,8 +422,8 @@ static unsigned long vc5_pll_recalc_rate(struct clk_hw *hw,
 	return (parent_rate * div_int) + ((parent_rate * div_frc) >> 24);
 }
 
-static long vc5_pll_round_rate(struct clk_hw *hw, unsigned long rate,
-			       unsigned long *parent_rate)
+static unsigned long vc5_pll_round_rate(struct clk_hw *hw, unsigned long rate,
+					unsigned long *parent_rate)
 {
 	struct vc5_hw_data *hwdata = container_of(hw, struct vc5_hw_data, hw);
 	u32 div_int;
@@ -500,8 +500,8 @@ static unsigned long vc5_fod_recalc_rate(struct clk_hw *hw,
 	return div64_u64((u64)f_in << 24ULL, ((u64)div_int << 24ULL) + div_frc);
 }
 
-static long vc5_fod_round_rate(struct clk_hw *hw, unsigned long rate,
-			       unsigned long *parent_rate)
+static unsigned long vc5_fod_round_rate(struct clk_hw *hw, unsigned long rate,
+					unsigned long *parent_rate)
 {
 	struct vc5_hw_data *hwdata = container_of(hw, struct vc5_hw_data, hw);
 	/* VCO frequency is divided by two before entering FOD */
diff --git a/drivers/clk/clk-vt8500.c b/drivers/clk/clk-vt8500.c
index 4161a6f..43c88f6 100644
--- a/drivers/clk/clk-vt8500.c
+++ b/drivers/clk/clk-vt8500.c
@@ -137,8 +137,9 @@ static unsigned long vt8500_dclk_recalc_rate(struct clk_hw *hw,
 	return parent_rate / div;
 }
 
-static long vt8500_dclk_round_rate(struct clk_hw *hw, unsigned long rate,
-				unsigned long *prate)
+static unsigned long vt8500_dclk_round_rate(struct clk_hw *hw,
+					    unsigned long rate,
+					    unsigned long *prate)
 {
 	struct clk_device *cdev = to_clk_device(hw);
 	u32 divisor;
@@ -603,8 +604,8 @@ static int vtwm_pll_set_rate(struct clk_hw *hw, unsigned long rate,
 	return 0;
 }
 
-static long vtwm_pll_round_rate(struct clk_hw *hw, unsigned long rate,
-				unsigned long *prate)
+static unsigned long vtwm_pll_round_rate(struct clk_hw *hw, unsigned long rate,
+					 unsigned long *prate)
 {
 	struct clk_pll *pll = to_clk_pll(hw);
 	u32 filter, mul, div1, div2;
diff --git a/drivers/clk/clk-wm831x.c b/drivers/clk/clk-wm831x.c
index 1467695..be6f98b 100644
--- a/drivers/clk/clk-wm831x.c
+++ b/drivers/clk/clk-wm831x.c
@@ -138,8 +138,9 @@ static unsigned long wm831x_fll_recalc_rate(struct clk_hw *hw,
 	return 0;
 }
 
-static long wm831x_fll_round_rate(struct clk_hw *hw, unsigned long rate,
-				  unsigned long *unused)
+static unsigned long wm831x_fll_round_rate(struct clk_hw *hw,
+					   unsigned long rate,
+					   unsigned long *unused)
 {
 	int best = 0;
 	int i;
diff --git a/drivers/clk/clk-xgene.c b/drivers/clk/clk-xgene.c
index 531b030..7a93415 100644
--- a/drivers/clk/clk-xgene.c
+++ b/drivers/clk/clk-xgene.c
@@ -286,8 +286,9 @@ static unsigned long xgene_clk_pmd_recalc_rate(struct clk_hw *hw,
 	return ret;
 }
 
-static long xgene_clk_pmd_round_rate(struct clk_hw *hw, unsigned long rate,
-				     unsigned long *parent_rate)
+static unsigned long xgene_clk_pmd_round_rate(struct clk_hw *hw,
+					      unsigned long rate,
+					      unsigned long *parent_rate)
 {
 	struct xgene_clk_pmd *fd = to_xgene_clk_pmd(hw);
 	u64 ret, scale;
@@ -609,8 +610,8 @@ static int xgene_clk_set_rate(struct clk_hw *hw, unsigned long rate,
 	return parent_rate / divider_save;
 }
 
-static long xgene_clk_round_rate(struct clk_hw *hw, unsigned long rate,
-				unsigned long *prate)
+static unsigned long xgene_clk_round_rate(struct clk_hw *hw, unsigned long rate,
+					  unsigned long *prate)
 {
 	struct xgene_clk *pclk = to_xgene_clk(hw);
 	unsigned long parent_rate = *prate;
diff --git a/drivers/clk/h8300/clk-h8s2678.c b/drivers/clk/h8300/clk-h8s2678.c
index fc24b0b..e531612 100644
--- a/drivers/clk/h8300/clk-h8s2678.c
+++ b/drivers/clk/h8300/clk-h8s2678.c
@@ -33,8 +33,8 @@ static unsigned long pll_recalc_rate(struct clk_hw *hw,
 	return parent_rate * mul;
 }
 
-static long pll_round_rate(struct clk_hw *hw, unsigned long rate,
-				unsigned long *prate)
+static unsigned long pll_round_rate(struct clk_hw *hw, unsigned long rate,
+				    unsigned long *prate)
 {
 	int i, m = -1;
 	long offset[3];
diff --git a/drivers/clk/hisilicon/clk-hi6220-stub.c b/drivers/clk/hisilicon/clk-hi6220-stub.c
index 329a092..1a2d64d 100644
--- a/drivers/clk/hisilicon/clk-hi6220-stub.c
+++ b/drivers/clk/hisilicon/clk-hi6220-stub.c
@@ -165,8 +165,9 @@ static int hi6220_stub_clk_set_rate(struct clk_hw *hw, unsigned long rate,
 	return ret;
 }
 
-static long hi6220_stub_clk_round_rate(struct clk_hw *hw, unsigned long rate,
-		unsigned long *parent_rate)
+static unsigned long hi6220_stub_clk_round_rate(struct clk_hw *hw,
+						unsigned long rate,
+						unsigned long *parent_rate)
 {
 	struct hi6220_stub_clk *stub_clk = to_stub_clk(hw);
 	unsigned long new_rate = rate / 1000;  /* kHz */
diff --git a/drivers/clk/hisilicon/clkdivider-hi6220.c b/drivers/clk/hisilicon/clkdivider-hi6220.c
index a1c1f68..5d771e9 100644
--- a/drivers/clk/hisilicon/clkdivider-hi6220.c
+++ b/drivers/clk/hisilicon/clkdivider-hi6220.c
@@ -59,8 +59,9 @@ static unsigned long hi6220_clkdiv_recalc_rate(struct clk_hw *hw,
 				   CLK_DIVIDER_ROUND_CLOSEST);
 }
 
-static long hi6220_clkdiv_round_rate(struct clk_hw *hw, unsigned long rate,
-					unsigned long *prate)
+static unsigned long hi6220_clkdiv_round_rate(struct clk_hw *hw,
+					      unsigned long rate,
+					      unsigned long *prate)
 {
 	struct hi6220_clk_divider *dclk = to_hi6220_clk_divider(hw);
 
diff --git a/drivers/clk/imx/clk-busy.c b/drivers/clk/imx/clk-busy.c
index 6df3389..2ee1cd3 100644
--- a/drivers/clk/imx/clk-busy.c
+++ b/drivers/clk/imx/clk-busy.c
@@ -51,8 +51,9 @@ static unsigned long clk_busy_divider_recalc_rate(struct clk_hw *hw,
 	return busy->div_ops->recalc_rate(&busy->div.hw, parent_rate);
 }
 
-static long clk_busy_divider_round_rate(struct clk_hw *hw, unsigned long rate,
-					unsigned long *prate)
+static unsigned long clk_busy_divider_round_rate(struct clk_hw *hw,
+						 unsigned long rate,
+						 unsigned long *prate)
 {
 	struct clk_busy_divider *busy = to_clk_busy_divider(hw);
 
diff --git a/drivers/clk/imx/clk-cpu.c b/drivers/clk/imx/clk-cpu.c
index 9d46eac..02db30a 100644
--- a/drivers/clk/imx/clk-cpu.c
+++ b/drivers/clk/imx/clk-cpu.c
@@ -35,8 +35,8 @@ static unsigned long clk_cpu_recalc_rate(struct clk_hw *hw,
 	return clk_get_rate(cpu->div);
 }
 
-static long clk_cpu_round_rate(struct clk_hw *hw, unsigned long rate,
-			       unsigned long *prate)
+static unsigned long clk_cpu_round_rate(struct clk_hw *hw, unsigned long rate,
+					unsigned long *prate)
 {
 	struct clk_cpu *cpu = to_clk_cpu(hw);
 
diff --git a/drivers/clk/imx/clk-fixup-div.c b/drivers/clk/imx/clk-fixup-div.c
index ce572273..d6c98de 100644
--- a/drivers/clk/imx/clk-fixup-div.c
+++ b/drivers/clk/imx/clk-fixup-div.c
@@ -47,8 +47,9 @@ static unsigned long clk_fixup_div_recalc_rate(struct clk_hw *hw,
 	return fixup_div->ops->recalc_rate(&fixup_div->divider.hw, parent_rate);
 }
 
-static long clk_fixup_div_round_rate(struct clk_hw *hw, unsigned long rate,
-			       unsigned long *prate)
+static unsigned long clk_fixup_div_round_rate(struct clk_hw *hw,
+					      unsigned long rate,
+					      unsigned long *prate)
 {
 	struct clk_fixup_div *fixup_div = to_clk_fixup_div(hw);
 
diff --git a/drivers/clk/imx/clk-pfd.c b/drivers/clk/imx/clk-pfd.c
index 04a3e78..4898469 100644
--- a/drivers/clk/imx/clk-pfd.c
+++ b/drivers/clk/imx/clk-pfd.c
@@ -67,8 +67,8 @@ static unsigned long clk_pfd_recalc_rate(struct clk_hw *hw,
 	return tmp;
 }
 
-static long clk_pfd_round_rate(struct clk_hw *hw, unsigned long rate,
-			       unsigned long *prate)
+static unsigned long clk_pfd_round_rate(struct clk_hw *hw, unsigned long rate,
+					unsigned long *prate)
 {
 	u64 tmp = *prate;
 	u8 frac;
diff --git a/drivers/clk/imx/clk-pllv2.c b/drivers/clk/imx/clk-pllv2.c
index 85b5cbe..fe9c1fa 100644
--- a/drivers/clk/imx/clk-pllv2.c
+++ b/drivers/clk/imx/clk-pllv2.c
@@ -178,8 +178,8 @@ static int clk_pllv2_set_rate(struct clk_hw *hw, unsigned long rate,
 	return 0;
 }
 
-static long clk_pllv2_round_rate(struct clk_hw *hw, unsigned long rate,
-		unsigned long *prate)
+static unsigned long clk_pllv2_round_rate(struct clk_hw *hw, unsigned long rate,
+					  unsigned long *prate)
 {
 	u32 dp_op, dp_mfd, dp_mfn;
 
diff --git a/drivers/clk/imx/clk-pllv3.c b/drivers/clk/imx/clk-pllv3.c
index 9af62ee..b2d8dc5 100644
--- a/drivers/clk/imx/clk-pllv3.c
+++ b/drivers/clk/imx/clk-pllv3.c
@@ -121,8 +121,8 @@ static unsigned long clk_pllv3_recalc_rate(struct clk_hw *hw,
 	return (div == 1) ? parent_rate * 22 : parent_rate * 20;
 }
 
-static long clk_pllv3_round_rate(struct clk_hw *hw, unsigned long rate,
-				 unsigned long *prate)
+static unsigned long clk_pllv3_round_rate(struct clk_hw *hw, unsigned long rate,
+					  unsigned long *prate)
 {
 	unsigned long parent_rate = *prate;
 
@@ -169,8 +169,9 @@ static unsigned long clk_pllv3_sys_recalc_rate(struct clk_hw *hw,
 	return parent_rate * div / 2;
 }
 
-static long clk_pllv3_sys_round_rate(struct clk_hw *hw, unsigned long rate,
-				     unsigned long *prate)
+static unsigned long clk_pllv3_sys_round_rate(struct clk_hw *hw,
+					      unsigned long rate,
+					      unsigned long *prate)
 {
 	unsigned long parent_rate = *prate;
 	unsigned long min_rate = parent_rate * 54 / 2;
@@ -230,8 +231,9 @@ static unsigned long clk_pllv3_av_recalc_rate(struct clk_hw *hw,
 	return parent_rate * div + (unsigned long)temp64;
 }
 
-static long clk_pllv3_av_round_rate(struct clk_hw *hw, unsigned long rate,
-				    unsigned long *prate)
+static unsigned long clk_pllv3_av_round_rate(struct clk_hw *hw,
+					     unsigned long rate,
+					     unsigned long *prate)
 {
 	unsigned long parent_rate = *prate;
 	unsigned long min_rate = parent_rate * 27;
@@ -359,8 +361,9 @@ static unsigned long clk_pllv3_vf610_recalc_rate(struct clk_hw *hw,
 	return clk_pllv3_vf610_mf_to_rate(parent_rate, mf);
 }
 
-static long clk_pllv3_vf610_round_rate(struct clk_hw *hw, unsigned long rate,
-				    unsigned long *prate)
+static unsigned long clk_pllv3_vf610_round_rate(struct clk_hw *hw,
+						unsigned long rate,
+						unsigned long *prate)
 {
 	struct clk_pllv3_vf610_mf mf = clk_pllv3_vf610_rate_to_mf(*prate, rate);
 
diff --git a/drivers/clk/ingenic/cgu.c b/drivers/clk/ingenic/cgu.c
index ab39363..3dee806 100644
--- a/drivers/clk/ingenic/cgu.c
+++ b/drivers/clk/ingenic/cgu.c
@@ -152,7 +152,7 @@ ingenic_pll_calc(const struct ingenic_cgu_clk_info *clk_info,
 	return div_u64((u64)parent_rate * m, n * od);
 }
 
-static long
+static unsigned long
 ingenic_pll_round_rate(struct clk_hw *hw, unsigned long req_rate,
 		       unsigned long *prate)
 {
@@ -357,7 +357,7 @@ ingenic_clk_calc_div(const struct ingenic_cgu_clk_info *clk_info,
 	return div;
 }
 
-static long
+static unsigned long
 ingenic_clk_round_rate(struct clk_hw *hw, unsigned long req_rate,
 		       unsigned long *parent_rate)
 {
diff --git a/drivers/clk/ingenic/jz4780-cgu.c b/drivers/clk/ingenic/jz4780-cgu.c
index ac3585e..1f23173 100644
--- a/drivers/clk/ingenic/jz4780-cgu.c
+++ b/drivers/clk/ingenic/jz4780-cgu.c
@@ -150,8 +150,9 @@ static unsigned long jz4780_otg_phy_recalc_rate(struct clk_hw *hw,
 	return parent_rate;
 }
 
-static long jz4780_otg_phy_round_rate(struct clk_hw *hw, unsigned long req_rate,
-				      unsigned long *parent_rate)
+static unsigned long jz4780_otg_phy_round_rate(struct clk_hw *hw,
+					       unsigned long req_rate,
+					       unsigned long *parent_rate)
 {
 	if (req_rate < 15600000)
 		return 12000000;
diff --git a/drivers/clk/mediatek/clk-pll.c b/drivers/clk/mediatek/clk-pll.c
index f54e401..a068e55 100644
--- a/drivers/clk/mediatek/clk-pll.c
+++ b/drivers/clk/mediatek/clk-pll.c
@@ -199,8 +199,8 @@ static unsigned long mtk_pll_recalc_rate(struct clk_hw *hw,
 	return __mtk_pll_recalc_rate(pll, parent_rate, pcw, postdiv);
 }
 
-static long mtk_pll_round_rate(struct clk_hw *hw, unsigned long rate,
-		unsigned long *prate)
+static unsigned long mtk_pll_round_rate(struct clk_hw *hw, unsigned long rate,
+					unsigned long *prate)
 {
 	struct mtk_clk_pll *pll = to_mtk_clk_pll(hw);
 	u32 pcw = 0;
diff --git a/drivers/clk/meson/clk-audio-divider.c b/drivers/clk/meson/clk-audio-divider.c
index 6c07db0..396a938 100644
--- a/drivers/clk/meson/clk-audio-divider.c
+++ b/drivers/clk/meson/clk-audio-divider.c
@@ -73,9 +73,9 @@ static unsigned long audio_divider_recalc_rate(struct clk_hw *hw,
 	return DIV_ROUND_UP_ULL((u64)parent_rate, divider);
 }
 
-static long audio_divider_round_rate(struct clk_hw *hw,
-				     unsigned long rate,
-				     unsigned long *parent_rate)
+static unsigned long audio_divider_round_rate(struct clk_hw *hw,
+					      unsigned long rate,
+					      unsigned long *parent_rate)
 {
 	struct meson_clk_audio_divider *adiv =
 		to_meson_clk_audio_divider(hw);
diff --git a/drivers/clk/meson/clk-cpu.c b/drivers/clk/meson/clk-cpu.c
index f8b2b7e..83c36c6 100644
--- a/drivers/clk/meson/clk-cpu.c
+++ b/drivers/clk/meson/clk-cpu.c
@@ -54,8 +54,9 @@
 #define to_meson_clk_cpu_hw(_hw) container_of(_hw, struct meson_clk_cpu, hw)
 #define to_meson_clk_cpu_nb(_nb) container_of(_nb, struct meson_clk_cpu, clk_nb)
 
-static long meson_clk_cpu_round_rate(struct clk_hw *hw, unsigned long rate,
-				     unsigned long *prate)
+static unsigned long meson_clk_cpu_round_rate(struct clk_hw *hw,
+					      unsigned long rate,
+					      unsigned long *prate)
 {
 	struct meson_clk_cpu *clk_cpu = to_meson_clk_cpu_hw(hw);
 
diff --git a/drivers/clk/meson/clk-pll.c b/drivers/clk/meson/clk-pll.c
index 0134155..3d5b663 100644
--- a/drivers/clk/meson/clk-pll.c
+++ b/drivers/clk/meson/clk-pll.c
@@ -87,8 +87,9 @@ static unsigned long meson_clk_pll_recalc_rate(struct clk_hw *hw,
 	return rate_mhz * 1000000;
 }
 
-static long meson_clk_pll_round_rate(struct clk_hw *hw, unsigned long rate,
-				     unsigned long *parent_rate)
+static unsigned long meson_clk_pll_round_rate(struct clk_hw *hw,
+					      unsigned long rate,
+					      unsigned long *parent_rate)
 {
 	struct meson_clk_pll *pll = to_meson_clk_pll(hw);
 	const struct pll_rate_table *rate_table = pll->rate_table;
diff --git a/drivers/clk/meson/gxbb-aoclk-32k.c b/drivers/clk/meson/gxbb-aoclk-32k.c
index 491634d..0fd5b6c 100644
--- a/drivers/clk/meson/gxbb-aoclk-32k.c
+++ b/drivers/clk/meson/gxbb-aoclk-32k.c
@@ -120,8 +120,9 @@ static const struct cec_32k_freq_table *find_cec_32k_freq(unsigned long rate,
 	return NULL;
 }
 
-static long aoclk_cec_32k_round_rate(struct clk_hw *hw, unsigned long rate,
-				     unsigned long *prate)
+static unsigned long aoclk_cec_32k_round_rate(struct clk_hw *hw,
+					      unsigned long rate,
+					      unsigned long *prate)
 {
 	const struct cec_32k_freq_table *freq = find_cec_32k_freq(rate,
 								  *prate);
diff --git a/drivers/clk/microchip/clk-core.c b/drivers/clk/microchip/clk-core.c
index c3b3014..70665c8 100644
--- a/drivers/clk/microchip/clk-core.c
+++ b/drivers/clk/microchip/clk-core.c
@@ -162,8 +162,8 @@ static unsigned long pbclk_recalc_rate(struct clk_hw *hw,
 	return parent_rate / pbclk_read_pbdiv(pb);
 }
 
-static long pbclk_round_rate(struct clk_hw *hw, unsigned long rate,
-			     unsigned long *parent_rate)
+static unsigned long pbclk_round_rate(struct clk_hw *hw, unsigned long rate,
+				      unsigned long *parent_rate)
 {
 	return calc_best_divided_rate(rate, *parent_rate,
 				      PB_DIV_MAX, PB_DIV_MIN);
@@ -377,8 +377,8 @@ static unsigned long roclk_recalc_rate(struct clk_hw *hw,
 	return roclk_calc_rate(parent_rate, rodiv, rotrim);
 }
 
-static long roclk_round_rate(struct clk_hw *hw, unsigned long rate,
-			     unsigned long *parent_rate)
+static unsigned long roclk_round_rate(struct clk_hw *hw, unsigned long rate,
+				      unsigned long *parent_rate)
 {
 	u32 rotrim, rodiv;
 
@@ -670,8 +670,8 @@ static unsigned long spll_clk_recalc_rate(struct clk_hw *hw,
 	return rate64;
 }
 
-static long spll_clk_round_rate(struct clk_hw *hw, unsigned long rate,
-				unsigned long *parent_rate)
+static unsigned long spll_clk_round_rate(struct clk_hw *hw, unsigned long rate,
+					 unsigned long *parent_rate)
 {
 	struct pic32_sys_pll *pll = clkhw_to_spll(hw);
 
diff --git a/drivers/clk/mmp/clk-frac.c b/drivers/clk/mmp/clk-frac.c
index cb43d54..af18643 100644
--- a/drivers/clk/mmp/clk-frac.c
+++ b/drivers/clk/mmp/clk-frac.c
@@ -24,8 +24,9 @@
 
 #define to_clk_factor(hw) container_of(hw, struct mmp_clk_factor, hw)
 
-static long clk_factor_round_rate(struct clk_hw *hw, unsigned long drate,
-		unsigned long *prate)
+static unsigned long clk_factor_round_rate(struct clk_hw *hw,
+					   unsigned long drate,
+					   unsigned long *prate)
 {
 	struct mmp_clk_factor *factor = to_clk_factor(hw);
 	unsigned long rate = 0, prev_rate;
diff --git a/drivers/clk/mvebu/clk-corediv.c b/drivers/clk/mvebu/clk-corediv.c
index 8491979..fa47909 100644
--- a/drivers/clk/mvebu/clk-corediv.c
+++ b/drivers/clk/mvebu/clk-corediv.c
@@ -136,8 +136,9 @@ static unsigned long clk_corediv_recalc_rate(struct clk_hw *hwclk,
 	return parent_rate / div;
 }
 
-static long clk_corediv_round_rate(struct clk_hw *hwclk, unsigned long rate,
-			       unsigned long *parent_rate)
+static unsigned long clk_corediv_round_rate(struct clk_hw *hwclk,
+					    unsigned long rate,
+					    unsigned long *parent_rate)
 {
 	/* Valid ratio are 1:4, 1:5, 1:6 and 1:8 */
 	u32 div;
diff --git a/drivers/clk/mvebu/clk-cpu.c b/drivers/clk/mvebu/clk-cpu.c
index 072aa38..2d9e7ab 100644
--- a/drivers/clk/mvebu/clk-cpu.c
+++ b/drivers/clk/mvebu/clk-cpu.c
@@ -58,8 +58,9 @@ static unsigned long clk_cpu_recalc_rate(struct clk_hw *hwclk,
 	return parent_rate / div;
 }
 
-static long clk_cpu_round_rate(struct clk_hw *hwclk, unsigned long rate,
-			       unsigned long *parent_rate)
+static unsigned long clk_cpu_round_rate(struct clk_hw *hwclk,
+					unsigned long rate,
+					unsigned long *parent_rate)
 {
 	/* Valid ratio are 1:1, 1:2 and 1:3 */
 	u32 div;
diff --git a/drivers/clk/mvebu/dove-divider.c b/drivers/clk/mvebu/dove-divider.c
index 7e35c89..234ba0a 100644
--- a/drivers/clk/mvebu/dove-divider.c
+++ b/drivers/clk/mvebu/dove-divider.c
@@ -108,8 +108,8 @@ static unsigned long dove_recalc_rate(struct clk_hw *hw, unsigned long parent)
 	return rate;
 }
 
-static long dove_round_rate(struct clk_hw *hw, unsigned long rate,
-			    unsigned long *parent)
+static unsigned long dove_round_rate(struct clk_hw *hw, unsigned long rate,
+				     unsigned long *parent)
 {
 	struct dove_clk *dc = to_dove_clk(hw);
 	unsigned long parent_rate = *parent;
diff --git a/drivers/clk/mxs/clk-div.c b/drivers/clk/mxs/clk-div.c
index ccebd01..60a8cc8 100644
--- a/drivers/clk/mxs/clk-div.c
+++ b/drivers/clk/mxs/clk-div.c
@@ -46,8 +46,8 @@ static unsigned long clk_div_recalc_rate(struct clk_hw *hw,
 	return div->ops->recalc_rate(&div->divider.hw, parent_rate);
 }
 
-static long clk_div_round_rate(struct clk_hw *hw, unsigned long rate,
-			       unsigned long *prate)
+static unsigned long clk_div_round_rate(struct clk_hw *hw, unsigned long rate,
+					unsigned long *prate)
 {
 	struct clk_div *div = to_clk_div(hw);
 
diff --git a/drivers/clk/mxs/clk-frac.c b/drivers/clk/mxs/clk-frac.c
index 27b3372..f57281f 100644
--- a/drivers/clk/mxs/clk-frac.c
+++ b/drivers/clk/mxs/clk-frac.c
@@ -50,8 +50,8 @@ static unsigned long clk_frac_recalc_rate(struct clk_hw *hw,
 	return tmp_rate >> frac->width;
 }
 
-static long clk_frac_round_rate(struct clk_hw *hw, unsigned long rate,
-				unsigned long *prate)
+static unsigned long clk_frac_round_rate(struct clk_hw *hw, unsigned long rate,
+					 unsigned long *prate)
 {
 	struct clk_frac *frac = to_clk_frac(hw);
 	unsigned long parent_rate = *prate;
diff --git a/drivers/clk/mxs/clk-ref.c b/drivers/clk/mxs/clk-ref.c
index 495f99b..c3eb948 100644
--- a/drivers/clk/mxs/clk-ref.c
+++ b/drivers/clk/mxs/clk-ref.c
@@ -63,8 +63,8 @@ static unsigned long clk_ref_recalc_rate(struct clk_hw *hw,
 	return tmp;
 }
 
-static long clk_ref_round_rate(struct clk_hw *hw, unsigned long rate,
-			       unsigned long *prate)
+static unsigned long clk_ref_round_rate(struct clk_hw *hw, unsigned long rate,
+					unsigned long *prate)
 {
 	unsigned long parent_rate = *prate;
 	u64 tmp = parent_rate;
diff --git a/drivers/clk/nxp/clk-lpc18xx-cgu.c b/drivers/clk/nxp/clk-lpc18xx-cgu.c
index 2531174..e08bad9 100644
--- a/drivers/clk/nxp/clk-lpc18xx-cgu.c
+++ b/drivers/clk/nxp/clk-lpc18xx-cgu.c
@@ -373,8 +373,9 @@ static unsigned long lpc18xx_pll0_recalc_rate(struct clk_hw *hw,
 	return 0;
 }
 
-static long lpc18xx_pll0_round_rate(struct clk_hw *hw, unsigned long rate,
-				    unsigned long *prate)
+static unsigned long lpc18xx_pll0_round_rate(struct clk_hw *hw,
+					     unsigned long rate,
+					     unsigned long *prate)
 {
 	unsigned long m;
 
diff --git a/drivers/clk/nxp/clk-lpc32xx.c b/drivers/clk/nxp/clk-lpc32xx.c
index 7b359af..81ab57d 100644
--- a/drivers/clk/nxp/clk-lpc32xx.c
+++ b/drivers/clk/nxp/clk-lpc32xx.c
@@ -583,8 +583,9 @@ static int clk_pll_set_rate(struct clk_hw *hw, unsigned long rate,
 	return regmap_update_bits(clk_regmap, clk->reg, 0x1FFFF, val);
 }
 
-static long clk_hclk_pll_round_rate(struct clk_hw *hw, unsigned long rate,
-				    unsigned long *parent_rate)
+static unsigned long clk_hclk_pll_round_rate(struct clk_hw *hw,
+					     unsigned long rate,
+					     unsigned long *parent_rate)
 {
 	struct lpc32xx_pll_clk *clk = to_lpc32xx_pll_clk(hw);
 	u64 m_i, o = rate, i = *parent_rate, d = (u64)rate << 6;
@@ -646,8 +647,9 @@ static long clk_hclk_pll_round_rate(struct clk_hw *hw, unsigned long rate,
 	return o;
 }
 
-static long clk_usb_pll_round_rate(struct clk_hw *hw, unsigned long rate,
-				   unsigned long *parent_rate)
+static unsigned long clk_usb_pll_round_rate(struct clk_hw *hw,
+					    unsigned long rate,
+					    unsigned long *parent_rate)
 {
 	struct lpc32xx_pll_clk *clk = to_lpc32xx_pll_clk(hw);
 	struct clk_hw *usb_div_hw, *osc_hw;
@@ -959,8 +961,9 @@ static unsigned long clk_divider_recalc_rate(struct clk_hw *hw,
 				   divider->flags);
 }
 
-static long clk_divider_round_rate(struct clk_hw *hw, unsigned long rate,
-				unsigned long *prate)
+static unsigned long clk_divider_round_rate(struct clk_hw *hw,
+					    unsigned long rate,
+					    unsigned long *prate)
 {
 	struct lpc32xx_clk_div *divider = to_lpc32xx_div(hw);
 	unsigned int bestdiv;
diff --git a/drivers/clk/pistachio/clk-pll.c b/drivers/clk/pistachio/clk-pll.c
index 7e8daab..05fadea 100644
--- a/drivers/clk/pistachio/clk-pll.c
+++ b/drivers/clk/pistachio/clk-pll.c
@@ -142,8 +142,8 @@ pll_get_params(struct pistachio_clk_pll *pll, unsigned long fref,
 	return NULL;
 }
 
-static long pll_round_rate(struct clk_hw *hw, unsigned long rate,
-			   unsigned long *parent_rate)
+static unsigned long pll_round_rate(struct clk_hw *hw, unsigned long rate,
+				    unsigned long *parent_rate)
 {
 	struct pistachio_clk_pll *pll = to_pistachio_pll(hw);
 	unsigned int i;
diff --git a/drivers/clk/qcom/clk-alpha-pll.c b/drivers/clk/qcom/clk-alpha-pll.c
index 47a1da3..4ddf8b31 100644
--- a/drivers/clk/qcom/clk-alpha-pll.c
+++ b/drivers/clk/qcom/clk-alpha-pll.c
@@ -411,8 +411,9 @@ static int clk_alpha_pll_set_rate(struct clk_hw *hw, unsigned long rate,
 	return 0;
 }
 
-static long clk_alpha_pll_round_rate(struct clk_hw *hw, unsigned long rate,
-				     unsigned long *prate)
+static unsigned long clk_alpha_pll_round_rate(struct clk_hw *hw,
+					      unsigned long rate,
+					      unsigned long *prate)
 {
 	struct clk_alpha_pll *pll = to_clk_alpha_pll(hw);
 	u32 l;
@@ -472,7 +473,7 @@ static const struct clk_div_table clk_alpha_div_table[] = {
 	{ }
 };
 
-static long
+static unsigned long
 clk_alpha_pll_postdiv_round_rate(struct clk_hw *hw, unsigned long rate,
 				 unsigned long *prate)
 {
diff --git a/drivers/clk/qcom/clk-regmap-divider.c b/drivers/clk/qcom/clk-regmap-divider.c
index 5348491..21bf297 100644
--- a/drivers/clk/qcom/clk-regmap-divider.c
+++ b/drivers/clk/qcom/clk-regmap-divider.c
@@ -23,8 +23,8 @@ static inline struct clk_regmap_div *to_clk_regmap_div(struct clk_hw *hw)
 	return container_of(to_clk_regmap(hw), struct clk_regmap_div, clkr);
 }
 
-static long div_round_rate(struct clk_hw *hw, unsigned long rate,
-			   unsigned long *prate)
+static unsigned long div_round_rate(struct clk_hw *hw, unsigned long rate,
+				    unsigned long *prate)
 {
 	struct clk_regmap_div *divider = to_clk_regmap_div(hw);
 
diff --git a/drivers/clk/qcom/clk-rpm.c b/drivers/clk/qcom/clk-rpm.c
index c60f61b..62c7597 100644
--- a/drivers/clk/qcom/clk-rpm.c
+++ b/drivers/clk/qcom/clk-rpm.c
@@ -354,8 +354,8 @@ static int clk_rpm_set_rate(struct clk_hw *hw,
 	return ret;
 }
 
-static long clk_rpm_round_rate(struct clk_hw *hw, unsigned long rate,
-			       unsigned long *parent_rate)
+static unsigned long clk_rpm_round_rate(struct clk_hw *hw, unsigned long rate,
+					unsigned long *parent_rate)
 {
 	/*
 	 * RPM handles rate rounding and we don't have a way to
diff --git a/drivers/clk/qcom/clk-smd-rpm.c b/drivers/clk/qcom/clk-smd-rpm.c
index c26d900..0ce935b 100644
--- a/drivers/clk/qcom/clk-smd-rpm.c
+++ b/drivers/clk/qcom/clk-smd-rpm.c
@@ -348,8 +348,9 @@ static int clk_smd_rpm_set_rate(struct clk_hw *hw, unsigned long rate,
 	return ret;
 }
 
-static long clk_smd_rpm_round_rate(struct clk_hw *hw, unsigned long rate,
-				   unsigned long *parent_rate)
+static unsigned long clk_smd_rpm_round_rate(struct clk_hw *hw,
+					    unsigned long rate,
+					    unsigned long *parent_rate)
 {
 	/*
 	 * RPM handles rate rounding and we don't have a way to
diff --git a/drivers/clk/qcom/gcc-ipq4019.c b/drivers/clk/qcom/gcc-ipq4019.c
index 46cb256..804231b 100644
--- a/drivers/clk/qcom/gcc-ipq4019.c
+++ b/drivers/clk/qcom/gcc-ipq4019.c
@@ -1258,8 +1258,9 @@ static const struct clk_fepll_vco gcc_fepll_vco = {
  * It looks up the frequency table and returns the next higher frequency
  * supported in hardware.
  */
-static long clk_cpu_div_round_rate(struct clk_hw *hw, unsigned long rate,
-				   unsigned long *p_rate)
+static unsigned long clk_cpu_div_round_rate(struct clk_hw *hw,
+					    unsigned long rate,
+					    unsigned long *p_rate)
 {
 	struct clk_fepll *pll = to_clk_fepll(hw);
 	struct clk_hw *p_hw;
diff --git a/drivers/clk/renesas/clk-div6.c b/drivers/clk/renesas/clk-div6.c
index 151336d..260de92 100644
--- a/drivers/clk/renesas/clk-div6.c
+++ b/drivers/clk/renesas/clk-div6.c
@@ -105,8 +105,9 @@ static unsigned int cpg_div6_clock_calc_div(unsigned long rate,
 	return clamp_t(unsigned int, div, 1, 64);
 }
 
-static long cpg_div6_clock_round_rate(struct clk_hw *hw, unsigned long rate,
-				      unsigned long *parent_rate)
+static unsigned long cpg_div6_clock_round_rate(struct clk_hw *hw,
+					       unsigned long rate,
+					       unsigned long *parent_rate)
 {
 	unsigned int div = cpg_div6_clock_calc_div(rate, *parent_rate);
 
diff --git a/drivers/clk/renesas/clk-rcar-gen2.c b/drivers/clk/renesas/clk-rcar-gen2.c
index d14cbe1..485182b9 100644
--- a/drivers/clk/renesas/clk-rcar-gen2.c
+++ b/drivers/clk/renesas/clk-rcar-gen2.c
@@ -69,8 +69,8 @@ static unsigned long cpg_z_clk_recalc_rate(struct clk_hw *hw,
 	return div_u64((u64)parent_rate * mult, 32);
 }
 
-static long cpg_z_clk_round_rate(struct clk_hw *hw, unsigned long rate,
-				 unsigned long *parent_rate)
+static unsigned long cpg_z_clk_round_rate(struct clk_hw *hw, unsigned long rate,
+					  unsigned long *parent_rate)
 {
 	unsigned long prate  = *parent_rate;
 	unsigned int mult;
diff --git a/drivers/clk/renesas/rcar-gen2-cpg.c b/drivers/clk/renesas/rcar-gen2-cpg.c
index feb1457..594eff2 100644
--- a/drivers/clk/renesas/rcar-gen2-cpg.c
+++ b/drivers/clk/renesas/rcar-gen2-cpg.c
@@ -65,8 +65,8 @@ static unsigned long cpg_z_clk_recalc_rate(struct clk_hw *hw,
 	return div_u64((u64)parent_rate * mult, 32);
 }
 
-static long cpg_z_clk_round_rate(struct clk_hw *hw, unsigned long rate,
-				 unsigned long *parent_rate)
+static unsigned long cpg_z_clk_round_rate(struct clk_hw *hw, unsigned long rate,
+					  unsigned long *parent_rate)
 {
 	unsigned long prate  = *parent_rate;
 	unsigned int mult;
diff --git a/drivers/clk/renesas/rcar-gen3-cpg.c b/drivers/clk/renesas/rcar-gen3-cpg.c
index 0904886..017b34f 100644
--- a/drivers/clk/renesas/rcar-gen3-cpg.c
+++ b/drivers/clk/renesas/rcar-gen3-cpg.c
@@ -175,8 +175,9 @@ static unsigned int cpg_sd_clock_calc_div(struct sd_clock *clock,
 	return clamp_t(unsigned int, div, clock->div_min, clock->div_max);
 }
 
-static long cpg_sd_clock_round_rate(struct clk_hw *hw, unsigned long rate,
-				      unsigned long *parent_rate)
+static unsigned long cpg_sd_clock_round_rate(struct clk_hw *hw,
+					     unsigned long rate,
+					     unsigned long *parent_rate)
 {
 	struct sd_clock *clock = to_sd_clock(hw);
 	unsigned int div = cpg_sd_clock_calc_div(clock, rate, *parent_rate);
diff --git a/drivers/clk/rockchip/clk-ddr.c b/drivers/clk/rockchip/clk-ddr.c
index e807535..181053b 100644
--- a/drivers/clk/rockchip/clk-ddr.c
+++ b/drivers/clk/rockchip/clk-ddr.c
@@ -64,9 +64,9 @@ rockchip_ddrclk_sip_recalc_rate(struct clk_hw *hw,
 	return res.a0;
 }
 
-static long rockchip_ddrclk_sip_round_rate(struct clk_hw *hw,
-					   unsigned long rate,
-					   unsigned long *prate)
+static unsigned long rockchip_ddrclk_sip_round_rate(struct clk_hw *hw,
+						    unsigned long rate,
+						    unsigned long *prate)
 {
 	struct arm_smccc_res res;
 
diff --git a/drivers/clk/rockchip/clk-pll.c b/drivers/clk/rockchip/clk-pll.c
index dd0433d..7963322 100644
--- a/drivers/clk/rockchip/clk-pll.c
+++ b/drivers/clk/rockchip/clk-pll.c
@@ -69,8 +69,9 @@ static const struct rockchip_pll_rate_table *rockchip_get_pll_settings(
 	return NULL;
 }
 
-static long rockchip_pll_round_rate(struct clk_hw *hw,
-			    unsigned long drate, unsigned long *prate)
+static unsigned long rockchip_pll_round_rate(struct clk_hw *hw,
+					     unsigned long drate,
+					     unsigned long *prate)
 {
 	struct rockchip_clk_pll *pll = to_rockchip_clk_pll(hw);
 	const struct rockchip_pll_rate_table *rate_table = pll->rate_table;
diff --git a/drivers/clk/samsung/clk-cpu.c b/drivers/clk/samsung/clk-cpu.c
index d2c99d8..e94d5dd 100644
--- a/drivers/clk/samsung/clk-cpu.c
+++ b/drivers/clk/samsung/clk-cpu.c
@@ -104,8 +104,9 @@ static void wait_until_mux_stable(void __iomem *mux_reg, u32 mux_pos,
 }
 
 /* common round rate callback useable for all types of CPU clocks */
-static long exynos_cpuclk_round_rate(struct clk_hw *hw,
-			unsigned long drate, unsigned long *prate)
+static unsigned long exynos_cpuclk_round_rate(struct clk_hw *hw,
+					      unsigned long drate,
+					      unsigned long *prate)
 {
 	struct clk_hw *parent = clk_hw_get_parent(hw);
 	*prate = clk_hw_round_rate(parent, drate);
diff --git a/drivers/clk/samsung/clk-pll.c b/drivers/clk/samsung/clk-pll.c
index 1c4c7a3..ebdddb0 100644
--- a/drivers/clk/samsung/clk-pll.c
+++ b/drivers/clk/samsung/clk-pll.c
@@ -48,8 +48,9 @@ static const struct samsung_pll_rate_table *samsung_get_pll_settings(
 	return NULL;
 }
 
-static long samsung_pll_round_rate(struct clk_hw *hw,
-			unsigned long drate, unsigned long *prate)
+static unsigned long samsung_pll_round_rate(struct clk_hw *hw,
+					    unsigned long drate,
+					    unsigned long *prate)
 {
 	struct samsung_clk_pll *pll = to_clk_pll(hw);
 	const struct samsung_pll_rate_table *rate_table = pll->rate_table;
diff --git a/drivers/clk/sirf/clk-atlas7.c b/drivers/clk/sirf/clk-atlas7.c
index be012b4..99703d4 100644
--- a/drivers/clk/sirf/clk-atlas7.c
+++ b/drivers/clk/sirf/clk-atlas7.c
@@ -535,8 +535,8 @@ static unsigned long dto_clk_recalc_rate(struct clk_hw *hw,
 	return rate;
 }
 
-static long dto_clk_round_rate(struct clk_hw *hw, unsigned long rate,
-	unsigned long *parent_rate)
+static unsigned long dto_clk_round_rate(struct clk_hw *hw, unsigned long rate,
+					unsigned long *parent_rate)
 {
 	u64 dividend = rate * DTO_RESL_DOUBLE;
 
diff --git a/drivers/clk/sirf/clk-common.c b/drivers/clk/sirf/clk-common.c
index d8f9efa..3ce6741 100644
--- a/drivers/clk/sirf/clk-common.c
+++ b/drivers/clk/sirf/clk-common.c
@@ -93,8 +93,8 @@ static unsigned long pll_clk_recalc_rate(struct clk_hw *hw,
 	}
 }
 
-static long pll_clk_round_rate(struct clk_hw *hw, unsigned long rate,
-	unsigned long *parent_rate)
+static unsigned long pll_clk_round_rate(struct clk_hw *hw, unsigned long rate,
+					unsigned long *parent_rate)
 {
 	unsigned long fin, nf, nr, od;
 	u64 dividend;
@@ -160,8 +160,8 @@ static int pll_clk_set_rate(struct clk_hw *hw, unsigned long rate,
 	return 0;
 }
 
-static long cpu_clk_round_rate(struct clk_hw *hw, unsigned long rate,
-	unsigned long *parent_rate)
+static unsigned long cpu_clk_round_rate(struct clk_hw *hw, unsigned long rate,
+					unsigned long *parent_rate)
 {
 	/*
 	 * SiRF SoC has not cpu clock control,
@@ -349,8 +349,8 @@ static unsigned long dmn_clk_recalc_rate(struct clk_hw *hw,
 	}
 }
 
-static long dmn_clk_round_rate(struct clk_hw *hw, unsigned long rate,
-	unsigned long *parent_rate)
+static unsigned long dmn_clk_round_rate(struct clk_hw *hw, unsigned long rate,
+					unsigned long *parent_rate)
 {
 	unsigned long fin;
 	unsigned ratio, wait, hold;
diff --git a/drivers/clk/spear/clk-aux-synth.c b/drivers/clk/spear/clk-aux-synth.c
index 9064104..536134d 100644
--- a/drivers/clk/spear/clk-aux-synth.c
+++ b/drivers/clk/spear/clk-aux-synth.c
@@ -52,8 +52,8 @@ static unsigned long aux_calc_rate(struct clk_hw *hw, unsigned long prate,
 			(rtbl[index].yscale * eq)) * 10000;
 }
 
-static long clk_aux_round_rate(struct clk_hw *hw, unsigned long drate,
-		unsigned long *prate)
+static unsigned long clk_aux_round_rate(struct clk_hw *hw, unsigned long drate,
+					unsigned long *prate)
 {
 	struct clk_aux *aux = to_clk_aux(hw);
 	int unused;
diff --git a/drivers/clk/spear/clk-frac-synth.c b/drivers/clk/spear/clk-frac-synth.c
index 229c96d..c9d551c 100644
--- a/drivers/clk/spear/clk-frac-synth.c
+++ b/drivers/clk/spear/clk-frac-synth.c
@@ -55,8 +55,8 @@ static unsigned long frac_calc_rate(struct clk_hw *hw, unsigned long prate,
 	return prate;
 }
 
-static long clk_frac_round_rate(struct clk_hw *hw, unsigned long drate,
-		unsigned long *prate)
+static unsigned long clk_frac_round_rate(struct clk_hw *hw, unsigned long drate,
+					 unsigned long *prate)
 {
 	struct clk_frac *frac = to_clk_frac(hw);
 	int unused;
diff --git a/drivers/clk/spear/clk-gpt-synth.c b/drivers/clk/spear/clk-gpt-synth.c
index 28262f4..5cb8c69 100644
--- a/drivers/clk/spear/clk-gpt-synth.c
+++ b/drivers/clk/spear/clk-gpt-synth.c
@@ -42,8 +42,8 @@ static unsigned long gpt_calc_rate(struct clk_hw *hw, unsigned long prate,
 	return prate;
 }
 
-static long clk_gpt_round_rate(struct clk_hw *hw, unsigned long drate,
-		unsigned long *prate)
+static unsigned long clk_gpt_round_rate(struct clk_hw *hw, unsigned long drate,
+					unsigned long *prate)
 {
 	struct clk_gpt *gpt = to_clk_gpt(hw);
 	int unused;
diff --git a/drivers/clk/spear/clk-vco-pll.c b/drivers/clk/spear/clk-vco-pll.c
index c08dec3..d168897 100644
--- a/drivers/clk/spear/clk-vco-pll.c
+++ b/drivers/clk/spear/clk-vco-pll.c
@@ -81,8 +81,9 @@ static unsigned long pll_calc_rate(struct pll_rate_tbl *rtbl,
 	return rate * 10000;
 }
 
-static long clk_pll_round_rate_index(struct clk_hw *hw, unsigned long drate,
-				unsigned long *prate, int *index)
+static unsigned long clk_pll_round_rate_index(struct clk_hw *hw,
+					      unsigned long drate,
+					      unsigned long *prate, int *index)
 {
 	struct clk_pll *pll = to_clk_pll(hw);
 	unsigned long prev_rate, vco_prev_rate, rate = 0;
@@ -113,8 +114,8 @@ static long clk_pll_round_rate_index(struct clk_hw *hw, unsigned long drate,
 	return rate;
 }
 
-static long clk_pll_round_rate(struct clk_hw *hw, unsigned long drate,
-				unsigned long *prate)
+static unsigned long clk_pll_round_rate(struct clk_hw *hw, unsigned long drate,
+					unsigned long *prate)
 {
 	int unused;
 
@@ -179,8 +180,8 @@ static inline unsigned long vco_calc_rate(struct clk_hw *hw,
 	return pll_calc_rate(vco->rtbl, prate, index, NULL);
 }
 
-static long clk_vco_round_rate(struct clk_hw *hw, unsigned long drate,
-		unsigned long *prate)
+static unsigned long clk_vco_round_rate(struct clk_hw *hw, unsigned long drate,
+					unsigned long *prate)
 {
 	struct clk_vco *vco = to_clk_vco(hw);
 	int unused;
diff --git a/drivers/clk/spear/clk.c b/drivers/clk/spear/clk.c
index 157fe09..335af3b 100644
--- a/drivers/clk/spear/clk.c
+++ b/drivers/clk/spear/clk.c
@@ -13,9 +13,10 @@
 #include <linux/types.h>
 #include "clk.h"
 
-long clk_round_rate_index(struct clk_hw *hw, unsigned long drate,
-		unsigned long parent_rate, clk_calc_rate calc_rate, u8 rtbl_cnt,
-		int *index)
+unsigned long clk_round_rate_index(struct clk_hw *hw, unsigned long drate,
+				   unsigned long parent_rate,
+				   clk_calc_rate calc_rate, u8 rtbl_cnt,
+				   int *index)
 {
 	unsigned long prev_rate, rate = 0;
 
diff --git a/drivers/clk/spear/clk.h b/drivers/clk/spear/clk.h
index af0e25f..c8b81f2 100644
--- a/drivers/clk/spear/clk.h
+++ b/drivers/clk/spear/clk.h
@@ -127,8 +127,9 @@ struct clk *clk_register_vco_pll(const char *vco_name, const char *pll_name,
 		spinlock_t *lock, struct clk **pll_clk,
 		struct clk **vco_gate_clk);
 
-long clk_round_rate_index(struct clk_hw *hw, unsigned long drate,
-		unsigned long parent_rate, clk_calc_rate calc_rate, u8 rtbl_cnt,
-		int *index);
+unsigned long clk_round_rate_index(struct clk_hw *hw, unsigned long drate,
+				   unsigned long parent_rate,
+				   clk_calc_rate calc_rate, u8 rtbl_cnt,
+				   int *index);
 
 #endif /* __SPEAR_CLK_H */
diff --git a/drivers/clk/st/clk-flexgen.c b/drivers/clk/st/clk-flexgen.c
index 918ba31..682ba23 100644
--- a/drivers/clk/st/clk-flexgen.c
+++ b/drivers/clk/st/clk-flexgen.c
@@ -111,8 +111,8 @@ clk_best_div(unsigned long parent_rate, unsigned long rate)
 	return parent_rate / rate + ((rate > (2*(parent_rate % rate))) ? 0 : 1);
 }
 
-static long flexgen_round_rate(struct clk_hw *hw, unsigned long rate,
-				   unsigned long *prate)
+static unsigned long flexgen_round_rate(struct clk_hw *hw, unsigned long rate,
+					unsigned long *prate)
 {
 	unsigned long div;
 
diff --git a/drivers/clk/st/clkgen-fsyn.c b/drivers/clk/st/clkgen-fsyn.c
index 14819d9..f6a1a85 100644
--- a/drivers/clk/st/clkgen-fsyn.c
+++ b/drivers/clk/st/clkgen-fsyn.c
@@ -318,9 +318,9 @@ static int clk_fs660c32_vco_get_params(unsigned long input,
 	return 0;
 }
 
-static long quadfs_pll_fs660c32_round_rate(struct clk_hw *hw,
-					   unsigned long rate,
-					   unsigned long *prate)
+static unsigned long quadfs_pll_fs660c32_round_rate(struct clk_hw *hw,
+						    unsigned long rate,
+						    unsigned long *prate)
 {
 	struct stm_fs params;
 
@@ -757,8 +757,8 @@ static unsigned long quadfs_recalc_rate(struct clk_hw *hw,
 	return rate;
 }
 
-static long quadfs_round_rate(struct clk_hw *hw, unsigned long rate,
-				     unsigned long *prate)
+static unsigned long quadfs_round_rate(struct clk_hw *hw, unsigned long rate,
+				       unsigned long *prate)
 {
 	struct stm_fs params;
 
diff --git a/drivers/clk/st/clkgen-pll.c b/drivers/clk/st/clkgen-pll.c
index 25bda48..64ac4e1 100644
--- a/drivers/clk/st/clkgen-pll.c
+++ b/drivers/clk/st/clkgen-pll.c
@@ -351,8 +351,9 @@ static unsigned long recalc_stm_pll3200c32(struct clk_hw *hw,
 	return rate;
 }
 
-static long round_rate_stm_pll3200c32(struct clk_hw *hw, unsigned long rate,
-		unsigned long *prate)
+static unsigned long round_rate_stm_pll3200c32(struct clk_hw *hw,
+					       unsigned long rate,
+					       unsigned long *prate)
 {
 	struct stm_pll params;
 
@@ -505,8 +506,9 @@ static unsigned long recalc_stm_pll4600c28(struct clk_hw *hw,
 	return rate;
 }
 
-static long round_rate_stm_pll4600c28(struct clk_hw *hw, unsigned long rate,
-				      unsigned long *prate)
+static unsigned long round_rate_stm_pll4600c28(struct clk_hw *hw,
+					       unsigned long rate,
+					       unsigned long *prate)
 {
 	struct stm_pll params;
 
diff --git a/drivers/clk/sunxi-ng/ccu_nk.c b/drivers/clk/sunxi-ng/ccu_nk.c
index 2485bda..031f934 100644
--- a/drivers/clk/sunxi-ng/ccu_nk.c
+++ b/drivers/clk/sunxi-ng/ccu_nk.c
@@ -93,8 +93,8 @@ static unsigned long ccu_nk_recalc_rate(struct clk_hw *hw,
 	return rate;
 }
 
-static long ccu_nk_round_rate(struct clk_hw *hw, unsigned long rate,
-			      unsigned long *parent_rate)
+static unsigned long ccu_nk_round_rate(struct clk_hw *hw, unsigned long rate,
+				       unsigned long *parent_rate)
 {
 	struct ccu_nk *nk = hw_to_ccu_nk(hw);
 	struct _ccu_nk _nk;
diff --git a/drivers/clk/sunxi-ng/ccu_nkmp.c b/drivers/clk/sunxi-ng/ccu_nkmp.c
index e58c957..62fbba7 100644
--- a/drivers/clk/sunxi-ng/ccu_nkmp.c
+++ b/drivers/clk/sunxi-ng/ccu_nkmp.c
@@ -110,8 +110,8 @@ static unsigned long ccu_nkmp_recalc_rate(struct clk_hw *hw,
 	return (parent_rate * n * k >> p) / m;
 }
 
-static long ccu_nkmp_round_rate(struct clk_hw *hw, unsigned long rate,
-			      unsigned long *parent_rate)
+static unsigned long ccu_nkmp_round_rate(struct clk_hw *hw, unsigned long rate,
+					 unsigned long *parent_rate)
 {
 	struct ccu_nkmp *nkmp = hw_to_ccu_nkmp(hw);
 	struct _ccu_nkmp _nkmp;
diff --git a/drivers/clk/sunxi-ng/ccu_nm.c b/drivers/clk/sunxi-ng/ccu_nm.c
index 7620aa9..0f5beb4 100644
--- a/drivers/clk/sunxi-ng/ccu_nm.c
+++ b/drivers/clk/sunxi-ng/ccu_nm.c
@@ -101,8 +101,8 @@ static unsigned long ccu_nm_recalc_rate(struct clk_hw *hw,
 	return parent_rate * n / m;
 }
 
-static long ccu_nm_round_rate(struct clk_hw *hw, unsigned long rate,
-			      unsigned long *parent_rate)
+static unsigned long ccu_nm_round_rate(struct clk_hw *hw, unsigned long rate,
+				       unsigned long *parent_rate)
 {
 	struct ccu_nm *nm = hw_to_ccu_nm(hw);
 	struct _ccu_nm _nm;
diff --git a/drivers/clk/tegra/clk-audio-sync.c b/drivers/clk/tegra/clk-audio-sync.c
index 92d04ce..9784d58 100644
--- a/drivers/clk/tegra/clk-audio-sync.c
+++ b/drivers/clk/tegra/clk-audio-sync.c
@@ -28,8 +28,9 @@ static unsigned long clk_sync_source_recalc_rate(struct clk_hw *hw,
 	return sync->rate;
 }
 
-static long clk_sync_source_round_rate(struct clk_hw *hw, unsigned long rate,
-				       unsigned long *prate)
+static unsigned long clk_sync_source_round_rate(struct clk_hw *hw,
+						unsigned long rate,
+						unsigned long *prate)
 {
 	struct tegra_clk_sync_source *sync = to_clk_sync_source(hw);
 
diff --git a/drivers/clk/tegra/clk-bpmp.c b/drivers/clk/tegra/clk-bpmp.c
index a896692..0c1197b 100644
--- a/drivers/clk/tegra/clk-bpmp.c
+++ b/drivers/clk/tegra/clk-bpmp.c
@@ -167,8 +167,9 @@ static unsigned long tegra_bpmp_clk_recalc_rate(struct clk_hw *hw,
 	return response.rate;
 }
 
-static long tegra_bpmp_clk_round_rate(struct clk_hw *hw, unsigned long rate,
-				      unsigned long *parent_rate)
+static unsigned long tegra_bpmp_clk_round_rate(struct clk_hw *hw,
+					       unsigned long rate,
+					       unsigned long *parent_rate)
 {
 	struct tegra_bpmp_clk *clk = to_tegra_bpmp_clk(hw);
 	struct cmd_clk_round_rate_response response;
diff --git a/drivers/clk/tegra/clk-divider.c b/drivers/clk/tegra/clk-divider.c
index 16e0aee..d827943 100644
--- a/drivers/clk/tegra/clk-divider.c
+++ b/drivers/clk/tegra/clk-divider.c
@@ -84,8 +84,9 @@ static unsigned long clk_frac_div_recalc_rate(struct clk_hw *hw,
 	return rate;
 }
 
-static long clk_frac_div_round_rate(struct clk_hw *hw, unsigned long rate,
-				   unsigned long *prate)
+static unsigned long clk_frac_div_round_rate(struct clk_hw *hw,
+					     unsigned long rate,
+					     unsigned long *prate)
 {
 	struct tegra_clk_frac_div *divider = to_clk_frac_div(hw);
 	int div, mul;
diff --git a/drivers/clk/tegra/clk-periph.c b/drivers/clk/tegra/clk-periph.c
index 9475c00..e68104c 100644
--- a/drivers/clk/tegra/clk-periph.c
+++ b/drivers/clk/tegra/clk-periph.c
@@ -55,8 +55,9 @@ static unsigned long clk_periph_recalc_rate(struct clk_hw *hw,
 	return div_ops->recalc_rate(div_hw, parent_rate);
 }
 
-static long clk_periph_round_rate(struct clk_hw *hw, unsigned long rate,
-				  unsigned long *prate)
+static unsigned long clk_periph_round_rate(struct clk_hw *hw,
+					   unsigned long rate,
+					   unsigned long *prate)
 {
 	struct tegra_clk_periph *periph = to_clk_periph(hw);
 	const struct clk_ops *div_ops = periph->div_ops;
diff --git a/drivers/clk/tegra/clk-pll.c b/drivers/clk/tegra/clk-pll.c
index 7c369e2..b4a7d30 100644
--- a/drivers/clk/tegra/clk-pll.c
+++ b/drivers/clk/tegra/clk-pll.c
@@ -824,8 +824,8 @@ static int clk_pll_set_rate(struct clk_hw *hw, unsigned long rate,
 	return ret;
 }
 
-static long clk_pll_round_rate(struct clk_hw *hw, unsigned long rate,
-			unsigned long *prate)
+static unsigned long clk_pll_round_rate(struct clk_hw *hw, unsigned long rate,
+					unsigned long *prate)
 {
 	struct tegra_clk_pll *pll = to_clk_pll(hw);
 	struct tegra_clk_pll_freq_table cfg;
@@ -1307,8 +1307,9 @@ static int clk_pllxc_set_rate(struct clk_hw *hw, unsigned long rate,
 	return ret;
 }
 
-static long clk_pll_ramp_round_rate(struct clk_hw *hw, unsigned long rate,
-				unsigned long *prate)
+static unsigned long clk_pll_ramp_round_rate(struct clk_hw *hw,
+					     unsigned long rate,
+					     unsigned long *prate)
 {
 	struct tegra_clk_pll *pll = to_clk_pll(hw);
 	struct tegra_clk_pll_freq_table cfg;
@@ -1549,8 +1550,8 @@ static unsigned long clk_pllre_recalc_rate(struct clk_hw *hw,
 	return rate;
 }
 
-static long clk_pllre_round_rate(struct clk_hw *hw, unsigned long rate,
-				 unsigned long *prate)
+static unsigned long clk_pllre_round_rate(struct clk_hw *hw, unsigned long rate,
+					  unsigned long *prate)
 {
 	struct tegra_clk_pll *pll = to_clk_pll(hw);
 
diff --git a/drivers/clk/tegra/clk-super.c b/drivers/clk/tegra/clk-super.c
index 84267cf..a8fa71e 100644
--- a/drivers/clk/tegra/clk-super.c
+++ b/drivers/clk/tegra/clk-super.c
@@ -126,8 +126,8 @@ const struct clk_ops tegra_clk_super_mux_ops = {
 	.set_parent = clk_super_set_parent,
 };
 
-static long clk_super_round_rate(struct clk_hw *hw, unsigned long rate,
-				 unsigned long *parent_rate)
+static unsigned long clk_super_round_rate(struct clk_hw *hw, unsigned long rate,
+					  unsigned long *parent_rate)
 {
 	struct tegra_clk_super_mux *super = to_clk_super_mux(hw);
 	struct clk_hw *div_hw = &super->frac_div.hw;
diff --git a/drivers/clk/ti/clk-dra7-atl.c b/drivers/clk/ti/clk-dra7-atl.c
index 1488154..bd689ce 100644
--- a/drivers/clk/ti/clk-dra7-atl.c
+++ b/drivers/clk/ti/clk-dra7-atl.c
@@ -128,8 +128,8 @@ static unsigned long atl_clk_recalc_rate(struct clk_hw *hw,
 	return parent_rate / cdesc->divider;
 }
 
-static long atl_clk_round_rate(struct clk_hw *hw, unsigned long rate,
-			       unsigned long *parent_rate)
+static unsigned long atl_clk_round_rate(struct clk_hw *hw, unsigned long rate,
+					unsigned long *parent_rate)
 {
 	unsigned divider;
 
diff --git a/drivers/clk/ti/composite.c b/drivers/clk/ti/composite.c
index beea894..2477cf1 100644
--- a/drivers/clk/ti/composite.c
+++ b/drivers/clk/ti/composite.c
@@ -34,8 +34,9 @@ static unsigned long ti_composite_recalc_rate(struct clk_hw *hw,
 	return ti_clk_divider_ops.recalc_rate(hw, parent_rate);
 }
 
-static long ti_composite_round_rate(struct clk_hw *hw, unsigned long rate,
-				    unsigned long *prate)
+static unsigned long ti_composite_round_rate(struct clk_hw *hw,
+					     unsigned long rate,
+					     unsigned long *prate)
 {
 	return -EINVAL;
 }
diff --git a/drivers/clk/ti/divider.c b/drivers/clk/ti/divider.c
index 77f93f6..a194250 100644
--- a/drivers/clk/ti/divider.c
+++ b/drivers/clk/ti/divider.c
@@ -227,8 +227,9 @@ static int ti_clk_divider_bestdiv(struct clk_hw *hw, unsigned long rate,
 	return bestdiv;
 }
 
-static long ti_clk_divider_round_rate(struct clk_hw *hw, unsigned long rate,
-				      unsigned long *prate)
+static unsigned long ti_clk_divider_round_rate(struct clk_hw *hw,
+					       unsigned long rate,
+					       unsigned long *prate)
 {
 	int div;
 	div = ti_clk_divider_bestdiv(hw, rate, prate);
diff --git a/drivers/clk/ti/fapll.c b/drivers/clk/ti/fapll.c
index 071af44..2e74437 100644
--- a/drivers/clk/ti/fapll.c
+++ b/drivers/clk/ti/fapll.c
@@ -220,8 +220,8 @@ static int ti_fapll_set_div_mult(unsigned long rate,
 	return 0;
 }
 
-static long ti_fapll_round_rate(struct clk_hw *hw, unsigned long rate,
-				unsigned long *parent_rate)
+static unsigned long ti_fapll_round_rate(struct clk_hw *hw, unsigned long rate,
+					 unsigned long *parent_rate)
 {
 	u32 pre_div_p, mult_n;
 	int error;
@@ -405,8 +405,9 @@ static u32 ti_fapll_synth_set_frac_rate(struct fapll_synth *synth,
 	return post_div_m;
 }
 
-static long ti_fapll_synth_round_rate(struct clk_hw *hw, unsigned long rate,
-				      unsigned long *parent_rate)
+static unsigned long ti_fapll_synth_round_rate(struct clk_hw *hw,
+					       unsigned long rate,
+					       unsigned long *parent_rate)
 {
 	struct fapll_synth *synth = to_synth(hw);
 	struct fapll_data *fd = synth->fd;
diff --git a/drivers/clk/ux500/clk-prcmu.c b/drivers/clk/ux500/clk-prcmu.c
index 9d1f2d4..8eb7c7a 100644
--- a/drivers/clk/ux500/clk-prcmu.c
+++ b/drivers/clk/ux500/clk-prcmu.c
@@ -80,8 +80,8 @@ static unsigned long clk_prcmu_recalc_rate(struct clk_hw *hw,
 	return prcmu_clock_rate(clk->cg_sel);
 }
 
-static long clk_prcmu_round_rate(struct clk_hw *hw, unsigned long rate,
-				 unsigned long *parent_rate)
+static unsigned long clk_prcmu_round_rate(struct clk_hw *hw, unsigned long rate,
+					  unsigned long *parent_rate)
 {
 	struct clk_prcmu *clk = to_clk_prcmu(hw);
 	return prcmu_round_clock_rate(clk->cg_sel, rate);
diff --git a/drivers/clk/versatile/clk-icst.c b/drivers/clk/versatile/clk-icst.c
index dafe7a4..2fb3cdc 100644
--- a/drivers/clk/versatile/clk-icst.c
+++ b/drivers/clk/versatile/clk-icst.c
@@ -248,8 +248,8 @@ static unsigned long icst_recalc_rate(struct clk_hw *hw,
 	return icst->rate;
 }
 
-static long icst_round_rate(struct clk_hw *hw, unsigned long rate,
-			    unsigned long *prate)
+static unsigned long icst_round_rate(struct clk_hw *hw, unsigned long rate,
+				     unsigned long *prate)
 {
 	struct clk_icst *icst = to_icst(hw);
 	struct icst_vco vco;
diff --git a/drivers/clk/versatile/clk-vexpress-osc.c b/drivers/clk/versatile/clk-vexpress-osc.c
index e7a868b..0d02097 100644
--- a/drivers/clk/versatile/clk-vexpress-osc.c
+++ b/drivers/clk/versatile/clk-vexpress-osc.c
@@ -39,8 +39,9 @@ static unsigned long vexpress_osc_recalc_rate(struct clk_hw *hw,
 	return rate;
 }
 
-static long vexpress_osc_round_rate(struct clk_hw *hw, unsigned long rate,
-		unsigned long *parent_rate)
+static unsigned long vexpress_osc_round_rate(struct clk_hw *hw,
+					     unsigned long rate,
+					     unsigned long *parent_rate)
 {
 	struct vexpress_osc *osc = to_vexpress_osc(hw);
 
diff --git a/drivers/clk/zte/clk.c b/drivers/clk/zte/clk.c
index b820317..df91842 100644
--- a/drivers/clk/zte/clk.c
+++ b/drivers/clk/zte/clk.c
@@ -78,8 +78,8 @@ static unsigned long zx_pll_recalc_rate(struct clk_hw *hw,
 	return zx_pll->lookup_table[idx].rate;
 }
 
-static long zx_pll_round_rate(struct clk_hw *hw, unsigned long rate,
-			      unsigned long *prate)
+static unsigned long zx_pll_round_rate(struct clk_hw *hw, unsigned long rate,
+				       unsigned long *prate)
 {
 	struct clk_zx_pll *zx_pll = to_clk_zx_pll(hw);
 	int idx;
@@ -241,8 +241,8 @@ static unsigned long zx_audio_recalc_rate(struct clk_hw *hw,
 	return calc_rate(reg, parent_rate);
 }
 
-static long zx_audio_round_rate(struct clk_hw *hw, unsigned long rate,
-				unsigned long *prate)
+static unsigned long zx_audio_round_rate(struct clk_hw *hw, unsigned long rate,
+					 unsigned long *prate)
 {
 	u32 reg;
 
@@ -404,8 +404,9 @@ static unsigned long zx_audio_div_recalc_rate(struct clk_hw *hw,
 	return audio_calc_rate(zx_audio_div, reg_frac, reg_int, parent_rate);
 }
 
-static long zx_audio_div_round_rate(struct clk_hw *hw, unsigned long rate,
-				unsigned long *prate)
+static unsigned long zx_audio_div_round_rate(struct clk_hw *hw,
+					     unsigned long rate,
+					     unsigned long *prate)
 {
 	struct clk_zx_audio_divider *zx_audio_div = to_clk_zx_audio_div(hw);
 	struct zx_clk_audio_div_table divt;
diff --git a/drivers/clk/zynq/pll.c b/drivers/clk/zynq/pll.c
index 00d72fb..827a375 100644
--- a/drivers/clk/zynq/pll.c
+++ b/drivers/clk/zynq/pll.c
@@ -60,8 +60,8 @@ struct zynq_pll {
  * @prate:	Clock frequency of parent clock
  * Returns frequency closest to @rate the hardware can generate.
  */
-static long zynq_pll_round_rate(struct clk_hw *hw, unsigned long rate,
-		unsigned long *prate)
+static unsigned long zynq_pll_round_rate(struct clk_hw *hw, unsigned long rate,
+					 unsigned long *prate)
 {
 	u32 fbdiv;
 
diff --git a/drivers/gpu/drm/imx/imx-tve.c b/drivers/gpu/drm/imx/imx-tve.c
index bc27c26..8533bd5 100644
--- a/drivers/gpu/drm/imx/imx-tve.c
+++ b/drivers/gpu/drm/imx/imx-tve.c
@@ -402,8 +402,9 @@ static unsigned long clk_tve_di_recalc_rate(struct clk_hw *hw,
 	return 0;
 }
 
-static long clk_tve_di_round_rate(struct clk_hw *hw, unsigned long rate,
-				  unsigned long *prate)
+static unsigned long clk_tve_di_round_rate(struct clk_hw *hw,
+					   unsigned long rate,
+					   unsigned long *prate)
 {
 	unsigned long div;
 
diff --git a/drivers/gpu/drm/mediatek/mtk_mipi_tx.c b/drivers/gpu/drm/mediatek/mtk_mipi_tx.c
index 90e9131..b7e920c 100644
--- a/drivers/gpu/drm/mediatek/mtk_mipi_tx.c
+++ b/drivers/gpu/drm/mediatek/mtk_mipi_tx.c
@@ -289,8 +289,9 @@ static void mtk_mipi_tx_pll_unprepare(struct clk_hw *hw)
 			       RG_DSI_MPPLL_DIV_MSK);
 }
 
-static long mtk_mipi_tx_pll_round_rate(struct clk_hw *hw, unsigned long rate,
-				       unsigned long *prate)
+static unsigned long mtk_mipi_tx_pll_round_rate(struct clk_hw *hw,
+						unsigned long rate,
+						unsigned long *prate)
 {
 	return clamp_val(rate, 50000000, 1250000000);
 }
diff --git a/drivers/gpu/drm/mediatek/mtk_mt8173_hdmi_phy.c b/drivers/gpu/drm/mediatek/mtk_mt8173_hdmi_phy.c
index 51cb9cf..3a031bd 100644
--- a/drivers/gpu/drm/mediatek/mtk_mt8173_hdmi_phy.c
+++ b/drivers/gpu/drm/mediatek/mtk_mt8173_hdmi_phy.c
@@ -345,8 +345,9 @@ static int mtk_hdmi_pll_set_rate(struct clk_hw *hw, unsigned long rate,
 	return 0;
 }
 
-static long mtk_hdmi_pll_round_rate(struct clk_hw *hw, unsigned long rate,
-				    unsigned long *parent_rate)
+static unsigned long mtk_hdmi_pll_round_rate(struct clk_hw *hw,
+					     unsigned long rate,
+					     unsigned long *parent_rate)
 {
 	struct mtk_hdmi_phy *hdmi_phy = to_mtk_hdmi_phy(hw);
 
diff --git a/drivers/gpu/drm/msm/dsi/pll/dsi_pll.c b/drivers/gpu/drm/msm/dsi/pll/dsi_pll.c
index bc289f5..a8ceb80 100644
--- a/drivers/gpu/drm/msm/dsi/pll/dsi_pll.c
+++ b/drivers/gpu/drm/msm/dsi/pll/dsi_pll.c
@@ -56,8 +56,9 @@ static void dsi_pll_disable(struct msm_dsi_pll *pll)
 /*
  * DSI PLL Helper functions
  */
-long msm_dsi_pll_helper_clk_round_rate(struct clk_hw *hw,
-		unsigned long rate, unsigned long *parent_rate)
+unsigned long msm_dsi_pll_helper_clk_round_rate(struct clk_hw *hw,
+						unsigned long rate,
+						unsigned long *parent_rate)
 {
 	struct msm_dsi_pll *pll = hw_clk_to_pll(hw);
 
diff --git a/drivers/gpu/drm/msm/dsi/pll/dsi_pll.h b/drivers/gpu/drm/msm/dsi/pll/dsi_pll.h
index f63e7ad..66e5a2a 100644
--- a/drivers/gpu/drm/msm/dsi/pll/dsi_pll.h
+++ b/drivers/gpu/drm/msm/dsi/pll/dsi_pll.h
@@ -74,8 +74,9 @@ static inline void pll_write_ndelay(void __iomem *reg, u32 data, u32 delay_ns)
  */
 
 /* clock callbacks */
-long msm_dsi_pll_helper_clk_round_rate(struct clk_hw *hw,
-		unsigned long rate, unsigned long *parent_rate);
+unsigned long msm_dsi_pll_helper_clk_round_rate(struct clk_hw *hw,
+						unsigned long rate,
+						unsigned long *parent_rate);
 int msm_dsi_pll_helper_clk_prepare(struct clk_hw *hw);
 void msm_dsi_pll_helper_clk_unprepare(struct clk_hw *hw);
 /* misc */
diff --git a/drivers/gpu/drm/msm/dsi/pll/dsi_pll_14nm.c b/drivers/gpu/drm/msm/dsi/pll/dsi_pll_14nm.c
index fe15aa6..eba0a32 100644
--- a/drivers/gpu/drm/msm/dsi/pll/dsi_pll_14nm.c
+++ b/drivers/gpu/drm/msm/dsi/pll/dsi_pll_14nm.c
@@ -701,9 +701,9 @@ static unsigned long dsi_pll_14nm_postdiv_recalc_rate(struct clk_hw *hw,
 				   postdiv->flags);
 }
 
-static long dsi_pll_14nm_postdiv_round_rate(struct clk_hw *hw,
-					    unsigned long rate,
-					    unsigned long *prate)
+static unsigned long dsi_pll_14nm_postdiv_round_rate(struct clk_hw *hw,
+						     unsigned long rate,
+						     unsigned long *prate)
 {
 	struct dsi_pll_14nm_postdiv *postdiv = to_pll_14nm_postdiv(hw);
 	struct dsi_pll_14nm *pll_14nm = postdiv->pll;
diff --git a/drivers/gpu/drm/msm/dsi/pll/dsi_pll_28nm_8960.c b/drivers/gpu/drm/msm/dsi/pll/dsi_pll_28nm_8960.c
index 4900845..f081731 100644
--- a/drivers/gpu/drm/msm/dsi/pll/dsi_pll_28nm_8960.c
+++ b/drivers/gpu/drm/msm/dsi/pll/dsi_pll_28nm_8960.c
@@ -252,8 +252,9 @@ static unsigned int get_vco_mul_factor(unsigned long byte_clk_rate)
 		return 8;
 }
 
-static long clk_bytediv_round_rate(struct clk_hw *hw, unsigned long rate,
-				   unsigned long *prate)
+static unsigned long clk_bytediv_round_rate(struct clk_hw *hw,
+					    unsigned long rate,
+					    unsigned long *prate)
 {
 	unsigned long best_parent;
 	unsigned int factor;
diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_phy_8996.c b/drivers/gpu/drm/msm/hdmi/hdmi_phy_8996.c
index 0df504c..46ca7a5 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi_phy_8996.c
+++ b/drivers/gpu/drm/msm/hdmi/hdmi_phy_8996.c
@@ -636,9 +636,9 @@ static int hdmi_8996_pll_prepare(struct clk_hw *hw)
 	return 0;
 }
 
-static long hdmi_8996_pll_round_rate(struct clk_hw *hw,
-				     unsigned long rate,
-				     unsigned long *parent_rate)
+static unsigned long hdmi_8996_pll_round_rate(struct clk_hw *hw,
+					      unsigned long rate,
+					      unsigned long *parent_rate)
 {
 	if (rate < HDMI_PCLK_MIN_FREQ)
 		return HDMI_PCLK_MIN_FREQ;
diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_pll_8960.c b/drivers/gpu/drm/msm/hdmi/hdmi_pll_8960.c
index 9959075..a0c3650 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi_pll_8960.c
+++ b/drivers/gpu/drm/msm/hdmi/hdmi_pll_8960.c
@@ -382,8 +382,8 @@ static unsigned long hdmi_pll_recalc_rate(struct clk_hw *hw,
 	return pll->pixclk;
 }
 
-static long hdmi_pll_round_rate(struct clk_hw *hw, unsigned long rate,
-				unsigned long *parent_rate)
+static unsigned long hdmi_pll_round_rate(struct clk_hw *hw, unsigned long rate,
+					 unsigned long *parent_rate)
 {
 	const struct pll_rate *pll_rate = find_rate(rate);
 
diff --git a/drivers/gpu/drm/msm/mdp/mdp4/mdp4_lvds_pll.c b/drivers/gpu/drm/msm/mdp/mdp4/mdp4_lvds_pll.c
index ce42459..fdbbef3 100644
--- a/drivers/gpu/drm/msm/mdp/mdp4/mdp4_lvds_pll.c
+++ b/drivers/gpu/drm/msm/mdp/mdp4/mdp4_lvds_pll.c
@@ -109,8 +109,9 @@ static unsigned long mpd4_lvds_pll_recalc_rate(struct clk_hw *hw,
 	return lvds_pll->pixclk;
 }
 
-static long mpd4_lvds_pll_round_rate(struct clk_hw *hw, unsigned long rate,
-		unsigned long *parent_rate)
+static unsigned long mpd4_lvds_pll_round_rate(struct clk_hw *hw,
+					      unsigned long rate,
+					      unsigned long *parent_rate)
 {
 	const struct pll_rate *pll_rate = find_rate(rate);
 	return pll_rate->rate;
diff --git a/drivers/gpu/drm/pl111/pl111_display.c b/drivers/gpu/drm/pl111/pl111_display.c
index 06c4bf7..d7e99d9 100644
--- a/drivers/gpu/drm/pl111/pl111_display.c
+++ b/drivers/gpu/drm/pl111/pl111_display.c
@@ -338,8 +338,9 @@ static int pl111_clk_div_choose_div(struct clk_hw *hw, unsigned long rate,
 	return best_div;
 }
 
-static long pl111_clk_div_round_rate(struct clk_hw *hw, unsigned long rate,
-				     unsigned long *prate)
+static unsigned long pl111_clk_div_round_rate(struct clk_hw *hw,
+					      unsigned long rate,
+					      unsigned long *prate)
 {
 	int div = pl111_clk_div_choose_div(hw, rate, prate, true);
 
diff --git a/drivers/gpu/drm/sun4i/sun4i_dotclock.c b/drivers/gpu/drm/sun4i/sun4i_dotclock.c
index d401156..4bb7ae7 100644
--- a/drivers/gpu/drm/sun4i/sun4i_dotclock.c
+++ b/drivers/gpu/drm/sun4i/sun4i_dotclock.c
@@ -70,8 +70,9 @@ static unsigned long sun4i_dclk_recalc_rate(struct clk_hw *hw,
 	return parent_rate / val;
 }
 
-static long sun4i_dclk_round_rate(struct clk_hw *hw, unsigned long rate,
-				  unsigned long *parent_rate)
+static unsigned long sun4i_dclk_round_rate(struct clk_hw *hw,
+					   unsigned long rate,
+					   unsigned long *parent_rate)
 {
 	unsigned long best_parent = 0;
 	u8 best_div = 1;
diff --git a/drivers/media/platform/omap3isp/isp.c b/drivers/media/platform/omap3isp/isp.c
index b7ff384..3461f9d 100644
--- a/drivers/media/platform/omap3isp/isp.c
+++ b/drivers/media/platform/omap3isp/isp.c
@@ -243,8 +243,8 @@ static u32 isp_xclk_calc_divider(unsigned long *rate, unsigned long parent_rate)
 	return divider;
 }
 
-static long isp_xclk_round_rate(struct clk_hw *hw, unsigned long rate,
-				unsigned long *parent_rate)
+static unsigned long isp_xclk_round_rate(struct clk_hw *hw, unsigned long rate,
+					 unsigned long *parent_rate)
 {
 	isp_xclk_calc_divider(&rate, *parent_rate);
 	return rate;
diff --git a/drivers/rtc/rtc-ac100.c b/drivers/rtc/rtc-ac100.c
index 9e33618..0bd0685 100644
--- a/drivers/rtc/rtc-ac100.c
+++ b/drivers/rtc/rtc-ac100.c
@@ -146,8 +146,9 @@ static unsigned long ac100_clkout_recalc_rate(struct clk_hw *hw,
 				   CLK_DIVIDER_POWER_OF_TWO);
 }
 
-static long ac100_clkout_round_rate(struct clk_hw *hw, unsigned long rate,
-				    unsigned long prate)
+static unsigned long ac100_clkout_round_rate(struct clk_hw *hw,
+					     unsigned long rate,
+					     unsigned long prate)
 {
 	unsigned long best_rate = 0, tmp_rate, tmp_prate;
 	int i;
diff --git a/drivers/rtc/rtc-ds1307.c b/drivers/rtc/rtc-ds1307.c
index 923dde9..d6fb29d 100644
--- a/drivers/rtc/rtc-ds1307.c
+++ b/drivers/rtc/rtc-ds1307.c
@@ -1166,8 +1166,9 @@ static unsigned long ds3231_clk_sqw_recalc_rate(struct clk_hw *hw,
 	return ds3231_clk_sqw_rates[rate_sel];
 }
 
-static long ds3231_clk_sqw_round_rate(struct clk_hw *hw, unsigned long rate,
-				      unsigned long *prate)
+static unsigned long ds3231_clk_sqw_round_rate(struct clk_hw *hw,
+					       unsigned long rate,
+					       unsigned long *prate)
 {
 	int i;
 
diff --git a/drivers/rtc/rtc-hym8563.c b/drivers/rtc/rtc-hym8563.c
index e5ad527..426b1f7 100644
--- a/drivers/rtc/rtc-hym8563.c
+++ b/drivers/rtc/rtc-hym8563.c
@@ -313,8 +313,9 @@ static unsigned long hym8563_clkout_recalc_rate(struct clk_hw *hw,
 	return clkout_rates[ret];
 }
 
-static long hym8563_clkout_round_rate(struct clk_hw *hw, unsigned long rate,
-				      unsigned long *prate)
+static unsigned long hym8563_clkout_round_rate(struct clk_hw *hw,
+					       unsigned long rate,
+					       unsigned long *prate)
 {
 	int i;
 
diff --git a/drivers/rtc/rtc-m41t80.c b/drivers/rtc/rtc-m41t80.c
index c90fba3..40a89e3 100644
--- a/drivers/rtc/rtc-m41t80.c
+++ b/drivers/rtc/rtc-m41t80.c
@@ -469,8 +469,9 @@ static unsigned long m41t80_sqw_recalc_rate(struct clk_hw *hw,
 	return sqw_to_m41t80_data(hw)->freq;
 }
 
-static long m41t80_sqw_round_rate(struct clk_hw *hw, unsigned long rate,
-				  unsigned long *prate)
+static unsigned long m41t80_sqw_round_rate(struct clk_hw *hw,
+					   unsigned long rate,
+					   unsigned long *prate)
 {
 	if (rate >= M41T80_SQW_MAX_FREQ)
 		return M41T80_SQW_MAX_FREQ;
diff --git a/drivers/rtc/rtc-pcf8563.c b/drivers/rtc/rtc-pcf8563.c
index 3efc86c..57b12cb 100644
--- a/drivers/rtc/rtc-pcf8563.c
+++ b/drivers/rtc/rtc-pcf8563.c
@@ -425,8 +425,9 @@ static unsigned long pcf8563_clkout_recalc_rate(struct clk_hw *hw,
 	return clkout_rates[buf];
 }
 
-static long pcf8563_clkout_round_rate(struct clk_hw *hw, unsigned long rate,
-				      unsigned long *prate)
+static unsigned long pcf8563_clkout_round_rate(struct clk_hw *hw,
+					       unsigned long rate,
+					       unsigned long *prate)
 {
 	int i;
 
diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h
index 7c925e6..79b1d6e 100644
--- a/include/linux/clk-provider.h
+++ b/include/linux/clk-provider.h
@@ -200,8 +200,8 @@ struct clk_ops {
 	void		(*disable_unused)(struct clk_hw *hw);
 	unsigned long	(*recalc_rate)(struct clk_hw *hw,
 					unsigned long parent_rate);
-	long		(*round_rate)(struct clk_hw *hw, unsigned long rate,
-					unsigned long *parent_rate);
+	unsigned long	(*round_rate)(struct clk_hw *hw, unsigned long rate,
+				      unsigned long *parent_rate);
 	int		(*determine_rate)(struct clk_hw *hw,
 					  struct clk_rate_request *req);
 	int		(*set_parent)(struct clk_hw *hw, u8 index);
-- 
2.7.4

Re: [PATCH 01/33] clk_ops: change round_rate() to return unsigned long

[Mikko Perttunen]

FWIW, we had this problem some years ago with the Tegra CPU clock - then 
it was determined that a simpler solution was to have the determine_rate 
callback support unsigned long rates - so clock drivers that need to 
return rates higher than 2^31 can instead implement the determine_rate 
callback. That is what's currently implemented.

Mikko

On 12/30/2017 03:12 AM, Bryan O'Donoghue wrote:
> Right now it is not possible to return a value larger than LONG_MAX on 32
> bit systems. You can pass a rate of ULONG_MAX but can't return anything
> past LONG_MAX due to the fact both the rounded_rate and negative error
> codes are represented in the return value of round_rate().
> 
> Most implementations either return zero on error or don't return error
> codes at all. A minority of implementations do return a negative number -
> typically -EINVAL or -ENODEV.
> 
> At the higher level then callers of round_rate() typically and rightly
> check for a value of <= 0.
> 
> It is possible then to convert round_rate() to an unsigned long return
> value and change error code indication for the minority from -ERRORCODE to
> a simple 0.
> 
> This patch is the first step in making it possible to scale round_rate past
> LONG_MAX, later patches will change the previously mentioned minority of
> round_rate() implementations to return zero only on error if those
> implementations currently return a negative error number. Implementations
> that do not return an error code of < 0 will be left as-is.
> 
> Signed-off-by: Bryan O'Donoghue <pure.logic@nexus-software.ie>
> Cc: Michael Turquette <mturquette@baylibre.com>
> Cc: Stephen Boyd <sboyd@codeaurora.org>
> Cc: linux-omap@vger.kernel.org
> Cc: linux-arm-kernel@lists.infradead.org
> Cc: linux-kernel@vger.kernel.org
> Cc: linux-mips@linux-mips.org
> Cc: linux-clk@vger.kernel.org
> Cc: linux-rpi-kernel@lists.infradead.org
> Cc: patches@opensource.cirrus.com
> Cc: uclinux-h8-devel@lists.sourceforge.jp
> Cc: linux-amlogic@lists.infradead.org
> Cc: linux-arm-msm@vger.kernel.org
> Cc: linux-soc@vger.kernel.org
> Cc: linux-renesas-soc@vger.kernel.org
> Cc: linux-rockchip@lists.infradead.org
> Cc: linux-samsung-soc@vger.kernel.org
> Cc: linux-tegra@vger.kernel.org
> Cc: dri-devel@lists.freedesktop.org
> Cc: linux-mediatek@lists.infradead.org
> Cc: freedreno@lists.freedesktop.org
> Cc: linux-media@vger.kernel.org
> Cc: linux-rtc@vger.kernel.org
> ---
>   arch/arm/mach-omap2/clkt2xxx_virt_prcm_set.c    |  4 ++--
>   arch/arm/mach-omap2/clock2xxx.h                 |  4 ++--
>   arch/arm/mach-vexpress/spc.c                    |  4 ++--
>   arch/mips/alchemy/common/clock.c                |  2 +-
>   drivers/clk/at91/clk-audio-pll.c                | 10 ++++++----
>   drivers/clk/at91/clk-h32mx.c                    |  5 +++--
>   drivers/clk/at91/clk-peripheral.c               |  6 +++---
>   drivers/clk/at91/clk-pll.c                      |  2 +-
>   drivers/clk/at91/clk-plldiv.c                   |  5 +++--
>   drivers/clk/at91/clk-smd.c                      |  5 +++--
>   drivers/clk/at91/clk-usb.c                      |  5 +++--
>   drivers/clk/axs10x/i2s_pll_clock.c              |  4 ++--
>   drivers/clk/axs10x/pll_clock.c                  |  5 +++--
>   drivers/clk/bcm/clk-bcm2835.c                   | 11 ++++++-----
>   drivers/clk/bcm/clk-iproc-asiu.c                |  5 +++--
>   drivers/clk/bcm/clk-iproc-pll.c                 |  8 ++++----
>   drivers/clk/clk-axi-clkgen.c                    |  5 +++--
>   drivers/clk/clk-cdce706.c                       | 15 +++++++++------
>   drivers/clk/clk-cdce925.c                       | 15 +++++++++------
>   drivers/clk/clk-composite.c                     |  5 +++--
>   drivers/clk/clk-cs2000-cp.c                     |  4 ++--
>   drivers/clk/clk-divider.c                       |  5 +++--
>   drivers/clk/clk-fixed-factor.c                  |  5 +++--
>   drivers/clk/clk-fractional-divider.c            |  4 ++--
>   drivers/clk/clk-gemini.c                        |  5 +++--
>   drivers/clk/clk-highbank.c                      | 10 ++++++----
>   drivers/clk/clk-hsdk-pll.c                      |  4 ++--
>   drivers/clk/clk-multiplier.c                    |  5 +++--
>   drivers/clk/clk-scpi.c                          |  8 ++++----
>   drivers/clk/clk-si514.c                         |  4 ++--
>   drivers/clk/clk-si5351.c                        | 15 +++++++++------
>   drivers/clk/clk-si570.c                         |  4 ++--
>   drivers/clk/clk-stm32f4.c                       | 15 +++++++++------
>   drivers/clk/clk-u300.c                          |  4 ++--
>   drivers/clk/clk-versaclock5.c                   | 12 ++++++------
>   drivers/clk/clk-vt8500.c                        |  9 +++++----
>   drivers/clk/clk-wm831x.c                        |  5 +++--
>   drivers/clk/clk-xgene.c                         |  9 +++++----
>   drivers/clk/h8300/clk-h8s2678.c                 |  4 ++--
>   drivers/clk/hisilicon/clk-hi6220-stub.c         |  5 +++--
>   drivers/clk/hisilicon/clkdivider-hi6220.c       |  5 +++--
>   drivers/clk/imx/clk-busy.c                      |  5 +++--
>   drivers/clk/imx/clk-cpu.c                       |  4 ++--
>   drivers/clk/imx/clk-fixup-div.c                 |  5 +++--
>   drivers/clk/imx/clk-pfd.c                       |  4 ++--
>   drivers/clk/imx/clk-pllv2.c                     |  4 ++--
>   drivers/clk/imx/clk-pllv3.c                     | 19 +++++++++++--------
>   drivers/clk/ingenic/cgu.c                       |  4 ++--
>   drivers/clk/ingenic/jz4780-cgu.c                |  5 +++--
>   drivers/clk/mediatek/clk-pll.c                  |  4 ++--
>   drivers/clk/meson/clk-audio-divider.c           |  6 +++---
>   drivers/clk/meson/clk-cpu.c                     |  5 +++--
>   drivers/clk/meson/clk-pll.c                     |  5 +++--
>   drivers/clk/meson/gxbb-aoclk-32k.c              |  5 +++--
>   drivers/clk/microchip/clk-core.c                | 12 ++++++------
>   drivers/clk/mmp/clk-frac.c                      |  5 +++--
>   drivers/clk/mvebu/clk-corediv.c                 |  5 +++--
>   drivers/clk/mvebu/clk-cpu.c                     |  5 +++--
>   drivers/clk/mvebu/dove-divider.c                |  4 ++--
>   drivers/clk/mxs/clk-div.c                       |  4 ++--
>   drivers/clk/mxs/clk-frac.c                      |  4 ++--
>   drivers/clk/mxs/clk-ref.c                       |  4 ++--
>   drivers/clk/nxp/clk-lpc18xx-cgu.c               |  5 +++--
>   drivers/clk/nxp/clk-lpc32xx.c                   | 15 +++++++++------
>   drivers/clk/pistachio/clk-pll.c                 |  4 ++--
>   drivers/clk/qcom/clk-alpha-pll.c                |  7 ++++---
>   drivers/clk/qcom/clk-regmap-divider.c           |  4 ++--
>   drivers/clk/qcom/clk-rpm.c                      |  4 ++--
>   drivers/clk/qcom/clk-smd-rpm.c                  |  5 +++--
>   drivers/clk/qcom/gcc-ipq4019.c                  |  5 +++--
>   drivers/clk/renesas/clk-div6.c                  |  5 +++--
>   drivers/clk/renesas/clk-rcar-gen2.c             |  4 ++--
>   drivers/clk/renesas/rcar-gen2-cpg.c             |  4 ++--
>   drivers/clk/renesas/rcar-gen3-cpg.c             |  5 +++--
>   drivers/clk/rockchip/clk-ddr.c                  |  6 +++---
>   drivers/clk/rockchip/clk-pll.c                  |  5 +++--
>   drivers/clk/samsung/clk-cpu.c                   |  5 +++--
>   drivers/clk/samsung/clk-pll.c                   |  5 +++--
>   drivers/clk/sirf/clk-atlas7.c                   |  4 ++--
>   drivers/clk/sirf/clk-common.c                   | 12 ++++++------
>   drivers/clk/spear/clk-aux-synth.c               |  4 ++--
>   drivers/clk/spear/clk-frac-synth.c              |  4 ++--
>   drivers/clk/spear/clk-gpt-synth.c               |  4 ++--
>   drivers/clk/spear/clk-vco-pll.c                 | 13 +++++++------
>   drivers/clk/spear/clk.c                         |  7 ++++---
>   drivers/clk/spear/clk.h                         |  7 ++++---
>   drivers/clk/st/clk-flexgen.c                    |  4 ++--
>   drivers/clk/st/clkgen-fsyn.c                    | 10 +++++-----
>   drivers/clk/st/clkgen-pll.c                     | 10 ++++++----
>   drivers/clk/sunxi-ng/ccu_nk.c                   |  4 ++--
>   drivers/clk/sunxi-ng/ccu_nkmp.c                 |  4 ++--
>   drivers/clk/sunxi-ng/ccu_nm.c                   |  4 ++--
>   drivers/clk/tegra/clk-audio-sync.c              |  5 +++--
>   drivers/clk/tegra/clk-bpmp.c                    |  5 +++--
>   drivers/clk/tegra/clk-divider.c                 |  5 +++--
>   drivers/clk/tegra/clk-periph.c                  |  5 +++--
>   drivers/clk/tegra/clk-pll.c                     | 13 +++++++------
>   drivers/clk/tegra/clk-super.c                   |  4 ++--
>   drivers/clk/ti/clk-dra7-atl.c                   |  4 ++--
>   drivers/clk/ti/composite.c                      |  5 +++--
>   drivers/clk/ti/divider.c                        |  5 +++--
>   drivers/clk/ti/fapll.c                          |  9 +++++----
>   drivers/clk/ux500/clk-prcmu.c                   |  4 ++--
>   drivers/clk/versatile/clk-icst.c                |  4 ++--
>   drivers/clk/versatile/clk-vexpress-osc.c        |  5 +++--
>   drivers/clk/zte/clk.c                           | 13 +++++++------
>   drivers/clk/zynq/pll.c                          |  4 ++--
>   drivers/gpu/drm/imx/imx-tve.c                   |  5 +++--
>   drivers/gpu/drm/mediatek/mtk_mipi_tx.c          |  5 +++--
>   drivers/gpu/drm/mediatek/mtk_mt8173_hdmi_phy.c  |  5 +++--
>   drivers/gpu/drm/msm/dsi/pll/dsi_pll.c           |  5 +++--
>   drivers/gpu/drm/msm/dsi/pll/dsi_pll.h           |  5 +++--
>   drivers/gpu/drm/msm/dsi/pll/dsi_pll_14nm.c      |  6 +++---
>   drivers/gpu/drm/msm/dsi/pll/dsi_pll_28nm_8960.c |  5 +++--
>   drivers/gpu/drm/msm/hdmi/hdmi_phy_8996.c        |  6 +++---
>   drivers/gpu/drm/msm/hdmi/hdmi_pll_8960.c        |  4 ++--
>   drivers/gpu/drm/msm/mdp/mdp4/mdp4_lvds_pll.c    |  5 +++--
>   drivers/gpu/drm/pl111/pl111_display.c           |  5 +++--
>   drivers/gpu/drm/sun4i/sun4i_dotclock.c          |  5 +++--
>   drivers/media/platform/omap3isp/isp.c           |  4 ++--
>   drivers/rtc/rtc-ac100.c                         |  5 +++--
>   drivers/rtc/rtc-ds1307.c                        |  5 +++--
>   drivers/rtc/rtc-hym8563.c                       |  5 +++--
>   drivers/rtc/rtc-m41t80.c                        |  5 +++--
>   drivers/rtc/rtc-pcf8563.c                       |  5 +++--
>   include/linux/clk-provider.h                    |  4 ++--
>   126 files changed, 417 insertions(+), 330 deletions(-)
> 
> diff --git a/arch/arm/mach-omap2/clkt2xxx_virt_prcm_set.c b/arch/arm/mach-omap2/clkt2xxx_virt_prcm_set.c
> index b64d717..e024600 100644
> --- a/arch/arm/mach-omap2/clkt2xxx_virt_prcm_set.c
> +++ b/arch/arm/mach-omap2/clkt2xxx_virt_prcm_set.c
> @@ -71,8 +71,8 @@ unsigned long omap2_table_mpu_recalc(struct clk_hw *clk,
>    * Some might argue L3-DDR, others ARM, others IVA. This code is simple and
>    * just uses the ARM rates.
>    */
> -long omap2_round_to_table_rate(struct clk_hw *hw, unsigned long rate,
> -			       unsigned long *parent_rate)
> +unsigned long omap2_round_to_table_rate(struct clk_hw *hw, unsigned long rate,
> +					unsigned long *parent_rate)
>   {
>   	const struct prcm_config *ptr;
>   	long highest_rate;
> diff --git a/arch/arm/mach-omap2/clock2xxx.h b/arch/arm/mach-omap2/clock2xxx.h
> index a8408f9..a9b73bd 100644
> --- a/arch/arm/mach-omap2/clock2xxx.h
> +++ b/arch/arm/mach-omap2/clock2xxx.h
> @@ -16,8 +16,8 @@ unsigned long omap2_table_mpu_recalc(struct clk_hw *clk,
>   				     unsigned long parent_rate);
>   int omap2_select_table_rate(struct clk_hw *hw, unsigned long rate,
>   			    unsigned long parent_rate);
> -long omap2_round_to_table_rate(struct clk_hw *hw, unsigned long rate,
> -			       unsigned long *parent_rate);
> +unsigned long omap2_round_to_table_rate(struct clk_hw *hw, unsigned long rate,
> +					unsigned long *parent_rate);
>   unsigned long omap2xxx_sys_clk_recalc(struct clk_hw *clk,
>   				      unsigned long parent_rate);
>   unsigned long omap2_osc_clk_recalc(struct clk_hw *clk,
> diff --git a/arch/arm/mach-vexpress/spc.c b/arch/arm/mach-vexpress/spc.c
> index 21c0642..2d9a5a6 100644
> --- a/arch/arm/mach-vexpress/spc.c
> +++ b/arch/arm/mach-vexpress/spc.c
> @@ -505,8 +505,8 @@ static unsigned long spc_recalc_rate(struct clk_hw *hw,
>   	return freq * 1000;
>   }
>   
> -static long spc_round_rate(struct clk_hw *hw, unsigned long drate,
> -		unsigned long *parent_rate)
> +static unsigned long spc_round_rate(struct clk_hw *hw, unsigned long drate,
> +				    unsigned long *parent_rate)
>   {
>   	struct clk_spc *spc = to_clk_spc(hw);
>   
> diff --git a/arch/mips/alchemy/common/clock.c b/arch/mips/alchemy/common/clock.c
> index 6b6f685..8281e7d 100644
> --- a/arch/mips/alchemy/common/clock.c
> +++ b/arch/mips/alchemy/common/clock.c
> @@ -204,7 +204,7 @@ static int alchemy_clk_aux_setr(struct clk_hw *hw,
>   	return 0;
>   }
>   
> -static long alchemy_clk_aux_roundr(struct clk_hw *hw,
> +static unsigned long alchemy_clk_aux_roundr(struct clk_hw *hw,
>   					    unsigned long rate,
>   					    unsigned long *parent_rate)
>   {
> diff --git a/drivers/clk/at91/clk-audio-pll.c b/drivers/clk/at91/clk-audio-pll.c
> index da7bafc..56227cb 100644
> --- a/drivers/clk/at91/clk-audio-pll.c
> +++ b/drivers/clk/at91/clk-audio-pll.c
> @@ -273,8 +273,9 @@ static int clk_audio_pll_frac_determine_rate(struct clk_hw *hw,
>   	return 0;
>   }
>   
> -static long clk_audio_pll_pad_round_rate(struct clk_hw *hw, unsigned long rate,
> -					 unsigned long *parent_rate)
> +static unsigned long clk_audio_pll_pad_round_rate(struct clk_hw *hw,
> +						  unsigned long rate,
> +						  unsigned long *parent_rate)
>   {
>   	struct clk_hw *pclk = clk_hw_get_parent(hw);
>   	long best_rate = -EINVAL;
> @@ -324,8 +325,9 @@ static long clk_audio_pll_pad_round_rate(struct clk_hw *hw, unsigned long rate,
>   	return best_rate;
>   }
>   
> -static long clk_audio_pll_pmc_round_rate(struct clk_hw *hw, unsigned long rate,
> -					 unsigned long *parent_rate)
> +static unsigned long clk_audio_pll_pmc_round_rate(struct clk_hw *hw,
> +						  unsigned long rate,
> +						  unsigned long *parent_rate)
>   {
>   	struct clk_hw *pclk = clk_hw_get_parent(hw);
>   	long best_rate = -EINVAL;
> diff --git a/drivers/clk/at91/clk-h32mx.c b/drivers/clk/at91/clk-h32mx.c
> index e0daa4a..e74b551 100644
> --- a/drivers/clk/at91/clk-h32mx.c
> +++ b/drivers/clk/at91/clk-h32mx.c
> @@ -45,8 +45,9 @@ static unsigned long clk_sama5d4_h32mx_recalc_rate(struct clk_hw *hw,
>   	return parent_rate;
>   }
>   
> -static long clk_sama5d4_h32mx_round_rate(struct clk_hw *hw, unsigned long rate,
> -				       unsigned long *parent_rate)
> +static unsigned long clk_sama5d4_h32mx_round_rate(struct clk_hw *hw,
> +						  unsigned long rate,
> +						  unsigned long *parent_rate)
>   {
>   	unsigned long div;
>   
> diff --git a/drivers/clk/at91/clk-peripheral.c b/drivers/clk/at91/clk-peripheral.c
> index 7701183..c7b45f9 100644
> --- a/drivers/clk/at91/clk-peripheral.c
> +++ b/drivers/clk/at91/clk-peripheral.c
> @@ -249,9 +249,9 @@ clk_sam9x5_peripheral_recalc_rate(struct clk_hw *hw,
>   	return parent_rate >> periph->div;
>   }
>   
> -static long clk_sam9x5_peripheral_round_rate(struct clk_hw *hw,
> -					     unsigned long rate,
> -					     unsigned long *parent_rate)
> +static unsigned long clk_sam9x5_peripheral_round_rate(struct clk_hw *hw,
> +						      unsigned long rate,
> +						      unsigned long *parent_rate)
>   {
>   	int shift = 0;
>   	unsigned long best_rate;
> diff --git a/drivers/clk/at91/clk-pll.c b/drivers/clk/at91/clk-pll.c
> index 7d3223f..4e7da3e 100644
> --- a/drivers/clk/at91/clk-pll.c
> +++ b/drivers/clk/at91/clk-pll.c
> @@ -257,7 +257,7 @@ static long clk_pll_get_best_div_mul(struct clk_pll *pll, unsigned long rate,
>   	return bestrate;
>   }
>   
> -static long clk_pll_round_rate(struct clk_hw *hw, unsigned long rate,
> +static unsigned long clk_pll_round_rate(struct clk_hw *hw, unsigned long rate,
>   					unsigned long *parent_rate)
>   {
>   	struct clk_pll *pll = to_clk_pll(hw);
> diff --git a/drivers/clk/at91/clk-plldiv.c b/drivers/clk/at91/clk-plldiv.c
> index b4afaf2..25ccfc6 100644
> --- a/drivers/clk/at91/clk-plldiv.c
> +++ b/drivers/clk/at91/clk-plldiv.c
> @@ -38,8 +38,9 @@ static unsigned long clk_plldiv_recalc_rate(struct clk_hw *hw,
>   	return parent_rate;
>   }
>   
> -static long clk_plldiv_round_rate(struct clk_hw *hw, unsigned long rate,
> -					unsigned long *parent_rate)
> +static unsigned long clk_plldiv_round_rate(struct clk_hw *hw,
> +					   unsigned long rate,
> +					   unsigned long *parent_rate)
>   {
>   	unsigned long div;
>   
> diff --git a/drivers/clk/at91/clk-smd.c b/drivers/clk/at91/clk-smd.c
> index 965c662..d096a37 100644
> --- a/drivers/clk/at91/clk-smd.c
> +++ b/drivers/clk/at91/clk-smd.c
> @@ -43,8 +43,9 @@ static unsigned long at91sam9x5_clk_smd_recalc_rate(struct clk_hw *hw,
>   	return parent_rate / (smddiv + 1);
>   }
>   
> -static long at91sam9x5_clk_smd_round_rate(struct clk_hw *hw, unsigned long rate,
> -					  unsigned long *parent_rate)
> +static unsigned long at91sam9x5_clk_smd_round_rate(struct clk_hw *hw,
> +						   unsigned long rate,
> +						   unsigned long *parent_rate)
>   {
>   	unsigned long div;
>   	unsigned long bestrate;
> diff --git a/drivers/clk/at91/clk-usb.c b/drivers/clk/at91/clk-usb.c
> index 791770a..e737d6e 100644
> --- a/drivers/clk/at91/clk-usb.c
> +++ b/drivers/clk/at91/clk-usb.c
> @@ -273,8 +273,9 @@ static unsigned long at91rm9200_clk_usb_recalc_rate(struct clk_hw *hw,
>   	return 0;
>   }
>   
> -static long at91rm9200_clk_usb_round_rate(struct clk_hw *hw, unsigned long rate,
> -					  unsigned long *parent_rate)
> +static unsigned long at91rm9200_clk_usb_round_rate(struct clk_hw *hw,
> +						   unsigned long rate,
> +						   unsigned long *parent_rate)
>   {
>   	struct at91rm9200_clk_usb *usb = to_at91rm9200_clk_usb(hw);
>   	struct clk_hw *parent = clk_hw_get_parent(hw);
> diff --git a/drivers/clk/axs10x/i2s_pll_clock.c b/drivers/clk/axs10x/i2s_pll_clock.c
> index 02d3bcd..061260c 100644
> --- a/drivers/clk/axs10x/i2s_pll_clock.c
> +++ b/drivers/clk/axs10x/i2s_pll_clock.c
> @@ -110,8 +110,8 @@ static unsigned long i2s_pll_recalc_rate(struct clk_hw *hw,
>   	return ((parent_rate / idiv) * fbdiv) / odiv;
>   }
>   
> -static long i2s_pll_round_rate(struct clk_hw *hw, unsigned long rate,
> -			unsigned long *prate)
> +static unsigned long i2s_pll_round_rate(struct clk_hw *hw, unsigned long rate,
> +					unsigned long *prate)
>   {
>   	struct i2s_pll_clk *clk = to_i2s_pll_clk(hw);
>   	const struct i2s_pll_cfg *pll_cfg = i2s_pll_get_cfg(*prate);
> diff --git a/drivers/clk/axs10x/pll_clock.c b/drivers/clk/axs10x/pll_clock.c
> index 25d8c24..27498eb 100644
> --- a/drivers/clk/axs10x/pll_clock.c
> +++ b/drivers/clk/axs10x/pll_clock.c
> @@ -152,8 +152,9 @@ static unsigned long axs10x_pll_recalc_rate(struct clk_hw *hw,
>   	return rate;
>   }
>   
> -static long axs10x_pll_round_rate(struct clk_hw *hw, unsigned long rate,
> -				  unsigned long *prate)
> +static unsigned long axs10x_pll_round_rate(struct clk_hw *hw,
> +					   unsigned long rate,
> +					   unsigned long *prate)
>   {
>   	int i;
>   	long best_rate;
> diff --git a/drivers/clk/bcm/clk-bcm2835.c b/drivers/clk/bcm/clk-bcm2835.c
> index 44301a3..c215dc9 100644
> --- a/drivers/clk/bcm/clk-bcm2835.c
> +++ b/drivers/clk/bcm/clk-bcm2835.c
> @@ -554,8 +554,9 @@ static long bcm2835_pll_rate_from_divisors(unsigned long parent_rate,
>   	return rate >> A2W_PLL_FRAC_BITS;
>   }
>   
> -static long bcm2835_pll_round_rate(struct clk_hw *hw, unsigned long rate,
> -				   unsigned long *parent_rate)
> +static unsigned long bcm2835_pll_round_rate(struct clk_hw *hw,
> +					    unsigned long rate,
> +					    unsigned long *parent_rate)
>   {
>   	struct bcm2835_pll *pll = container_of(hw, struct bcm2835_pll, hw);
>   	const struct bcm2835_pll_data *data = pll->data;
> @@ -785,9 +786,9 @@ static int bcm2835_pll_divider_is_on(struct clk_hw *hw)
>   	return !(cprman_read(cprman, data->a2w_reg) & A2W_PLL_CHANNEL_DISABLE);
>   }
>   
> -static long bcm2835_pll_divider_round_rate(struct clk_hw *hw,
> -					   unsigned long rate,
> -					   unsigned long *parent_rate)
> +static unsigned long bcm2835_pll_divider_round_rate(struct clk_hw *hw,
> +						    unsigned long rate,
> +						    unsigned long *parent_rate)
>   {
>   	return clk_divider_ops.round_rate(hw, rate, parent_rate);
>   }
> diff --git a/drivers/clk/bcm/clk-iproc-asiu.c b/drivers/clk/bcm/clk-iproc-asiu.c
> index 4360e48..ae40d08 100644
> --- a/drivers/clk/bcm/clk-iproc-asiu.c
> +++ b/drivers/clk/bcm/clk-iproc-asiu.c
> @@ -108,8 +108,9 @@ static unsigned long iproc_asiu_clk_recalc_rate(struct clk_hw *hw,
>   	return clk->rate;
>   }
>   
> -static long iproc_asiu_clk_round_rate(struct clk_hw *hw, unsigned long rate,
> -				      unsigned long *parent_rate)
> +static unsigned long iproc_asiu_clk_round_rate(struct clk_hw *hw,
> +					       unsigned long rate,
> +					       unsigned long *parent_rate)
>   {
>   	unsigned int div;
>   
> diff --git a/drivers/clk/bcm/clk-iproc-pll.c b/drivers/clk/bcm/clk-iproc-pll.c
> index 375d8dd..b5399b2 100644
> --- a/drivers/clk/bcm/clk-iproc-pll.c
> +++ b/drivers/clk/bcm/clk-iproc-pll.c
> @@ -431,8 +431,8 @@ static unsigned long iproc_pll_recalc_rate(struct clk_hw *hw,
>   	return clk->rate;
>   }
>   
> -static long iproc_pll_round_rate(struct clk_hw *hw, unsigned long rate,
> -				 unsigned long *parent_rate)
> +static unsigned long iproc_pll_round_rate(struct clk_hw *hw, unsigned long rate,
> +					  unsigned long *parent_rate)
>   {
>   	unsigned i;
>   	struct iproc_clk *clk = to_iproc_clk(hw);
> @@ -535,8 +535,8 @@ static unsigned long iproc_clk_recalc_rate(struct clk_hw *hw,
>   	return clk->rate;
>   }
>   
> -static long iproc_clk_round_rate(struct clk_hw *hw, unsigned long rate,
> -		unsigned long *parent_rate)
> +static unsigned long iproc_clk_round_rate(struct clk_hw *hw, unsigned long rate,
> +					  unsigned long *parent_rate)
>   {
>   	unsigned int div;
>   
> diff --git a/drivers/clk/clk-axi-clkgen.c b/drivers/clk/clk-axi-clkgen.c
> index 5e918e7..1da2ba4 100644
> --- a/drivers/clk/clk-axi-clkgen.c
> +++ b/drivers/clk/clk-axi-clkgen.c
> @@ -294,8 +294,9 @@ static int axi_clkgen_set_rate(struct clk_hw *clk_hw,
>   	return 0;
>   }
>   
> -static long axi_clkgen_round_rate(struct clk_hw *hw, unsigned long rate,
> -	unsigned long *parent_rate)
> +static unsigned long axi_clkgen_round_rate(struct clk_hw *hw,
> +					   unsigned long rate,
> +					   unsigned long *parent_rate)
>   {
>   	unsigned int d, m, dout;
>   
> diff --git a/drivers/clk/clk-cdce706.c b/drivers/clk/clk-cdce706.c
> index f21d909..998ad47 100644
> --- a/drivers/clk/clk-cdce706.c
> +++ b/drivers/clk/clk-cdce706.c
> @@ -185,8 +185,9 @@ static unsigned long cdce706_pll_recalc_rate(struct clk_hw *hw,
>   	return 0;
>   }
>   
> -static long cdce706_pll_round_rate(struct clk_hw *hw, unsigned long rate,
> -				   unsigned long *parent_rate)
> +static unsigned long cdce706_pll_round_rate(struct clk_hw *hw,
> +					    unsigned long rate,
> +					    unsigned long *parent_rate)
>   {
>   	struct cdce706_hw_data *hwd = to_hw_data(hw);
>   	unsigned long mul, div;
> @@ -290,8 +291,9 @@ static unsigned long cdce706_divider_recalc_rate(struct clk_hw *hw,
>   	return 0;
>   }
>   
> -static long cdce706_divider_round_rate(struct clk_hw *hw, unsigned long rate,
> -				       unsigned long *parent_rate)
> +static unsigned long cdce706_divider_round_rate(struct clk_hw *hw,
> +						unsigned long rate,
> +						unsigned long *parent_rate)
>   {
>   	struct cdce706_hw_data *hwd = to_hw_data(hw);
>   	struct cdce706_dev_data *cdce = hwd->dev_data;
> @@ -423,8 +425,9 @@ static unsigned long cdce706_clkout_recalc_rate(struct clk_hw *hw,
>   	return parent_rate;
>   }
>   
> -static long cdce706_clkout_round_rate(struct clk_hw *hw, unsigned long rate,
> -				      unsigned long *parent_rate)
> +static unsigned long cdce706_clkout_round_rate(struct clk_hw *hw,
> +					       unsigned long rate,
> +					       unsigned long *parent_rate)
>   {
>   	*parent_rate = rate;
>   	return rate;
> diff --git a/drivers/clk/clk-cdce925.c b/drivers/clk/clk-cdce925.c
> index 0a7e7d5..341e744 100644
> --- a/drivers/clk/clk-cdce925.c
> +++ b/drivers/clk/clk-cdce925.c
> @@ -142,8 +142,9 @@ static void cdce925_pll_find_rate(unsigned long rate,
>   	}
>   }
>   
> -static long cdce925_pll_round_rate(struct clk_hw *hw, unsigned long rate,
> -		unsigned long *parent_rate)
> +static unsigned long cdce925_pll_round_rate(struct clk_hw *hw,
> +					    unsigned long rate,
> +					    unsigned long *parent_rate)
>   {
>   	u16 n, m;
>   
> @@ -434,8 +435,9 @@ static unsigned long cdce925_clk_best_parent_rate(
>   	return rate * pdiv_best;
>   }
>   
> -static long cdce925_clk_round_rate(struct clk_hw *hw, unsigned long rate,
> -		unsigned long *parent_rate)
> +static unsigned long cdce925_clk_round_rate(struct clk_hw *hw,
> +					    unsigned long rate,
> +					    unsigned long *parent_rate)
>   {
>   	unsigned long l_parent_rate = *parent_rate;
>   	u16 divider = cdce925_calc_divider(rate, l_parent_rate);
> @@ -487,8 +489,9 @@ static u16 cdce925_y1_calc_divider(unsigned long rate,
>   	return (u16)divider;
>   }
>   
> -static long cdce925_clk_y1_round_rate(struct clk_hw *hw, unsigned long rate,
> -		unsigned long *parent_rate)
> +static unsigned long cdce925_clk_y1_round_rate(struct clk_hw *hw,
> +					       unsigned long rate,
> +					       unsigned long *parent_rate)
>   {
>   	unsigned long l_parent_rate = *parent_rate;
>   	u16 divider = cdce925_y1_calc_divider(rate, l_parent_rate);
> diff --git a/drivers/clk/clk-composite.c b/drivers/clk/clk-composite.c
> index 00269de..f3707c3 100644
> --- a/drivers/clk/clk-composite.c
> +++ b/drivers/clk/clk-composite.c
> @@ -127,8 +127,9 @@ static int clk_composite_determine_rate(struct clk_hw *hw,
>   	}
>   }
>   
> -static long clk_composite_round_rate(struct clk_hw *hw, unsigned long rate,
> -				  unsigned long *prate)
> +static unsigned long clk_composite_round_rate(struct clk_hw *hw,
> +					      unsigned long rate,
> +					      unsigned long *prate)
>   {
>   	struct clk_composite *composite = to_clk_composite(hw);
>   	const struct clk_ops *rate_ops = composite->rate_ops;
> diff --git a/drivers/clk/clk-cs2000-cp.c b/drivers/clk/clk-cs2000-cp.c
> index e8ea81c..d64178b 100644
> --- a/drivers/clk/clk-cs2000-cp.c
> +++ b/drivers/clk/clk-cs2000-cp.c
> @@ -300,8 +300,8 @@ static unsigned long cs2000_recalc_rate(struct clk_hw *hw,
>   	return cs2000_ratio_to_rate(ratio, parent_rate);
>   }
>   
> -static long cs2000_round_rate(struct clk_hw *hw, unsigned long rate,
> -			      unsigned long *parent_rate)
> +static unsigned long cs2000_round_rate(struct clk_hw *hw, unsigned long rate,
> +				       unsigned long *parent_rate)
>   {
>   	u32 ratio;
>   
> diff --git a/drivers/clk/clk-divider.c b/drivers/clk/clk-divider.c
> index 4ed516c..a26ec7c 100644
> --- a/drivers/clk/clk-divider.c
> +++ b/drivers/clk/clk-divider.c
> @@ -345,8 +345,9 @@ long divider_round_rate_parent(struct clk_hw *hw, struct clk_hw *parent,
>   }
>   EXPORT_SYMBOL_GPL(divider_round_rate_parent);
>   
> -static long clk_divider_round_rate(struct clk_hw *hw, unsigned long rate,
> -				unsigned long *prate)
> +static unsigned long clk_divider_round_rate(struct clk_hw *hw,
> +					    unsigned long rate,
> +					    unsigned long *prate)
>   {
>   	struct clk_divider *divider = to_clk_divider(hw);
>   	int bestdiv;
> diff --git a/drivers/clk/clk-fixed-factor.c b/drivers/clk/clk-fixed-factor.c
> index a5d402d..40d32af 100644
> --- a/drivers/clk/clk-fixed-factor.c
> +++ b/drivers/clk/clk-fixed-factor.c
> @@ -35,8 +35,9 @@ static unsigned long clk_factor_recalc_rate(struct clk_hw *hw,
>   	return (unsigned long)rate;
>   }
>   
> -static long clk_factor_round_rate(struct clk_hw *hw, unsigned long rate,
> -				unsigned long *prate)
> +static unsigned long clk_factor_round_rate(struct clk_hw *hw,
> +					   unsigned long rate,
> +					   unsigned long *prate)
>   {
>   	struct clk_fixed_factor *fix = to_clk_fixed_factor(hw);
>   
> diff --git a/drivers/clk/clk-fractional-divider.c b/drivers/clk/clk-fractional-divider.c
> index fdf625f..b7eb6a9 100644
> --- a/drivers/clk/clk-fractional-divider.c
> +++ b/drivers/clk/clk-fractional-divider.c
> @@ -70,8 +70,8 @@ static void clk_fd_general_approximation(struct clk_hw *hw, unsigned long rate,
>   			m, n);
>   }
>   
> -static long clk_fd_round_rate(struct clk_hw *hw, unsigned long rate,
> -			      unsigned long *parent_rate)
> +static unsigned long clk_fd_round_rate(struct clk_hw *hw, unsigned long rate,
> +				       unsigned long *parent_rate)
>   {
>   	struct clk_fractional_divider *fd = to_clk_fd(hw);
>   	unsigned long m, n;
> diff --git a/drivers/clk/clk-gemini.c b/drivers/clk/clk-gemini.c
> index 5e66e6c..f385fc2 100644
> --- a/drivers/clk/clk-gemini.c
> +++ b/drivers/clk/clk-gemini.c
> @@ -128,8 +128,9 @@ static unsigned long gemini_pci_recalc_rate(struct clk_hw *hw,
>   	return 33000000;
>   }
>   
> -static long gemini_pci_round_rate(struct clk_hw *hw, unsigned long rate,
> -				  unsigned long *prate)
> +static unsigned long gemini_pci_round_rate(struct clk_hw *hw,
> +					   unsigned long rate,
> +					   unsigned long *prate)
>   {
>   	/* We support 33 and 66 MHz */
>   	if (rate < 48000000)
> diff --git a/drivers/clk/clk-highbank.c b/drivers/clk/clk-highbank.c
> index 727ed8e..add1423 100644
> --- a/drivers/clk/clk-highbank.c
> +++ b/drivers/clk/clk-highbank.c
> @@ -143,8 +143,9 @@ static void clk_pll_calc(unsigned long rate, unsigned long ref_freq,
>   	*pdivf = divf;
>   }
>   
> -static long clk_pll_round_rate(struct clk_hw *hwclk, unsigned long rate,
> -			       unsigned long *parent_rate)
> +static unsigned long clk_pll_round_rate(struct clk_hw *hwclk,
> +					unsigned long rate,
> +					unsigned long *parent_rate)
>   {
>   	u32 divq, divf;
>   	unsigned long ref_freq = *parent_rate;
> @@ -240,8 +241,9 @@ static unsigned long clk_periclk_recalc_rate(struct clk_hw *hwclk,
>   	return parent_rate / div;
>   }
>   
> -static long clk_periclk_round_rate(struct clk_hw *hwclk, unsigned long rate,
> -				   unsigned long *parent_rate)
> +static unsigned long clk_periclk_round_rate(struct clk_hw *hwclk,
> +					    unsigned long rate,
> +					    unsigned long *parent_rate)
>   {
>   	u32 div;
>   
> diff --git a/drivers/clk/clk-hsdk-pll.c b/drivers/clk/clk-hsdk-pll.c
> index c4ee280..62c8e18 100644
> --- a/drivers/clk/clk-hsdk-pll.c
> +++ b/drivers/clk/clk-hsdk-pll.c
> @@ -192,8 +192,8 @@ static unsigned long hsdk_pll_recalc_rate(struct clk_hw *hw,
>   	return rate;
>   }
>   
> -static long hsdk_pll_round_rate(struct clk_hw *hw, unsigned long rate,
> -				unsigned long *prate)
> +static unsigned long hsdk_pll_round_rate(struct clk_hw *hw, unsigned long rate,
> +					 unsigned long *prate)
>   {
>   	int i;
>   	unsigned long best_rate;
> diff --git a/drivers/clk/clk-multiplier.c b/drivers/clk/clk-multiplier.c
> index dc037c9..b022707 100644
> --- a/drivers/clk/clk-multiplier.c
> +++ b/drivers/clk/clk-multiplier.c
> @@ -98,8 +98,9 @@ static unsigned long __bestmult(struct clk_hw *hw, unsigned long rate,
>   	return bestmult;
>   }
>   
> -static long clk_multiplier_round_rate(struct clk_hw *hw, unsigned long rate,
> -				  unsigned long *parent_rate)
> +static unsigned long clk_multiplier_round_rate(struct clk_hw *hw,
> +					       unsigned long rate,
> +					       unsigned long *parent_rate)
>   {
>   	struct clk_multiplier *mult = to_clk_multiplier(hw);
>   	unsigned long factor = __bestmult(hw, rate, parent_rate,
> diff --git a/drivers/clk/clk-scpi.c b/drivers/clk/clk-scpi.c
> index 2585472..303dc5e 100644
> --- a/drivers/clk/clk-scpi.c
> +++ b/drivers/clk/clk-scpi.c
> @@ -44,8 +44,8 @@ static unsigned long scpi_clk_recalc_rate(struct clk_hw *hw,
>   	return clk->scpi_ops->clk_get_val(clk->id);
>   }
>   
> -static long scpi_clk_round_rate(struct clk_hw *hw, unsigned long rate,
> -				unsigned long *parent_rate)
> +static unsigned long scpi_clk_round_rate(struct clk_hw *hw, unsigned long rate,
> +					 unsigned long *parent_rate)
>   {
>   	/*
>   	 * We can't figure out what rate it will be, so just return the
> @@ -104,8 +104,8 @@ static unsigned long scpi_dvfs_recalc_rate(struct clk_hw *hw,
>   	return opp->freq;
>   }
>   
> -static long scpi_dvfs_round_rate(struct clk_hw *hw, unsigned long rate,
> -				 unsigned long *parent_rate)
> +static unsigned long scpi_dvfs_round_rate(struct clk_hw *hw, unsigned long rate,
> +					  unsigned long *parent_rate)
>   {
>   	struct scpi_clk *clk = to_scpi_clk(hw);
>   
> diff --git a/drivers/clk/clk-si514.c b/drivers/clk/clk-si514.c
> index 09b6718..8d940d0 100644
> --- a/drivers/clk/clk-si514.c
> +++ b/drivers/clk/clk-si514.c
> @@ -209,8 +209,8 @@ static unsigned long si514_recalc_rate(struct clk_hw *hw,
>   	return si514_calc_rate(&settings);
>   }
>   
> -static long si514_round_rate(struct clk_hw *hw, unsigned long rate,
> -		unsigned long *parent_rate)
> +static unsigned long si514_round_rate(struct clk_hw *hw, unsigned long rate,
> +				      unsigned long *parent_rate)
>   {
>   	struct clk_si514_muldiv settings;
>   	int err;
> diff --git a/drivers/clk/clk-si5351.c b/drivers/clk/clk-si5351.c
> index 20d9076..4a35acd 100644
> --- a/drivers/clk/clk-si5351.c
> +++ b/drivers/clk/clk-si5351.c
> @@ -446,8 +446,9 @@ static unsigned long si5351_pll_recalc_rate(struct clk_hw *hw,
>   	return (unsigned long)rate;
>   }
>   
> -static long si5351_pll_round_rate(struct clk_hw *hw, unsigned long rate,
> -				  unsigned long *parent_rate)
> +static unsigned long si5351_pll_round_rate(struct clk_hw *hw,
> +					   unsigned long rate,
> +					   unsigned long *parent_rate)
>   {
>   	struct si5351_hw_data *hwdata =
>   		container_of(hw, struct si5351_hw_data, hw);
> @@ -644,8 +645,9 @@ static unsigned long si5351_msynth_recalc_rate(struct clk_hw *hw,
>   	return (unsigned long)rate;
>   }
>   
> -static long si5351_msynth_round_rate(struct clk_hw *hw, unsigned long rate,
> -				     unsigned long *parent_rate)
> +static unsigned long si5351_msynth_round_rate(struct clk_hw *hw,
> +					      unsigned long rate,
> +					      unsigned long *parent_rate)
>   {
>   	struct si5351_hw_data *hwdata =
>   		container_of(hw, struct si5351_hw_data, hw);
> @@ -1000,8 +1002,9 @@ static unsigned long si5351_clkout_recalc_rate(struct clk_hw *hw,
>   	return parent_rate >> rdiv;
>   }
>   
> -static long si5351_clkout_round_rate(struct clk_hw *hw, unsigned long rate,
> -				     unsigned long *parent_rate)
> +static unsigned long si5351_clkout_round_rate(struct clk_hw *hw,
> +					      unsigned long rate,
> +					      unsigned long *parent_rate)
>   {
>   	struct si5351_hw_data *hwdata =
>   		container_of(hw, struct si5351_hw_data, hw);
> diff --git a/drivers/clk/clk-si570.c b/drivers/clk/clk-si570.c
> index 646af1d..597e5d1 100644
> --- a/drivers/clk/clk-si570.c
> +++ b/drivers/clk/clk-si570.c
> @@ -246,8 +246,8 @@ static unsigned long si570_recalc_rate(struct clk_hw *hw,
>   	return rate;
>   }
>   
> -static long si570_round_rate(struct clk_hw *hw, unsigned long rate,
> -		unsigned long *parent_rate)
> +static unsigned long si570_round_rate(struct clk_hw *hw, unsigned long rate,
> +				      unsigned long *parent_rate)
>   {
>   	int err;
>   	u64 rfreq;
> diff --git a/drivers/clk/clk-stm32f4.c b/drivers/clk/clk-stm32f4.c
> index 96c6b6b..19a7afa 100644
> --- a/drivers/clk/clk-stm32f4.c
> +++ b/drivers/clk/clk-stm32f4.c
> @@ -354,8 +354,9 @@ static unsigned long clk_apb_mul_recalc_rate(struct clk_hw *hw,
>   	return parent_rate;
>   }
>   
> -static long clk_apb_mul_round_rate(struct clk_hw *hw, unsigned long rate,
> -				   unsigned long *prate)
> +static unsigned long clk_apb_mul_round_rate(struct clk_hw *hw,
> +					    unsigned long rate,
> +					    unsigned long *prate)
>   {
>   	struct clk_apb_mul *am = to_clk_apb_mul(hw);
>   	unsigned long mult = 1;
> @@ -570,8 +571,9 @@ static unsigned long stm32f4_pll_recalc(struct clk_hw *hw,
>   	return parent_rate * n;
>   }
>   
> -static long stm32f4_pll_round_rate(struct clk_hw *hw, unsigned long rate,
> -		unsigned long *prate)
> +static unsigned long stm32f4_pll_round_rate(struct clk_hw *hw,
> +					    unsigned long rate,
> +					    unsigned long *prate)
>   {
>   	struct clk_gate *gate = to_clk_gate(hw);
>   	struct stm32f4_pll *pll = to_stm32f4_pll(gate);
> @@ -636,8 +638,9 @@ static unsigned long stm32f4_pll_div_recalc_rate(struct clk_hw *hw,
>   	return clk_divider_ops.recalc_rate(hw, parent_rate);
>   }
>   
> -static long stm32f4_pll_div_round_rate(struct clk_hw *hw, unsigned long rate,
> -				unsigned long *prate)
> +static unsigned long stm32f4_pll_div_round_rate(struct clk_hw *hw,
> +						unsigned long rate,
> +						unsigned long *prate)
>   {
>   	return clk_divider_ops.round_rate(hw, rate, prate);
>   }
> diff --git a/drivers/clk/clk-u300.c b/drivers/clk/clk-u300.c
> index 7b3e192..d988363 100644
> --- a/drivers/clk/clk-u300.c
> +++ b/drivers/clk/clk-u300.c
> @@ -629,7 +629,7 @@ syscon_clk_recalc_rate(struct clk_hw *hw,
>   	}
>   }
>   
> -static long
> +static unsigned long
>   syscon_clk_round_rate(struct clk_hw *hw, unsigned long rate,
>   		      unsigned long *prate)
>   {
> @@ -1039,7 +1039,7 @@ mclk_clk_recalc_rate(struct clk_hw *hw,
>   	return parent_rate;
>   }
>   
> -static long
> +static unsigned long
>   mclk_clk_round_rate(struct clk_hw *hw, unsigned long rate,
>   		    unsigned long *prate)
>   {
> diff --git a/drivers/clk/clk-versaclock5.c b/drivers/clk/clk-versaclock5.c
> index decffb3..2b8ea89 100644
> --- a/drivers/clk/clk-versaclock5.c
> +++ b/drivers/clk/clk-versaclock5.c
> @@ -344,8 +344,8 @@ static unsigned long vc5_pfd_recalc_rate(struct clk_hw *hw,
>   		return parent_rate / VC5_REF_DIVIDER_REF_DIV(div);
>   }
>   
> -static long vc5_pfd_round_rate(struct clk_hw *hw, unsigned long rate,
> -			       unsigned long *parent_rate)
> +static unsigned long vc5_pfd_round_rate(struct clk_hw *hw, unsigned long rate,
> +					unsigned long *parent_rate)
>   {
>   	unsigned long idiv;
>   
> @@ -422,8 +422,8 @@ static unsigned long vc5_pll_recalc_rate(struct clk_hw *hw,
>   	return (parent_rate * div_int) + ((parent_rate * div_frc) >> 24);
>   }
>   
> -static long vc5_pll_round_rate(struct clk_hw *hw, unsigned long rate,
> -			       unsigned long *parent_rate)
> +static unsigned long vc5_pll_round_rate(struct clk_hw *hw, unsigned long rate,
> +					unsigned long *parent_rate)
>   {
>   	struct vc5_hw_data *hwdata = container_of(hw, struct vc5_hw_data, hw);
>   	u32 div_int;
> @@ -500,8 +500,8 @@ static unsigned long vc5_fod_recalc_rate(struct clk_hw *hw,
>   	return div64_u64((u64)f_in << 24ULL, ((u64)div_int << 24ULL) + div_frc);
>   }
>   
> -static long vc5_fod_round_rate(struct clk_hw *hw, unsigned long rate,
> -			       unsigned long *parent_rate)
> +static unsigned long vc5_fod_round_rate(struct clk_hw *hw, unsigned long rate,
> +					unsigned long *parent_rate)
>   {
>   	struct vc5_hw_data *hwdata = container_of(hw, struct vc5_hw_data, hw);
>   	/* VCO frequency is divided by two before entering FOD */
> diff --git a/drivers/clk/clk-vt8500.c b/drivers/clk/clk-vt8500.c
> index 4161a6f..43c88f6 100644
> --- a/drivers/clk/clk-vt8500.c
> +++ b/drivers/clk/clk-vt8500.c
> @@ -137,8 +137,9 @@ static unsigned long vt8500_dclk_recalc_rate(struct clk_hw *hw,
>   	return parent_rate / div;
>   }
>   
> -static long vt8500_dclk_round_rate(struct clk_hw *hw, unsigned long rate,
> -				unsigned long *prate)
> +static unsigned long vt8500_dclk_round_rate(struct clk_hw *hw,
> +					    unsigned long rate,
> +					    unsigned long *prate)
>   {
>   	struct clk_device *cdev = to_clk_device(hw);
>   	u32 divisor;
> @@ -603,8 +604,8 @@ static int vtwm_pll_set_rate(struct clk_hw *hw, unsigned long rate,
>   	return 0;
>   }
>   
> -static long vtwm_pll_round_rate(struct clk_hw *hw, unsigned long rate,
> -				unsigned long *prate)
> +static unsigned long vtwm_pll_round_rate(struct clk_hw *hw, unsigned long rate,
> +					 unsigned long *prate)
>   {
>   	struct clk_pll *pll = to_clk_pll(hw);
>   	u32 filter, mul, div1, div2;
> diff --git a/drivers/clk/clk-wm831x.c b/drivers/clk/clk-wm831x.c
> index 1467695..be6f98b 100644
> --- a/drivers/clk/clk-wm831x.c
> +++ b/drivers/clk/clk-wm831x.c
> @@ -138,8 +138,9 @@ static unsigned long wm831x_fll_recalc_rate(struct clk_hw *hw,
>   	return 0;
>   }
>   
> -static long wm831x_fll_round_rate(struct clk_hw *hw, unsigned long rate,
> -				  unsigned long *unused)
> +static unsigned long wm831x_fll_round_rate(struct clk_hw *hw,
> +					   unsigned long rate,
> +					   unsigned long *unused)
>   {
>   	int best = 0;
>   	int i;
> diff --git a/drivers/clk/clk-xgene.c b/drivers/clk/clk-xgene.c
> index 531b030..7a93415 100644
> --- a/drivers/clk/clk-xgene.c
> +++ b/drivers/clk/clk-xgene.c
> @@ -286,8 +286,9 @@ static unsigned long xgene_clk_pmd_recalc_rate(struct clk_hw *hw,
>   	return ret;
>   }
>   
> -static long xgene_clk_pmd_round_rate(struct clk_hw *hw, unsigned long rate,
> -				     unsigned long *parent_rate)
> +static unsigned long xgene_clk_pmd_round_rate(struct clk_hw *hw,
> +					      unsigned long rate,
> +					      unsigned long *parent_rate)
>   {
>   	struct xgene_clk_pmd *fd = to_xgene_clk_pmd(hw);
>   	u64 ret, scale;
> @@ -609,8 +610,8 @@ static int xgene_clk_set_rate(struct clk_hw *hw, unsigned long rate,
>   	return parent_rate / divider_save;
>   }
>   
> -static long xgene_clk_round_rate(struct clk_hw *hw, unsigned long rate,
> -				unsigned long *prate)
> +static unsigned long xgene_clk_round_rate(struct clk_hw *hw, unsigned long rate,
> +					  unsigned long *prate)
>   {
>   	struct xgene_clk *pclk = to_xgene_clk(hw);
>   	unsigned long parent_rate = *prate;
> diff --git a/drivers/clk/h8300/clk-h8s2678.c b/drivers/clk/h8300/clk-h8s2678.c
> index fc24b0b..e531612 100644
> --- a/drivers/clk/h8300/clk-h8s2678.c
> +++ b/drivers/clk/h8300/clk-h8s2678.c
> @@ -33,8 +33,8 @@ static unsigned long pll_recalc_rate(struct clk_hw *hw,
>   	return parent_rate * mul;
>   }
>   
> -static long pll_round_rate(struct clk_hw *hw, unsigned long rate,
> -				unsigned long *prate)
> +static unsigned long pll_round_rate(struct clk_hw *hw, unsigned long rate,
> +				    unsigned long *prate)
>   {
>   	int i, m = -1;
>   	long offset[3];
> diff --git a/drivers/clk/hisilicon/clk-hi6220-stub.c b/drivers/clk/hisilicon/clk-hi6220-stub.c
> index 329a092..1a2d64d 100644
> --- a/drivers/clk/hisilicon/clk-hi6220-stub.c
> +++ b/drivers/clk/hisilicon/clk-hi6220-stub.c
> @@ -165,8 +165,9 @@ static int hi6220_stub_clk_set_rate(struct clk_hw *hw, unsigned long rate,
>   	return ret;
>   }
>   
> -static long hi6220_stub_clk_round_rate(struct clk_hw *hw, unsigned long rate,
> -		unsigned long *parent_rate)
> +static unsigned long hi6220_stub_clk_round_rate(struct clk_hw *hw,
> +						unsigned long rate,
> +						unsigned long *parent_rate)
>   {
>   	struct hi6220_stub_clk *stub_clk = to_stub_clk(hw);
>   	unsigned long new_rate = rate / 1000;  /* kHz */
> diff --git a/drivers/clk/hisilicon/clkdivider-hi6220.c b/drivers/clk/hisilicon/clkdivider-hi6220.c
> index a1c1f68..5d771e9 100644
> --- a/drivers/clk/hisilicon/clkdivider-hi6220.c
> +++ b/drivers/clk/hisilicon/clkdivider-hi6220.c
> @@ -59,8 +59,9 @@ static unsigned long hi6220_clkdiv_recalc_rate(struct clk_hw *hw,
>   				   CLK_DIVIDER_ROUND_CLOSEST);
>   }
>   
> -static long hi6220_clkdiv_round_rate(struct clk_hw *hw, unsigned long rate,
> -					unsigned long *prate)
> +static unsigned long hi6220_clkdiv_round_rate(struct clk_hw *hw,
> +					      unsigned long rate,
> +					      unsigned long *prate)
>   {
>   	struct hi6220_clk_divider *dclk = to_hi6220_clk_divider(hw);
>   
> diff --git a/drivers/clk/imx/clk-busy.c b/drivers/clk/imx/clk-busy.c
> index 6df3389..2ee1cd3 100644
> --- a/drivers/clk/imx/clk-busy.c
> +++ b/drivers/clk/imx/clk-busy.c
> @@ -51,8 +51,9 @@ static unsigned long clk_busy_divider_recalc_rate(struct clk_hw *hw,
>   	return busy->div_ops->recalc_rate(&busy->div.hw, parent_rate);
>   }
>   
> -static long clk_busy_divider_round_rate(struct clk_hw *hw, unsigned long rate,
> -					unsigned long *prate)
> +static unsigned long clk_busy_divider_round_rate(struct clk_hw *hw,
> +						 unsigned long rate,
> +						 unsigned long *prate)
>   {
>   	struct clk_busy_divider *busy = to_clk_busy_divider(hw);
>   
> diff --git a/drivers/clk/imx/clk-cpu.c b/drivers/clk/imx/clk-cpu.c
> index 9d46eac..02db30a 100644
> --- a/drivers/clk/imx/clk-cpu.c
> +++ b/drivers/clk/imx/clk-cpu.c
> @@ -35,8 +35,8 @@ static unsigned long clk_cpu_recalc_rate(struct clk_hw *hw,
>   	return clk_get_rate(cpu->div);
>   }
>   
> -static long clk_cpu_round_rate(struct clk_hw *hw, unsigned long rate,
> -			       unsigned long *prate)
> +static unsigned long clk_cpu_round_rate(struct clk_hw *hw, unsigned long rate,
> +					unsigned long *prate)
>   {
>   	struct clk_cpu *cpu = to_clk_cpu(hw);
>   
> diff --git a/drivers/clk/imx/clk-fixup-div.c b/drivers/clk/imx/clk-fixup-div.c
> index ce572273..d6c98de 100644
> --- a/drivers/clk/imx/clk-fixup-div.c
> +++ b/drivers/clk/imx/clk-fixup-div.c
> @@ -47,8 +47,9 @@ static unsigned long clk_fixup_div_recalc_rate(struct clk_hw *hw,
>   	return fixup_div->ops->recalc_rate(&fixup_div->divider.hw, parent_rate);
>   }
>   
> -static long clk_fixup_div_round_rate(struct clk_hw *hw, unsigned long rate,
> -			       unsigned long *prate)
> +static unsigned long clk_fixup_div_round_rate(struct clk_hw *hw,
> +					      unsigned long rate,
> +					      unsigned long *prate)
>   {
>   	struct clk_fixup_div *fixup_div = to_clk_fixup_div(hw);
>   
> diff --git a/drivers/clk/imx/clk-pfd.c b/drivers/clk/imx/clk-pfd.c
> index 04a3e78..4898469 100644
> --- a/drivers/clk/imx/clk-pfd.c
> +++ b/drivers/clk/imx/clk-pfd.c
> @@ -67,8 +67,8 @@ static unsigned long clk_pfd_recalc_rate(struct clk_hw *hw,
>   	return tmp;
>   }
>   
> -static long clk_pfd_round_rate(struct clk_hw *hw, unsigned long rate,
> -			       unsigned long *prate)
> +static unsigned long clk_pfd_round_rate(struct clk_hw *hw, unsigned long rate,
> +					unsigned long *prate)
>   {
>   	u64 tmp = *prate;
>   	u8 frac;
> diff --git a/drivers/clk/imx/clk-pllv2.c b/drivers/clk/imx/clk-pllv2.c
> index 85b5cbe..fe9c1fa 100644
> --- a/drivers/clk/imx/clk-pllv2.c
> +++ b/drivers/clk/imx/clk-pllv2.c
> @@ -178,8 +178,8 @@ static int clk_pllv2_set_rate(struct clk_hw *hw, unsigned long rate,
>   	return 0;
>   }
>   
> -static long clk_pllv2_round_rate(struct clk_hw *hw, unsigned long rate,
> -		unsigned long *prate)
> +static unsigned long clk_pllv2_round_rate(struct clk_hw *hw, unsigned long rate,
> +					  unsigned long *prate)
>   {
>   	u32 dp_op, dp_mfd, dp_mfn;
>   
> diff --git a/drivers/clk/imx/clk-pllv3.c b/drivers/clk/imx/clk-pllv3.c
> index 9af62ee..b2d8dc5 100644
> --- a/drivers/clk/imx/clk-pllv3.c
> +++ b/drivers/clk/imx/clk-pllv3.c
> @@ -121,8 +121,8 @@ static unsigned long clk_pllv3_recalc_rate(struct clk_hw *hw,
>   	return (div == 1) ? parent_rate * 22 : parent_rate * 20;
>   }
>   
> -static long clk_pllv3_round_rate(struct clk_hw *hw, unsigned long rate,
> -				 unsigned long *prate)
> +static unsigned long clk_pllv3_round_rate(struct clk_hw *hw, unsigned long rate,
> +					  unsigned long *prate)
>   {
>   	unsigned long parent_rate = *prate;
>   
> @@ -169,8 +169,9 @@ static unsigned long clk_pllv3_sys_recalc_rate(struct clk_hw *hw,
>   	return parent_rate * div / 2;
>   }
>   
> -static long clk_pllv3_sys_round_rate(struct clk_hw *hw, unsigned long rate,
> -				     unsigned long *prate)
> +static unsigned long clk_pllv3_sys_round_rate(struct clk_hw *hw,
> +					      unsigned long rate,
> +					      unsigned long *prate)
>   {
>   	unsigned long parent_rate = *prate;
>   	unsigned long min_rate = parent_rate * 54 / 2;
> @@ -230,8 +231,9 @@ static unsigned long clk_pllv3_av_recalc_rate(struct clk_hw *hw,
>   	return parent_rate * div + (unsigned long)temp64;
>   }
>   
> -static long clk_pllv3_av_round_rate(struct clk_hw *hw, unsigned long rate,
> -				    unsigned long *prate)
> +static unsigned long clk_pllv3_av_round_rate(struct clk_hw *hw,
> +					     unsigned long rate,
> +					     unsigned long *prate)
>   {
>   	unsigned long parent_rate = *prate;
>   	unsigned long min_rate = parent_rate * 27;
> @@ -359,8 +361,9 @@ static unsigned long clk_pllv3_vf610_recalc_rate(struct clk_hw *hw,
>   	return clk_pllv3_vf610_mf_to_rate(parent_rate, mf);
>   }
>   
> -static long clk_pllv3_vf610_round_rate(struct clk_hw *hw, unsigned long rate,
> -				    unsigned long *prate)
> +static unsigned long clk_pllv3_vf610_round_rate(struct clk_hw *hw,
> +						unsigned long rate,
> +						unsigned long *prate)
>   {
>   	struct clk_pllv3_vf610_mf mf = clk_pllv3_vf610_rate_to_mf(*prate, rate);
>   
> diff --git a/drivers/clk/ingenic/cgu.c b/drivers/clk/ingenic/cgu.c
> index ab39363..3dee806 100644
> --- a/drivers/clk/ingenic/cgu.c
> +++ b/drivers/clk/ingenic/cgu.c
> @@ -152,7 +152,7 @@ ingenic_pll_calc(const struct ingenic_cgu_clk_info *clk_info,
>   	return div_u64((u64)parent_rate * m, n * od);
>   }
>   
> -static long
> +static unsigned long
>   ingenic_pll_round_rate(struct clk_hw *hw, unsigned long req_rate,
>   		       unsigned long *prate)
>   {
> @@ -357,7 +357,7 @@ ingenic_clk_calc_div(const struct ingenic_cgu_clk_info *clk_info,
>   	return div;
>   }
>   
> -static long
> +static unsigned long
>   ingenic_clk_round_rate(struct clk_hw *hw, unsigned long req_rate,
>   		       unsigned long *parent_rate)
>   {
> diff --git a/drivers/clk/ingenic/jz4780-cgu.c b/drivers/clk/ingenic/jz4780-cgu.c
> index ac3585e..1f23173 100644
> --- a/drivers/clk/ingenic/jz4780-cgu.c
> +++ b/drivers/clk/ingenic/jz4780-cgu.c
> @@ -150,8 +150,9 @@ static unsigned long jz4780_otg_phy_recalc_rate(struct clk_hw *hw,
>   	return parent_rate;
>   }
>   
> -static long jz4780_otg_phy_round_rate(struct clk_hw *hw, unsigned long req_rate,
> -				      unsigned long *parent_rate)
> +static unsigned long jz4780_otg_phy_round_rate(struct clk_hw *hw,
> +					       unsigned long req_rate,
> +					       unsigned long *parent_rate)
>   {
>   	if (req_rate < 15600000)
>   		return 12000000;
> diff --git a/drivers/clk/mediatek/clk-pll.c b/drivers/clk/mediatek/clk-pll.c
> index f54e401..a068e55 100644
> --- a/drivers/clk/mediatek/clk-pll.c
> +++ b/drivers/clk/mediatek/clk-pll.c
> @@ -199,8 +199,8 @@ static unsigned long mtk_pll_recalc_rate(struct clk_hw *hw,
>   	return __mtk_pll_recalc_rate(pll, parent_rate, pcw, postdiv);
>   }
>   
> -static long mtk_pll_round_rate(struct clk_hw *hw, unsigned long rate,
> -		unsigned long *prate)
> +static unsigned long mtk_pll_round_rate(struct clk_hw *hw, unsigned long rate,
> +					unsigned long *prate)
>   {
>   	struct mtk_clk_pll *pll = to_mtk_clk_pll(hw);
>   	u32 pcw = 0;
> diff --git a/drivers/clk/meson/clk-audio-divider.c b/drivers/clk/meson/clk-audio-divider.c
> index 6c07db0..396a938 100644
> --- a/drivers/clk/meson/clk-audio-divider.c
> +++ b/drivers/clk/meson/clk-audio-divider.c
> @@ -73,9 +73,9 @@ static unsigned long audio_divider_recalc_rate(struct clk_hw *hw,
>   	return DIV_ROUND_UP_ULL((u64)parent_rate, divider);
>   }
>   
> -static long audio_divider_round_rate(struct clk_hw *hw,
> -				     unsigned long rate,
> -				     unsigned long *parent_rate)
> +static unsigned long audio_divider_round_rate(struct clk_hw *hw,
> +					      unsigned long rate,
> +					      unsigned long *parent_rate)
>   {
>   	struct meson_clk_audio_divider *adiv =
>   		to_meson_clk_audio_divider(hw);
> diff --git a/drivers/clk/meson/clk-cpu.c b/drivers/clk/meson/clk-cpu.c
> index f8b2b7e..83c36c6 100644
> --- a/drivers/clk/meson/clk-cpu.c
> +++ b/drivers/clk/meson/clk-cpu.c
> @@ -54,8 +54,9 @@
>   #define to_meson_clk_cpu_hw(_hw) container_of(_hw, struct meson_clk_cpu, hw)
>   #define to_meson_clk_cpu_nb(_nb) container_of(_nb, struct meson_clk_cpu, clk_nb)
>   
> -static long meson_clk_cpu_round_rate(struct clk_hw *hw, unsigned long rate,
> -				     unsigned long *prate)
> +static unsigned long meson_clk_cpu_round_rate(struct clk_hw *hw,
> +					      unsigned long rate,
> +					      unsigned long *prate)
>   {
>   	struct meson_clk_cpu *clk_cpu = to_meson_clk_cpu_hw(hw);
>   
> diff --git a/drivers/clk/meson/clk-pll.c b/drivers/clk/meson/clk-pll.c
> index 0134155..3d5b663 100644
> --- a/drivers/clk/meson/clk-pll.c
> +++ b/drivers/clk/meson/clk-pll.c
> @@ -87,8 +87,9 @@ static unsigned long meson_clk_pll_recalc_rate(struct clk_hw *hw,
>   	return rate_mhz * 1000000;
>   }
>   
> -static long meson_clk_pll_round_rate(struct clk_hw *hw, unsigned long rate,
> -				     unsigned long *parent_rate)
> +static unsigned long meson_clk_pll_round_rate(struct clk_hw *hw,
> +					      unsigned long rate,
> +					      unsigned long *parent_rate)
>   {
>   	struct meson_clk_pll *pll = to_meson_clk_pll(hw);
>   	const struct pll_rate_table *rate_table = pll->rate_table;
> diff --git a/drivers/clk/meson/gxbb-aoclk-32k.c b/drivers/clk/meson/gxbb-aoclk-32k.c
> index 491634d..0fd5b6c 100644
> --- a/drivers/clk/meson/gxbb-aoclk-32k.c
> +++ b/drivers/clk/meson/gxbb-aoclk-32k.c
> @@ -120,8 +120,9 @@ static const struct cec_32k_freq_table *find_cec_32k_freq(unsigned long rate,
>   	return NULL;
>   }
>   
> -static long aoclk_cec_32k_round_rate(struct clk_hw *hw, unsigned long rate,
> -				     unsigned long *prate)
> +static unsigned long aoclk_cec_32k_round_rate(struct clk_hw *hw,
> +					      unsigned long rate,
> +					      unsigned long *prate)
>   {
>   	const struct cec_32k_freq_table *freq = find_cec_32k_freq(rate,
>   								  *prate);
> diff --git a/drivers/clk/microchip/clk-core.c b/drivers/clk/microchip/clk-core.c
> index c3b3014..70665c8 100644
> --- a/drivers/clk/microchip/clk-core.c
> +++ b/drivers/clk/microchip/clk-core.c
> @@ -162,8 +162,8 @@ static unsigned long pbclk_recalc_rate(struct clk_hw *hw,
>   	return parent_rate / pbclk_read_pbdiv(pb);
>   }
>   
> -static long pbclk_round_rate(struct clk_hw *hw, unsigned long rate,
> -			     unsigned long *parent_rate)
> +static unsigned long pbclk_round_rate(struct clk_hw *hw, unsigned long rate,
> +				      unsigned long *parent_rate)
>   {
>   	return calc_best_divided_rate(rate, *parent_rate,
>   				      PB_DIV_MAX, PB_DIV_MIN);
> @@ -377,8 +377,8 @@ static unsigned long roclk_recalc_rate(struct clk_hw *hw,
>   	return roclk_calc_rate(parent_rate, rodiv, rotrim);
>   }
>   
> -static long roclk_round_rate(struct clk_hw *hw, unsigned long rate,
> -			     unsigned long *parent_rate)
> +static unsigned long roclk_round_rate(struct clk_hw *hw, unsigned long rate,
> +				      unsigned long *parent_rate)
>   {
>   	u32 rotrim, rodiv;
>   
> @@ -670,8 +670,8 @@ static unsigned long spll_clk_recalc_rate(struct clk_hw *hw,
>   	return rate64;
>   }
>   
> -static long spll_clk_round_rate(struct clk_hw *hw, unsigned long rate,
> -				unsigned long *parent_rate)
> +static unsigned long spll_clk_round_rate(struct clk_hw *hw, unsigned long rate,
> +					 unsigned long *parent_rate)
>   {
>   	struct pic32_sys_pll *pll = clkhw_to_spll(hw);
>   
> diff --git a/drivers/clk/mmp/clk-frac.c b/drivers/clk/mmp/clk-frac.c
> index cb43d54..af18643 100644
> --- a/drivers/clk/mmp/clk-frac.c
> +++ b/drivers/clk/mmp/clk-frac.c
> @@ -24,8 +24,9 @@
>   
>   #define to_clk_factor(hw) container_of(hw, struct mmp_clk_factor, hw)
>   
> -static long clk_factor_round_rate(struct clk_hw *hw, unsigned long drate,
> -		unsigned long *prate)
> +static unsigned long clk_factor_round_rate(struct clk_hw *hw,
> +					   unsigned long drate,
> +					   unsigned long *prate)
>   {
>   	struct mmp_clk_factor *factor = to_clk_factor(hw);
>   	unsigned long rate = 0, prev_rate;
> diff --git a/drivers/clk/mvebu/clk-corediv.c b/drivers/clk/mvebu/clk-corediv.c
> index 8491979..fa47909 100644
> --- a/drivers/clk/mvebu/clk-corediv.c
> +++ b/drivers/clk/mvebu/clk-corediv.c
> @@ -136,8 +136,9 @@ static unsigned long clk_corediv_recalc_rate(struct clk_hw *hwclk,
>   	return parent_rate / div;
>   }
>   
> -static long clk_corediv_round_rate(struct clk_hw *hwclk, unsigned long rate,
> -			       unsigned long *parent_rate)
> +static unsigned long clk_corediv_round_rate(struct clk_hw *hwclk,
> +					    unsigned long rate,
> +					    unsigned long *parent_rate)
>   {
>   	/* Valid ratio are 1:4, 1:5, 1:6 and 1:8 */
>   	u32 div;
> diff --git a/drivers/clk/mvebu/clk-cpu.c b/drivers/clk/mvebu/clk-cpu.c
> index 072aa38..2d9e7ab 100644
> --- a/drivers/clk/mvebu/clk-cpu.c
> +++ b/drivers/clk/mvebu/clk-cpu.c
> @@ -58,8 +58,9 @@ static unsigned long clk_cpu_recalc_rate(struct clk_hw *hwclk,
>   	return parent_rate / div;
>   }
>   
> -static long clk_cpu_round_rate(struct clk_hw *hwclk, unsigned long rate,
> -			       unsigned long *parent_rate)
> +static unsigned long clk_cpu_round_rate(struct clk_hw *hwclk,
> +					unsigned long rate,
> +					unsigned long *parent_rate)
>   {
>   	/* Valid ratio are 1:1, 1:2 and 1:3 */
>   	u32 div;
> diff --git a/drivers/clk/mvebu/dove-divider.c b/drivers/clk/mvebu/dove-divider.c
> index 7e35c89..234ba0a 100644
> --- a/drivers/clk/mvebu/dove-divider.c
> +++ b/drivers/clk/mvebu/dove-divider.c
> @@ -108,8 +108,8 @@ static unsigned long dove_recalc_rate(struct clk_hw *hw, unsigned long parent)
>   	return rate;
>   }
>   
> -static long dove_round_rate(struct clk_hw *hw, unsigned long rate,
> -			    unsigned long *parent)
> +static unsigned long dove_round_rate(struct clk_hw *hw, unsigned long rate,
> +				     unsigned long *parent)
>   {
>   	struct dove_clk *dc = to_dove_clk(hw);
>   	unsigned long parent_rate = *parent;
> diff --git a/drivers/clk/mxs/clk-div.c b/drivers/clk/mxs/clk-div.c
> index ccebd01..60a8cc8 100644
> --- a/drivers/clk/mxs/clk-div.c
> +++ b/drivers/clk/mxs/clk-div.c
> @@ -46,8 +46,8 @@ static unsigned long clk_div_recalc_rate(struct clk_hw *hw,
>   	return div->ops->recalc_rate(&div->divider.hw, parent_rate);
>   }
>   
> -static long clk_div_round_rate(struct clk_hw *hw, unsigned long rate,
> -			       unsigned long *prate)
> +static unsigned long clk_div_round_rate(struct clk_hw *hw, unsigned long rate,
> +					unsigned long *prate)
>   {
>   	struct clk_div *div = to_clk_div(hw);
>   
> diff --git a/drivers/clk/mxs/clk-frac.c b/drivers/clk/mxs/clk-frac.c
> index 27b3372..f57281f 100644
> --- a/drivers/clk/mxs/clk-frac.c
> +++ b/drivers/clk/mxs/clk-frac.c
> @@ -50,8 +50,8 @@ static unsigned long clk_frac_recalc_rate(struct clk_hw *hw,
>   	return tmp_rate >> frac->width;
>   }
>   
> -static long clk_frac_round_rate(struct clk_hw *hw, unsigned long rate,
> -				unsigned long *prate)
> +static unsigned long clk_frac_round_rate(struct clk_hw *hw, unsigned long rate,
> +					 unsigned long *prate)
>   {
>   	struct clk_frac *frac = to_clk_frac(hw);
>   	unsigned long parent_rate = *prate;
> diff --git a/drivers/clk/mxs/clk-ref.c b/drivers/clk/mxs/clk-ref.c
> index 495f99b..c3eb948 100644
> --- a/drivers/clk/mxs/clk-ref.c
> +++ b/drivers/clk/mxs/clk-ref.c
> @@ -63,8 +63,8 @@ static unsigned long clk_ref_recalc_rate(struct clk_hw *hw,
>   	return tmp;
>   }
>   
> -static long clk_ref_round_rate(struct clk_hw *hw, unsigned long rate,
> -			       unsigned long *prate)
> +static unsigned long clk_ref_round_rate(struct clk_hw *hw, unsigned long rate,
> +					unsigned long *prate)
>   {
>   	unsigned long parent_rate = *prate;
>   	u64 tmp = parent_rate;
> diff --git a/drivers/clk/nxp/clk-lpc18xx-cgu.c b/drivers/clk/nxp/clk-lpc18xx-cgu.c
> index 2531174..e08bad9 100644
> --- a/drivers/clk/nxp/clk-lpc18xx-cgu.c
> +++ b/drivers/clk/nxp/clk-lpc18xx-cgu.c
> @@ -373,8 +373,9 @@ static unsigned long lpc18xx_pll0_recalc_rate(struct clk_hw *hw,
>   	return 0;
>   }
>   
> -static long lpc18xx_pll0_round_rate(struct clk_hw *hw, unsigned long rate,
> -				    unsigned long *prate)
> +static unsigned long lpc18xx_pll0_round_rate(struct clk_hw *hw,
> +					     unsigned long rate,
> +					     unsigned long *prate)
>   {
>   	unsigned long m;
>   
> diff --git a/drivers/clk/nxp/clk-lpc32xx.c b/drivers/clk/nxp/clk-lpc32xx.c
> index 7b359af..81ab57d 100644
> --- a/drivers/clk/nxp/clk-lpc32xx.c
> +++ b/drivers/clk/nxp/clk-lpc32xx.c
> @@ -583,8 +583,9 @@ static int clk_pll_set_rate(struct clk_hw *hw, unsigned long rate,
>   	return regmap_update_bits(clk_regmap, clk->reg, 0x1FFFF, val);
>   }
>   
> -static long clk_hclk_pll_round_rate(struct clk_hw *hw, unsigned long rate,
> -				    unsigned long *parent_rate)
> +static unsigned long clk_hclk_pll_round_rate(struct clk_hw *hw,
> +					     unsigned long rate,
> +					     unsigned long *parent_rate)
>   {
>   	struct lpc32xx_pll_clk *clk = to_lpc32xx_pll_clk(hw);
>   	u64 m_i, o = rate, i = *parent_rate, d = (u64)rate << 6;
> @@ -646,8 +647,9 @@ static long clk_hclk_pll_round_rate(struct clk_hw *hw, unsigned long rate,
>   	return o;
>   }
>   
> -static long clk_usb_pll_round_rate(struct clk_hw *hw, unsigned long rate,
> -				   unsigned long *parent_rate)
> +static unsigned long clk_usb_pll_round_rate(struct clk_hw *hw,
> +					    unsigned long rate,
> +					    unsigned long *parent_rate)
>   {
>   	struct lpc32xx_pll_clk *clk = to_lpc32xx_pll_clk(hw);
>   	struct clk_hw *usb_div_hw, *osc_hw;
> @@ -959,8 +961,9 @@ static unsigned long clk_divider_recalc_rate(struct clk_hw *hw,
>   				   divider->flags);
>   }
>   
> -static long clk_divider_round_rate(struct clk_hw *hw, unsigned long rate,
> -				unsigned long *prate)
> +static unsigned long clk_divider_round_rate(struct clk_hw *hw,
> +					    unsigned long rate,
> +					    unsigned long *prate)
>   {
>   	struct lpc32xx_clk_div *divider = to_lpc32xx_div(hw);
>   	unsigned int bestdiv;
> diff --git a/drivers/clk/pistachio/clk-pll.c b/drivers/clk/pistachio/clk-pll.c
> index 7e8daab..05fadea 100644
> --- a/drivers/clk/pistachio/clk-pll.c
> +++ b/drivers/clk/pistachio/clk-pll.c
> @@ -142,8 +142,8 @@ pll_get_params(struct pistachio_clk_pll *pll, unsigned long fref,
>   	return NULL;
>   }
>   
> -static long pll_round_rate(struct clk_hw *hw, unsigned long rate,
> -			   unsigned long *parent_rate)
> +static unsigned long pll_round_rate(struct clk_hw *hw, unsigned long rate,
> +				    unsigned long *parent_rate)
>   {
>   	struct pistachio_clk_pll *pll = to_pistachio_pll(hw);
>   	unsigned int i;
> diff --git a/drivers/clk/qcom/clk-alpha-pll.c b/drivers/clk/qcom/clk-alpha-pll.c
> index 47a1da3..4ddf8b31 100644
> --- a/drivers/clk/qcom/clk-alpha-pll.c
> +++ b/drivers/clk/qcom/clk-alpha-pll.c
> @@ -411,8 +411,9 @@ static int clk_alpha_pll_set_rate(struct clk_hw *hw, unsigned long rate,
>   	return 0;
>   }
>   
> -static long clk_alpha_pll_round_rate(struct clk_hw *hw, unsigned long rate,
> -				     unsigned long *prate)
> +static unsigned long clk_alpha_pll_round_rate(struct clk_hw *hw,
> +					      unsigned long rate,
> +					      unsigned long *prate)
>   {
>   	struct clk_alpha_pll *pll = to_clk_alpha_pll(hw);
>   	u32 l;
> @@ -472,7 +473,7 @@ static const struct clk_div_table clk_alpha_div_table[] = {
>   	{ }
>   };
>   
> -static long
> +static unsigned long
>   clk_alpha_pll_postdiv_round_rate(struct clk_hw *hw, unsigned long rate,
>   				 unsigned long *prate)
>   {
> diff --git a/drivers/clk/qcom/clk-regmap-divider.c b/drivers/clk/qcom/clk-regmap-divider.c
> index 5348491..21bf297 100644
> --- a/drivers/clk/qcom/clk-regmap-divider.c
> +++ b/drivers/clk/qcom/clk-regmap-divider.c
> @@ -23,8 +23,8 @@ static inline struct clk_regmap_div *to_clk_regmap_div(struct clk_hw *hw)
>   	return container_of(to_clk_regmap(hw), struct clk_regmap_div, clkr);
>   }
>   
> -static long div_round_rate(struct clk_hw *hw, unsigned long rate,
> -			   unsigned long *prate)
> +static unsigned long div_round_rate(struct clk_hw *hw, unsigned long rate,
> +				    unsigned long *prate)
>   {
>   	struct clk_regmap_div *divider = to_clk_regmap_div(hw);
>   
> diff --git a/drivers/clk/qcom/clk-rpm.c b/drivers/clk/qcom/clk-rpm.c
> index c60f61b..62c7597 100644
> --- a/drivers/clk/qcom/clk-rpm.c
> +++ b/drivers/clk/qcom/clk-rpm.c
> @@ -354,8 +354,8 @@ static int clk_rpm_set_rate(struct clk_hw *hw,
>   	return ret;
>   }
>   
> -static long clk_rpm_round_rate(struct clk_hw *hw, unsigned long rate,
> -			       unsigned long *parent_rate)
> +static unsigned long clk_rpm_round_rate(struct clk_hw *hw, unsigned long rate,
> +					unsigned long *parent_rate)
>   {
>   	/*
>   	 * RPM handles rate rounding and we don't have a way to
> diff --git a/drivers/clk/qcom/clk-smd-rpm.c b/drivers/clk/qcom/clk-smd-rpm.c
> index c26d900..0ce935b 100644
> --- a/drivers/clk/qcom/clk-smd-rpm.c
> +++ b/drivers/clk/qcom/clk-smd-rpm.c
> @@ -348,8 +348,9 @@ static int clk_smd_rpm_set_rate(struct clk_hw *hw, unsigned long rate,
>   	return ret;
>   }
>   
> -static long clk_smd_rpm_round_rate(struct clk_hw *hw, unsigned long rate,
> -				   unsigned long *parent_rate)
> +static unsigned long clk_smd_rpm_round_rate(struct clk_hw *hw,
> +					    unsigned long rate,
> +					    unsigned long *parent_rate)
>   {
>   	/*
>   	 * RPM handles rate rounding and we don't have a way to
> diff --git a/drivers/clk/qcom/gcc-ipq4019.c b/drivers/clk/qcom/gcc-ipq4019.c
> index 46cb256..804231b 100644
> --- a/drivers/clk/qcom/gcc-ipq4019.c
> +++ b/drivers/clk/qcom/gcc-ipq4019.c
> @@ -1258,8 +1258,9 @@ static const struct clk_fepll_vco gcc_fepll_vco = {
>    * It looks up the frequency table and returns the next higher frequency
>    * supported in hardware.
>    */
> -static long clk_cpu_div_round_rate(struct clk_hw *hw, unsigned long rate,
> -				   unsigned long *p_rate)
> +static unsigned long clk_cpu_div_round_rate(struct clk_hw *hw,
> +					    unsigned long rate,
> +					    unsigned long *p_rate)
>   {
>   	struct clk_fepll *pll = to_clk_fepll(hw);
>   	struct clk_hw *p_hw;
> diff --git a/drivers/clk/renesas/clk-div6.c b/drivers/clk/renesas/clk-div6.c
> index 151336d..260de92 100644
> --- a/drivers/clk/renesas/clk-div6.c
> +++ b/drivers/clk/renesas/clk-div6.c
> @@ -105,8 +105,9 @@ static unsigned int cpg_div6_clock_calc_div(unsigned long rate,
>   	return clamp_t(unsigned int, div, 1, 64);
>   }
>   
> -static long cpg_div6_clock_round_rate(struct clk_hw *hw, unsigned long rate,
> -				      unsigned long *parent_rate)
> +static unsigned long cpg_div6_clock_round_rate(struct clk_hw *hw,
> +					       unsigned long rate,
> +					       unsigned long *parent_rate)
>   {
>   	unsigned int div = cpg_div6_clock_calc_div(rate, *parent_rate);
>   
> diff --git a/drivers/clk/renesas/clk-rcar-gen2.c b/drivers/clk/renesas/clk-rcar-gen2.c
> index d14cbe1..485182b9 100644
> --- a/drivers/clk/renesas/clk-rcar-gen2.c
> +++ b/drivers/clk/renesas/clk-rcar-gen2.c
> @@ -69,8 +69,8 @@ static unsigned long cpg_z_clk_recalc_rate(struct clk_hw *hw,
>   	return div_u64((u64)parent_rate * mult, 32);
>   }
>   
> -static long cpg_z_clk_round_rate(struct clk_hw *hw, unsigned long rate,
> -				 unsigned long *parent_rate)
> +static unsigned long cpg_z_clk_round_rate(struct clk_hw *hw, unsigned long rate,
> +					  unsigned long *parent_rate)
>   {
>   	unsigned long prate  = *parent_rate;
>   	unsigned int mult;
> diff --git a/drivers/clk/renesas/rcar-gen2-cpg.c b/drivers/clk/renesas/rcar-gen2-cpg.c
> index feb1457..594eff2 100644
> --- a/drivers/clk/renesas/rcar-gen2-cpg.c
> +++ b/drivers/clk/renesas/rcar-gen2-cpg.c
> @@ -65,8 +65,8 @@ static unsigned long cpg_z_clk_recalc_rate(struct clk_hw *hw,
>   	return div_u64((u64)parent_rate * mult, 32);
>   }
>   
> -static long cpg_z_clk_round_rate(struct clk_hw *hw, unsigned long rate,
> -				 unsigned long *parent_rate)
> +static unsigned long cpg_z_clk_round_rate(struct clk_hw *hw, unsigned long rate,
> +					  unsigned long *parent_rate)
>   {
>   	unsigned long prate  = *parent_rate;
>   	unsigned int mult;
> diff --git a/drivers/clk/renesas/rcar-gen3-cpg.c b/drivers/clk/renesas/rcar-gen3-cpg.c
> index 0904886..017b34f 100644
> --- a/drivers/clk/renesas/rcar-gen3-cpg.c
> +++ b/drivers/clk/renesas/rcar-gen3-cpg.c
> @@ -175,8 +175,9 @@ static unsigned int cpg_sd_clock_calc_div(struct sd_clock *clock,
>   	return clamp_t(unsigned int, div, clock->div_min, clock->div_max);
>   }
>   
> -static long cpg_sd_clock_round_rate(struct clk_hw *hw, unsigned long rate,
> -				      unsigned long *parent_rate)
> +static unsigned long cpg_sd_clock_round_rate(struct clk_hw *hw,
> +					     unsigned long rate,
> +					     unsigned long *parent_rate)
>   {
>   	struct sd_clock *clock = to_sd_clock(hw);
>   	unsigned int div = cpg_sd_clock_calc_div(clock, rate, *parent_rate);
> diff --git a/drivers/clk/rockchip/clk-ddr.c b/drivers/clk/rockchip/clk-ddr.c
> index e807535..181053b 100644
> --- a/drivers/clk/rockchip/clk-ddr.c
> +++ b/drivers/clk/rockchip/clk-ddr.c
> @@ -64,9 +64,9 @@ rockchip_ddrclk_sip_recalc_rate(struct clk_hw *hw,
>   	return res.a0;
>   }
>   
> -static long rockchip_ddrclk_sip_round_rate(struct clk_hw *hw,
> -					   unsigned long rate,
> -					   unsigned long *prate)
> +static unsigned long rockchip_ddrclk_sip_round_rate(struct clk_hw *hw,
> +						    unsigned long rate,
> +						    unsigned long *prate)
>   {
>   	struct arm_smccc_res res;
>   
> diff --git a/drivers/clk/rockchip/clk-pll.c b/drivers/clk/rockchip/clk-pll.c
> index dd0433d..7963322 100644
> --- a/drivers/clk/rockchip/clk-pll.c
> +++ b/drivers/clk/rockchip/clk-pll.c
> @@ -69,8 +69,9 @@ static const struct rockchip_pll_rate_table *rockchip_get_pll_settings(
>   	return NULL;
>   }
>   
> -static long rockchip_pll_round_rate(struct clk_hw *hw,
> -			    unsigned long drate, unsigned long *prate)
> +static unsigned long rockchip_pll_round_rate(struct clk_hw *hw,
> +					     unsigned long drate,
> +					     unsigned long *prate)
>   {
>   	struct rockchip_clk_pll *pll = to_rockchip_clk_pll(hw);
>   	const struct rockchip_pll_rate_table *rate_table = pll->rate_table;
> diff --git a/drivers/clk/samsung/clk-cpu.c b/drivers/clk/samsung/clk-cpu.c
> index d2c99d8..e94d5dd 100644
> --- a/drivers/clk/samsung/clk-cpu.c
> +++ b/drivers/clk/samsung/clk-cpu.c
> @@ -104,8 +104,9 @@ static void wait_until_mux_stable(void __iomem *mux_reg, u32 mux_pos,
>   }
>   
>   /* common round rate callback useable for all types of CPU clocks */
> -static long exynos_cpuclk_round_rate(struct clk_hw *hw,
> -			unsigned long drate, unsigned long *prate)
> +static unsigned long exynos_cpuclk_round_rate(struct clk_hw *hw,
> +					      unsigned long drate,
> +					      unsigned long *prate)
>   {
>   	struct clk_hw *parent = clk_hw_get_parent(hw);
>   	*prate = clk_hw_round_rate(parent, drate);
> diff --git a/drivers/clk/samsung/clk-pll.c b/drivers/clk/samsung/clk-pll.c
> index 1c4c7a3..ebdddb0 100644
> --- a/drivers/clk/samsung/clk-pll.c
> +++ b/drivers/clk/samsung/clk-pll.c
> @@ -48,8 +48,9 @@ static const struct samsung_pll_rate_table *samsung_get_pll_settings(
>   	return NULL;
>   }
>   
> -static long samsung_pll_round_rate(struct clk_hw *hw,
> -			unsigned long drate, unsigned long *prate)
> +static unsigned long samsung_pll_round_rate(struct clk_hw *hw,
> +					    unsigned long drate,
> +					    unsigned long *prate)
>   {
>   	struct samsung_clk_pll *pll = to_clk_pll(hw);
>   	const struct samsung_pll_rate_table *rate_table = pll->rate_table;
> diff --git a/drivers/clk/sirf/clk-atlas7.c b/drivers/clk/sirf/clk-atlas7.c
> index be012b4..99703d4 100644
> --- a/drivers/clk/sirf/clk-atlas7.c
> +++ b/drivers/clk/sirf/clk-atlas7.c
> @@ -535,8 +535,8 @@ static unsigned long dto_clk_recalc_rate(struct clk_hw *hw,
>   	return rate;
>   }
>   
> -static long dto_clk_round_rate(struct clk_hw *hw, unsigned long rate,
> -	unsigned long *parent_rate)
> +static unsigned long dto_clk_round_rate(struct clk_hw *hw, unsigned long rate,
> +					unsigned long *parent_rate)
>   {
>   	u64 dividend = rate * DTO_RESL_DOUBLE;
>   
> diff --git a/drivers/clk/sirf/clk-common.c b/drivers/clk/sirf/clk-common.c
> index d8f9efa..3ce6741 100644
> --- a/drivers/clk/sirf/clk-common.c
> +++ b/drivers/clk/sirf/clk-common.c
> @@ -93,8 +93,8 @@ static unsigned long pll_clk_recalc_rate(struct clk_hw *hw,
>   	}
>   }
>   
> -static long pll_clk_round_rate(struct clk_hw *hw, unsigned long rate,
> -	unsigned long *parent_rate)
> +static unsigned long pll_clk_round_rate(struct clk_hw *hw, unsigned long rate,
> +					unsigned long *parent_rate)
>   {
>   	unsigned long fin, nf, nr, od;
>   	u64 dividend;
> @@ -160,8 +160,8 @@ static int pll_clk_set_rate(struct clk_hw *hw, unsigned long rate,
>   	return 0;
>   }
>   
> -static long cpu_clk_round_rate(struct clk_hw *hw, unsigned long rate,
> -	unsigned long *parent_rate)
> +static unsigned long cpu_clk_round_rate(struct clk_hw *hw, unsigned long rate,
> +					unsigned long *parent_rate)
>   {
>   	/*
>   	 * SiRF SoC has not cpu clock control,
> @@ -349,8 +349,8 @@ static unsigned long dmn_clk_recalc_rate(struct clk_hw *hw,
>   	}
>   }
>   
> -static long dmn_clk_round_rate(struct clk_hw *hw, unsigned long rate,
> -	unsigned long *parent_rate)
> +static unsigned long dmn_clk_round_rate(struct clk_hw *hw, unsigned long rate,
> +					unsigned long *parent_rate)
>   {
>   	unsigned long fin;
>   	unsigned ratio, wait, hold;
> diff --git a/drivers/clk/spear/clk-aux-synth.c b/drivers/clk/spear/clk-aux-synth.c
> index 9064104..536134d 100644
> --- a/drivers/clk/spear/clk-aux-synth.c
> +++ b/drivers/clk/spear/clk-aux-synth.c
> @@ -52,8 +52,8 @@ static unsigned long aux_calc_rate(struct clk_hw *hw, unsigned long prate,
>   			(rtbl[index].yscale * eq)) * 10000;
>   }
>   
> -static long clk_aux_round_rate(struct clk_hw *hw, unsigned long drate,
> -		unsigned long *prate)
> +static unsigned long clk_aux_round_rate(struct clk_hw *hw, unsigned long drate,
> +					unsigned long *prate)
>   {
>   	struct clk_aux *aux = to_clk_aux(hw);
>   	int unused;
> diff --git a/drivers/clk/spear/clk-frac-synth.c b/drivers/clk/spear/clk-frac-synth.c
> index 229c96d..c9d551c 100644
> --- a/drivers/clk/spear/clk-frac-synth.c
> +++ b/drivers/clk/spear/clk-frac-synth.c
> @@ -55,8 +55,8 @@ static unsigned long frac_calc_rate(struct clk_hw *hw, unsigned long prate,
>   	return prate;
>   }
>   
> -static long clk_frac_round_rate(struct clk_hw *hw, unsigned long drate,
> -		unsigned long *prate)
> +static unsigned long clk_frac_round_rate(struct clk_hw *hw, unsigned long drate,
> +					 unsigned long *prate)
>   {
>   	struct clk_frac *frac = to_clk_frac(hw);
>   	int unused;
> diff --git a/drivers/clk/spear/clk-gpt-synth.c b/drivers/clk/spear/clk-gpt-synth.c
> index 28262f4..5cb8c69 100644
> --- a/drivers/clk/spear/clk-gpt-synth.c
> +++ b/drivers/clk/spear/clk-gpt-synth.c
> @@ -42,8 +42,8 @@ static unsigned long gpt_calc_rate(struct clk_hw *hw, unsigned long prate,
>   	return prate;
>   }
>   
> -static long clk_gpt_round_rate(struct clk_hw *hw, unsigned long drate,
> -		unsigned long *prate)
> +static unsigned long clk_gpt_round_rate(struct clk_hw *hw, unsigned long drate,
> +					unsigned long *prate)
>   {
>   	struct clk_gpt *gpt = to_clk_gpt(hw);
>   	int unused;
> diff --git a/drivers/clk/spear/clk-vco-pll.c b/drivers/clk/spear/clk-vco-pll.c
> index c08dec3..d168897 100644
> --- a/drivers/clk/spear/clk-vco-pll.c
> +++ b/drivers/clk/spear/clk-vco-pll.c
> @@ -81,8 +81,9 @@ static unsigned long pll_calc_rate(struct pll_rate_tbl *rtbl,
>   	return rate * 10000;
>   }
>   
> -static long clk_pll_round_rate_index(struct clk_hw *hw, unsigned long drate,
> -				unsigned long *prate, int *index)
> +static unsigned long clk_pll_round_rate_index(struct clk_hw *hw,
> +					      unsigned long drate,
> +					      unsigned long *prate, int *index)
>   {
>   	struct clk_pll *pll = to_clk_pll(hw);
>   	unsigned long prev_rate, vco_prev_rate, rate = 0;
> @@ -113,8 +114,8 @@ static long clk_pll_round_rate_index(struct clk_hw *hw, unsigned long drate,
>   	return rate;
>   }
>   
> -static long clk_pll_round_rate(struct clk_hw *hw, unsigned long drate,
> -				unsigned long *prate)
> +static unsigned long clk_pll_round_rate(struct clk_hw *hw, unsigned long drate,
> +					unsigned long *prate)
>   {
>   	int unused;
>   
> @@ -179,8 +180,8 @@ static inline unsigned long vco_calc_rate(struct clk_hw *hw,
>   	return pll_calc_rate(vco->rtbl, prate, index, NULL);
>   }
>   
> -static long clk_vco_round_rate(struct clk_hw *hw, unsigned long drate,
> -		unsigned long *prate)
> +static unsigned long clk_vco_round_rate(struct clk_hw *hw, unsigned long drate,
> +					unsigned long *prate)
>   {
>   	struct clk_vco *vco = to_clk_vco(hw);
>   	int unused;
> diff --git a/drivers/clk/spear/clk.c b/drivers/clk/spear/clk.c
> index 157fe09..335af3b 100644
> --- a/drivers/clk/spear/clk.c
> +++ b/drivers/clk/spear/clk.c
> @@ -13,9 +13,10 @@
>   #include <linux/types.h>
>   #include "clk.h"
>   
> -long clk_round_rate_index(struct clk_hw *hw, unsigned long drate,
> -		unsigned long parent_rate, clk_calc_rate calc_rate, u8 rtbl_cnt,
> -		int *index)
> +unsigned long clk_round_rate_index(struct clk_hw *hw, unsigned long drate,
> +				   unsigned long parent_rate,
> +				   clk_calc_rate calc_rate, u8 rtbl_cnt,
> +				   int *index)
>   {
>   	unsigned long prev_rate, rate = 0;
>   
> diff --git a/drivers/clk/spear/clk.h b/drivers/clk/spear/clk.h
> index af0e25f..c8b81f2 100644
> --- a/drivers/clk/spear/clk.h
> +++ b/drivers/clk/spear/clk.h
> @@ -127,8 +127,9 @@ struct clk *clk_register_vco_pll(const char *vco_name, const char *pll_name,
>   		spinlock_t *lock, struct clk **pll_clk,
>   		struct clk **vco_gate_clk);
>   
> -long clk_round_rate_index(struct clk_hw *hw, unsigned long drate,
> -		unsigned long parent_rate, clk_calc_rate calc_rate, u8 rtbl_cnt,
> -		int *index);
> +unsigned long clk_round_rate_index(struct clk_hw *hw, unsigned long drate,
> +				   unsigned long parent_rate,
> +				   clk_calc_rate calc_rate, u8 rtbl_cnt,
> +				   int *index);
>   
>   #endif /* __SPEAR_CLK_H */
> diff --git a/drivers/clk/st/clk-flexgen.c b/drivers/clk/st/clk-flexgen.c
> index 918ba31..682ba23 100644
> --- a/drivers/clk/st/clk-flexgen.c
> +++ b/drivers/clk/st/clk-flexgen.c
> @@ -111,8 +111,8 @@ clk_best_div(unsigned long parent_rate, unsigned long rate)
>   	return parent_rate / rate + ((rate > (2*(parent_rate % rate))) ? 0 : 1);
>   }
>   
> -static long flexgen_round_rate(struct clk_hw *hw, unsigned long rate,
> -				   unsigned long *prate)
> +static unsigned long flexgen_round_rate(struct clk_hw *hw, unsigned long rate,
> +					unsigned long *prate)
>   {
>   	unsigned long div;
>   
> diff --git a/drivers/clk/st/clkgen-fsyn.c b/drivers/clk/st/clkgen-fsyn.c
> index 14819d9..f6a1a85 100644
> --- a/drivers/clk/st/clkgen-fsyn.c
> +++ b/drivers/clk/st/clkgen-fsyn.c
> @@ -318,9 +318,9 @@ static int clk_fs660c32_vco_get_params(unsigned long input,
>   	return 0;
>   }
>   
> -static long quadfs_pll_fs660c32_round_rate(struct clk_hw *hw,
> -					   unsigned long rate,
> -					   unsigned long *prate)
> +static unsigned long quadfs_pll_fs660c32_round_rate(struct clk_hw *hw,
> +						    unsigned long rate,
> +						    unsigned long *prate)
>   {
>   	struct stm_fs params;
>   
> @@ -757,8 +757,8 @@ static unsigned long quadfs_recalc_rate(struct clk_hw *hw,
>   	return rate;
>   }
>   
> -static long quadfs_round_rate(struct clk_hw *hw, unsigned long rate,
> -				     unsigned long *prate)
> +static unsigned long quadfs_round_rate(struct clk_hw *hw, unsigned long rate,
> +				       unsigned long *prate)
>   {
>   	struct stm_fs params;
>   
> diff --git a/drivers/clk/st/clkgen-pll.c b/drivers/clk/st/clkgen-pll.c
> index 25bda48..64ac4e1 100644
> --- a/drivers/clk/st/clkgen-pll.c
> +++ b/drivers/clk/st/clkgen-pll.c
> @@ -351,8 +351,9 @@ static unsigned long recalc_stm_pll3200c32(struct clk_hw *hw,
>   	return rate;
>   }
>   
> -static long round_rate_stm_pll3200c32(struct clk_hw *hw, unsigned long rate,
> -		unsigned long *prate)
> +static unsigned long round_rate_stm_pll3200c32(struct clk_hw *hw,
> +					       unsigned long rate,
> +					       unsigned long *prate)
>   {
>   	struct stm_pll params;
>   
> @@ -505,8 +506,9 @@ static unsigned long recalc_stm_pll4600c28(struct clk_hw *hw,
>   	return rate;
>   }
>   
> -static long round_rate_stm_pll4600c28(struct clk_hw *hw, unsigned long rate,
> -				      unsigned long *prate)
> +static unsigned long round_rate_stm_pll4600c28(struct clk_hw *hw,
> +					       unsigned long rate,
> +					       unsigned long *prate)
>   {
>   	struct stm_pll params;
>   
> diff --git a/drivers/clk/sunxi-ng/ccu_nk.c b/drivers/clk/sunxi-ng/ccu_nk.c
> index 2485bda..031f934 100644
> --- a/drivers/clk/sunxi-ng/ccu_nk.c
> +++ b/drivers/clk/sunxi-ng/ccu_nk.c
> @@ -93,8 +93,8 @@ static unsigned long ccu_nk_recalc_rate(struct clk_hw *hw,
>   	return rate;
>   }
>   
> -static long ccu_nk_round_rate(struct clk_hw *hw, unsigned long rate,
> -			      unsigned long *parent_rate)
> +static unsigned long ccu_nk_round_rate(struct clk_hw *hw, unsigned long rate,
> +				       unsigned long *parent_rate)
>   {
>   	struct ccu_nk *nk = hw_to_ccu_nk(hw);
>   	struct _ccu_nk _nk;
> diff --git a/drivers/clk/sunxi-ng/ccu_nkmp.c b/drivers/clk/sunxi-ng/ccu_nkmp.c
> index e58c957..62fbba7 100644
> --- a/drivers/clk/sunxi-ng/ccu_nkmp.c
> +++ b/drivers/clk/sunxi-ng/ccu_nkmp.c
> @@ -110,8 +110,8 @@ static unsigned long ccu_nkmp_recalc_rate(struct clk_hw *hw,
>   	return (parent_rate * n * k >> p) / m;
>   }
>   
> -static long ccu_nkmp_round_rate(struct clk_hw *hw, unsigned long rate,
> -			      unsigned long *parent_rate)
> +static unsigned long ccu_nkmp_round_rate(struct clk_hw *hw, unsigned long rate,
> +					 unsigned long *parent_rate)
>   {
>   	struct ccu_nkmp *nkmp = hw_to_ccu_nkmp(hw);
>   	struct _ccu_nkmp _nkmp;
> diff --git a/drivers/clk/sunxi-ng/ccu_nm.c b/drivers/clk/sunxi-ng/ccu_nm.c
> index 7620aa9..0f5beb4 100644
> --- a/drivers/clk/sunxi-ng/ccu_nm.c
> +++ b/drivers/clk/sunxi-ng/ccu_nm.c
> @@ -101,8 +101,8 @@ static unsigned long ccu_nm_recalc_rate(struct clk_hw *hw,
>   	return parent_rate * n / m;
>   }
>   
> -static long ccu_nm_round_rate(struct clk_hw *hw, unsigned long rate,
> -			      unsigned long *parent_rate)
> +static unsigned long ccu_nm_round_rate(struct clk_hw *hw, unsigned long rate,
> +				       unsigned long *parent_rate)
>   {
>   	struct ccu_nm *nm = hw_to_ccu_nm(hw);
>   	struct _ccu_nm _nm;
> diff --git a/drivers/clk/tegra/clk-audio-sync.c b/drivers/clk/tegra/clk-audio-sync.c
> index 92d04ce..9784d58 100644
> --- a/drivers/clk/tegra/clk-audio-sync.c
> +++ b/drivers/clk/tegra/clk-audio-sync.c
> @@ -28,8 +28,9 @@ static unsigned long clk_sync_source_recalc_rate(struct clk_hw *hw,
>   	return sync->rate;
>   }
>   
> -static long clk_sync_source_round_rate(struct clk_hw *hw, unsigned long rate,
> -				       unsigned long *prate)
> +static unsigned long clk_sync_source_round_rate(struct clk_hw *hw,
> +						unsigned long rate,
> +						unsigned long *prate)
>   {
>   	struct tegra_clk_sync_source *sync = to_clk_sync_source(hw);
>   
> diff --git a/drivers/clk/tegra/clk-bpmp.c b/drivers/clk/tegra/clk-bpmp.c
> index a896692..0c1197b 100644
> --- a/drivers/clk/tegra/clk-bpmp.c
> +++ b/drivers/clk/tegra/clk-bpmp.c
> @@ -167,8 +167,9 @@ static unsigned long tegra_bpmp_clk_recalc_rate(struct clk_hw *hw,
>   	return response.rate;
>   }
>   
> -static long tegra_bpmp_clk_round_rate(struct clk_hw *hw, unsigned long rate,
> -				      unsigned long *parent_rate)
> +static unsigned long tegra_bpmp_clk_round_rate(struct clk_hw *hw,
> +					       unsigned long rate,
> +					       unsigned long *parent_rate)
>   {
>   	struct tegra_bpmp_clk *clk = to_tegra_bpmp_clk(hw);
>   	struct cmd_clk_round_rate_response response;
> diff --git a/drivers/clk/tegra/clk-divider.c b/drivers/clk/tegra/clk-divider.c
> index 16e0aee..d827943 100644
> --- a/drivers/clk/tegra/clk-divider.c
> +++ b/drivers/clk/tegra/clk-divider.c
> @@ -84,8 +84,9 @@ static unsigned long clk_frac_div_recalc_rate(struct clk_hw *hw,
>   	return rate;
>   }
>   
> -static long clk_frac_div_round_rate(struct clk_hw *hw, unsigned long rate,
> -				   unsigned long *prate)
> +static unsigned long clk_frac_div_round_rate(struct clk_hw *hw,
> +					     unsigned long rate,
> +					     unsigned long *prate)
>   {
>   	struct tegra_clk_frac_div *divider = to_clk_frac_div(hw);
>   	int div, mul;
> diff --git a/drivers/clk/tegra/clk-periph.c b/drivers/clk/tegra/clk-periph.c
> index 9475c00..e68104c 100644
> --- a/drivers/clk/tegra/clk-periph.c
> +++ b/drivers/clk/tegra/clk-periph.c
> @@ -55,8 +55,9 @@ static unsigned long clk_periph_recalc_rate(struct clk_hw *hw,
>   	return div_ops->recalc_rate(div_hw, parent_rate);
>   }
>   
> -static long clk_periph_round_rate(struct clk_hw *hw, unsigned long rate,
> -				  unsigned long *prate)
> +static unsigned long clk_periph_round_rate(struct clk_hw *hw,
> +					   unsigned long rate,
> +					   unsigned long *prate)
>   {
>   	struct tegra_clk_periph *periph = to_clk_periph(hw);
>   	const struct clk_ops *div_ops = periph->div_ops;
> diff --git a/drivers/clk/tegra/clk-pll.c b/drivers/clk/tegra/clk-pll.c
> index 7c369e2..b4a7d30 100644
> --- a/drivers/clk/tegra/clk-pll.c
> +++ b/drivers/clk/tegra/clk-pll.c
> @@ -824,8 +824,8 @@ static int clk_pll_set_rate(struct clk_hw *hw, unsigned long rate,
>   	return ret;
>   }
>   
> -static long clk_pll_round_rate(struct clk_hw *hw, unsigned long rate,
> -			unsigned long *prate)
> +static unsigned long clk_pll_round_rate(struct clk_hw *hw, unsigned long rate,
> +					unsigned long *prate)
>   {
>   	struct tegra_clk_pll *pll = to_clk_pll(hw);
>   	struct tegra_clk_pll_freq_table cfg;
> @@ -1307,8 +1307,9 @@ static int clk_pllxc_set_rate(struct clk_hw *hw, unsigned long rate,
>   	return ret;
>   }
>   
> -static long clk_pll_ramp_round_rate(struct clk_hw *hw, unsigned long rate,
> -				unsigned long *prate)
> +static unsigned long clk_pll_ramp_round_rate(struct clk_hw *hw,
> +					     unsigned long rate,
> +					     unsigned long *prate)
>   {
>   	struct tegra_clk_pll *pll = to_clk_pll(hw);
>   	struct tegra_clk_pll_freq_table cfg;
> @@ -1549,8 +1550,8 @@ static unsigned long clk_pllre_recalc_rate(struct clk_hw *hw,
>   	return rate;
>   }
>   
> -static long clk_pllre_round_rate(struct clk_hw *hw, unsigned long rate,
> -				 unsigned long *prate)
> +static unsigned long clk_pllre_round_rate(struct clk_hw *hw, unsigned long rate,
> +					  unsigned long *prate)
>   {
>   	struct tegra_clk_pll *pll = to_clk_pll(hw);
>   
> diff --git a/drivers/clk/tegra/clk-super.c b/drivers/clk/tegra/clk-super.c
> index 84267cf..a8fa71e 100644
> --- a/drivers/clk/tegra/clk-super.c
> +++ b/drivers/clk/tegra/clk-super.c
> @@ -126,8 +126,8 @@ const struct clk_ops tegra_clk_super_mux_ops = {
>   	.set_parent = clk_super_set_parent,
>   };
>   
> -static long clk_super_round_rate(struct clk_hw *hw, unsigned long rate,
> -				 unsigned long *parent_rate)
> +static unsigned long clk_super_round_rate(struct clk_hw *hw, unsigned long rate,
> +					  unsigned long *parent_rate)
>   {
>   	struct tegra_clk_super_mux *super = to_clk_super_mux(hw);
>   	struct clk_hw *div_hw = &super->frac_div.hw;
> diff --git a/drivers/clk/ti/clk-dra7-atl.c b/drivers/clk/ti/clk-dra7-atl.c
> index 1488154..bd689ce 100644
> --- a/drivers/clk/ti/clk-dra7-atl.c
> +++ b/drivers/clk/ti/clk-dra7-atl.c
> @@ -128,8 +128,8 @@ static unsigned long atl_clk_recalc_rate(struct clk_hw *hw,
>   	return parent_rate / cdesc->divider;
>   }
>   
> -static long atl_clk_round_rate(struct clk_hw *hw, unsigned long rate,
> -			       unsigned long *parent_rate)
> +static unsigned long atl_clk_round_rate(struct clk_hw *hw, unsigned long rate,
> +					unsigned long *parent_rate)
>   {
>   	unsigned divider;
>   
> diff --git a/drivers/clk/ti/composite.c b/drivers/clk/ti/composite.c
> index beea894..2477cf1 100644
> --- a/drivers/clk/ti/composite.c
> +++ b/drivers/clk/ti/composite.c
> @@ -34,8 +34,9 @@ static unsigned long ti_composite_recalc_rate(struct clk_hw *hw,
>   	return ti_clk_divider_ops.recalc_rate(hw, parent_rate);
>   }
>   
> -static long ti_composite_round_rate(struct clk_hw *hw, unsigned long rate,
> -				    unsigned long *prate)
> +static unsigned long ti_composite_round_rate(struct clk_hw *hw,
> +					     unsigned long rate,
> +					     unsigned long *prate)
>   {
>   	return -EINVAL;
>   }
> diff --git a/drivers/clk/ti/divider.c b/drivers/clk/ti/divider.c
> index 77f93f6..a194250 100644
> --- a/drivers/clk/ti/divider.c
> +++ b/drivers/clk/ti/divider.c
> @@ -227,8 +227,9 @@ static int ti_clk_divider_bestdiv(struct clk_hw *hw, unsigned long rate,
>   	return bestdiv;
>   }
>   
> -static long ti_clk_divider_round_rate(struct clk_hw *hw, unsigned long rate,
> -				      unsigned long *prate)
> +static unsigned long ti_clk_divider_round_rate(struct clk_hw *hw,
> +					       unsigned long rate,
> +					       unsigned long *prate)
>   {
>   	int div;
>   	div = ti_clk_divider_bestdiv(hw, rate, prate);
> diff --git a/drivers/clk/ti/fapll.c b/drivers/clk/ti/fapll.c
> index 071af44..2e74437 100644
> --- a/drivers/clk/ti/fapll.c
> +++ b/drivers/clk/ti/fapll.c
> @@ -220,8 +220,8 @@ static int ti_fapll_set_div_mult(unsigned long rate,
>   	return 0;
>   }
>   
> -static long ti_fapll_round_rate(struct clk_hw *hw, unsigned long rate,
> -				unsigned long *parent_rate)
> +static unsigned long ti_fapll_round_rate(struct clk_hw *hw, unsigned long rate,
> +					 unsigned long *parent_rate)
>   {
>   	u32 pre_div_p, mult_n;
>   	int error;
> @@ -405,8 +405,9 @@ static u32 ti_fapll_synth_set_frac_rate(struct fapll_synth *synth,
>   	return post_div_m;
>   }
>   
> -static long ti_fapll_synth_round_rate(struct clk_hw *hw, unsigned long rate,
> -				      unsigned long *parent_rate)
> +static unsigned long ti_fapll_synth_round_rate(struct clk_hw *hw,
> +					       unsigned long rate,
> +					       unsigned long *parent_rate)
>   {
>   	struct fapll_synth *synth = to_synth(hw);
>   	struct fapll_data *fd = synth->fd;
> diff --git a/drivers/clk/ux500/clk-prcmu.c b/drivers/clk/ux500/clk-prcmu.c
> index 9d1f2d4..8eb7c7a 100644
> --- a/drivers/clk/ux500/clk-prcmu.c
> +++ b/drivers/clk/ux500/clk-prcmu.c
> @@ -80,8 +80,8 @@ static unsigned long clk_prcmu_recalc_rate(struct clk_hw *hw,
>   	return prcmu_clock_rate(clk->cg_sel);
>   }
>   
> -static long clk_prcmu_round_rate(struct clk_hw *hw, unsigned long rate,
> -				 unsigned long *parent_rate)
> +static unsigned long clk_prcmu_round_rate(struct clk_hw *hw, unsigned long rate,
> +					  unsigned long *parent_rate)
>   {
>   	struct clk_prcmu *clk = to_clk_prcmu(hw);
>   	return prcmu_round_clock_rate(clk->cg_sel, rate);
> diff --git a/drivers/clk/versatile/clk-icst.c b/drivers/clk/versatile/clk-icst.c
> index dafe7a4..2fb3cdc 100644
> --- a/drivers/clk/versatile/clk-icst.c
> +++ b/drivers/clk/versatile/clk-icst.c
> @@ -248,8 +248,8 @@ static unsigned long icst_recalc_rate(struct clk_hw *hw,
>   	return icst->rate;
>   }
>   
> -static long icst_round_rate(struct clk_hw *hw, unsigned long rate,
> -			    unsigned long *prate)
> +static unsigned long icst_round_rate(struct clk_hw *hw, unsigned long rate,
> +				     unsigned long *prate)
>   {
>   	struct clk_icst *icst = to_icst(hw);
>   	struct icst_vco vco;
> diff --git a/drivers/clk/versatile/clk-vexpress-osc.c b/drivers/clk/versatile/clk-vexpress-osc.c
> index e7a868b..0d02097 100644
> --- a/drivers/clk/versatile/clk-vexpress-osc.c
> +++ b/drivers/clk/versatile/clk-vexpress-osc.c
> @@ -39,8 +39,9 @@ static unsigned long vexpress_osc_recalc_rate(struct clk_hw *hw,
>   	return rate;
>   }
>   
> -static long vexpress_osc_round_rate(struct clk_hw *hw, unsigned long rate,
> -		unsigned long *parent_rate)
> +static unsigned long vexpress_osc_round_rate(struct clk_hw *hw,
> +					     unsigned long rate,
> +					     unsigned long *parent_rate)
>   {
>   	struct vexpress_osc *osc = to_vexpress_osc(hw);
>   
> diff --git a/drivers/clk/zte/clk.c b/drivers/clk/zte/clk.c
> index b820317..df91842 100644
> --- a/drivers/clk/zte/clk.c
> +++ b/drivers/clk/zte/clk.c
> @@ -78,8 +78,8 @@ static unsigned long zx_pll_recalc_rate(struct clk_hw *hw,
>   	return zx_pll->lookup_table[idx].rate;
>   }
>   
> -static long zx_pll_round_rate(struct clk_hw *hw, unsigned long rate,
> -			      unsigned long *prate)
> +static unsigned long zx_pll_round_rate(struct clk_hw *hw, unsigned long rate,
> +				       unsigned long *prate)
>   {
>   	struct clk_zx_pll *zx_pll = to_clk_zx_pll(hw);
>   	int idx;
> @@ -241,8 +241,8 @@ static unsigned long zx_audio_recalc_rate(struct clk_hw *hw,
>   	return calc_rate(reg, parent_rate);
>   }
>   
> -static long zx_audio_round_rate(struct clk_hw *hw, unsigned long rate,
> -				unsigned long *prate)
> +static unsigned long zx_audio_round_rate(struct clk_hw *hw, unsigned long rate,
> +					 unsigned long *prate)
>   {
>   	u32 reg;
>   
> @@ -404,8 +404,9 @@ static unsigned long zx_audio_div_recalc_rate(struct clk_hw *hw,
>   	return audio_calc_rate(zx_audio_div, reg_frac, reg_int, parent_rate);
>   }
>   
> -static long zx_audio_div_round_rate(struct clk_hw *hw, unsigned long rate,
> -				unsigned long *prate)
> +static unsigned long zx_audio_div_round_rate(struct clk_hw *hw,
> +					     unsigned long rate,
> +					     unsigned long *prate)
>   {
>   	struct clk_zx_audio_divider *zx_audio_div = to_clk_zx_audio_div(hw);
>   	struct zx_clk_audio_div_table divt;
> diff --git a/drivers/clk/zynq/pll.c b/drivers/clk/zynq/pll.c
> index 00d72fb..827a375 100644
> --- a/drivers/clk/zynq/pll.c
> +++ b/drivers/clk/zynq/pll.c
> @@ -60,8 +60,8 @@ struct zynq_pll {
>    * @prate:	Clock frequency of parent clock
>    * Returns frequency closest to @rate the hardware can generate.
>    */
> -static long zynq_pll_round_rate(struct clk_hw *hw, unsigned long rate,
> -		unsigned long *prate)
> +static unsigned long zynq_pll_round_rate(struct clk_hw *hw, unsigned long rate,
> +					 unsigned long *prate)
>   {
>   	u32 fbdiv;
>   
> diff --git a/drivers/gpu/drm/imx/imx-tve.c b/drivers/gpu/drm/imx/imx-tve.c
> index bc27c26..8533bd5 100644
> --- a/drivers/gpu/drm/imx/imx-tve.c
> +++ b/drivers/gpu/drm/imx/imx-tve.c
> @@ -402,8 +402,9 @@ static unsigned long clk_tve_di_recalc_rate(struct clk_hw *hw,
>   	return 0;
>   }
>   
> -static long clk_tve_di_round_rate(struct clk_hw *hw, unsigned long rate,
> -				  unsigned long *prate)
> +static unsigned long clk_tve_di_round_rate(struct clk_hw *hw,
> +					   unsigned long rate,
> +					   unsigned long *prate)
>   {
>   	unsigned long div;
>   
> diff --git a/drivers/gpu/drm/mediatek/mtk_mipi_tx.c b/drivers/gpu/drm/mediatek/mtk_mipi_tx.c
> index 90e9131..b7e920c 100644
> --- a/drivers/gpu/drm/mediatek/mtk_mipi_tx.c
> +++ b/drivers/gpu/drm/mediatek/mtk_mipi_tx.c
> @@ -289,8 +289,9 @@ static void mtk_mipi_tx_pll_unprepare(struct clk_hw *hw)
>   			       RG_DSI_MPPLL_DIV_MSK);
>   }
>   
> -static long mtk_mipi_tx_pll_round_rate(struct clk_hw *hw, unsigned long rate,
> -				       unsigned long *prate)
> +static unsigned long mtk_mipi_tx_pll_round_rate(struct clk_hw *hw,
> +						unsigned long rate,
> +						unsigned long *prate)
>   {
>   	return clamp_val(rate, 50000000, 1250000000);
>   }
> diff --git a/drivers/gpu/drm/mediatek/mtk_mt8173_hdmi_phy.c b/drivers/gpu/drm/mediatek/mtk_mt8173_hdmi_phy.c
> index 51cb9cf..3a031bd 100644
> --- a/drivers/gpu/drm/mediatek/mtk_mt8173_hdmi_phy.c
> +++ b/drivers/gpu/drm/mediatek/mtk_mt8173_hdmi_phy.c
> @@ -345,8 +345,9 @@ static int mtk_hdmi_pll_set_rate(struct clk_hw *hw, unsigned long rate,
>   	return 0;
>   }
>   
> -static long mtk_hdmi_pll_round_rate(struct clk_hw *hw, unsigned long rate,
> -				    unsigned long *parent_rate)
> +static unsigned long mtk_hdmi_pll_round_rate(struct clk_hw *hw,
> +					     unsigned long rate,
> +					     unsigned long *parent_rate)
>   {
>   	struct mtk_hdmi_phy *hdmi_phy = to_mtk_hdmi_phy(hw);
>   
> diff --git a/drivers/gpu/drm/msm/dsi/pll/dsi_pll.c b/drivers/gpu/drm/msm/dsi/pll/dsi_pll.c
> index bc289f5..a8ceb80 100644
> --- a/drivers/gpu/drm/msm/dsi/pll/dsi_pll.c
> +++ b/drivers/gpu/drm/msm/dsi/pll/dsi_pll.c
> @@ -56,8 +56,9 @@ static void dsi_pll_disable(struct msm_dsi_pll *pll)
>   /*
>    * DSI PLL Helper functions
>    */
> -long msm_dsi_pll_helper_clk_round_rate(struct clk_hw *hw,
> -		unsigned long rate, unsigned long *parent_rate)
> +unsigned long msm_dsi_pll_helper_clk_round_rate(struct clk_hw *hw,
> +						unsigned long rate,
> +						unsigned long *parent_rate)
>   {
>   	struct msm_dsi_pll *pll = hw_clk_to_pll(hw);
>   
> diff --git a/drivers/gpu/drm/msm/dsi/pll/dsi_pll.h b/drivers/gpu/drm/msm/dsi/pll/dsi_pll.h
> index f63e7ad..66e5a2a 100644
> --- a/drivers/gpu/drm/msm/dsi/pll/dsi_pll.h
> +++ b/drivers/gpu/drm/msm/dsi/pll/dsi_pll.h
> @@ -74,8 +74,9 @@ static inline void pll_write_ndelay(void __iomem *reg, u32 data, u32 delay_ns)
>    */
>   
>   /* clock callbacks */
> -long msm_dsi_pll_helper_clk_round_rate(struct clk_hw *hw,
> -		unsigned long rate, unsigned long *parent_rate);
> +unsigned long msm_dsi_pll_helper_clk_round_rate(struct clk_hw *hw,
> +						unsigned long rate,
> +						unsigned long *parent_rate);
>   int msm_dsi_pll_helper_clk_prepare(struct clk_hw *hw);
>   void msm_dsi_pll_helper_clk_unprepare(struct clk_hw *hw);
>   /* misc */
> diff --git a/drivers/gpu/drm/msm/dsi/pll/dsi_pll_14nm.c b/drivers/gpu/drm/msm/dsi/pll/dsi_pll_14nm.c
> index fe15aa6..eba0a32 100644
> --- a/drivers/gpu/drm/msm/dsi/pll/dsi_pll_14nm.c
> +++ b/drivers/gpu/drm/msm/dsi/pll/dsi_pll_14nm.c
> @@ -701,9 +701,9 @@ static unsigned long dsi_pll_14nm_postdiv_recalc_rate(struct clk_hw *hw,
>   				   postdiv->flags);
>   }
>   
> -static long dsi_pll_14nm_postdiv_round_rate(struct clk_hw *hw,
> -					    unsigned long rate,
> -					    unsigned long *prate)
> +static unsigned long dsi_pll_14nm_postdiv_round_rate(struct clk_hw *hw,
> +						     unsigned long rate,
> +						     unsigned long *prate)
>   {
>   	struct dsi_pll_14nm_postdiv *postdiv = to_pll_14nm_postdiv(hw);
>   	struct dsi_pll_14nm *pll_14nm = postdiv->pll;
> diff --git a/drivers/gpu/drm/msm/dsi/pll/dsi_pll_28nm_8960.c b/drivers/gpu/drm/msm/dsi/pll/dsi_pll_28nm_8960.c
> index 4900845..f081731 100644
> --- a/drivers/gpu/drm/msm/dsi/pll/dsi_pll_28nm_8960.c
> +++ b/drivers/gpu/drm/msm/dsi/pll/dsi_pll_28nm_8960.c
> @@ -252,8 +252,9 @@ static unsigned int get_vco_mul_factor(unsigned long byte_clk_rate)
>   		return 8;
>   }
>   
> -static long clk_bytediv_round_rate(struct clk_hw *hw, unsigned long rate,
> -				   unsigned long *prate)
> +static unsigned long clk_bytediv_round_rate(struct clk_hw *hw,
> +					    unsigned long rate,
> +					    unsigned long *prate)
>   {
>   	unsigned long best_parent;
>   	unsigned int factor;
> diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_phy_8996.c b/drivers/gpu/drm/msm/hdmi/hdmi_phy_8996.c
> index 0df504c..46ca7a5 100644
> --- a/drivers/gpu/drm/msm/hdmi/hdmi_phy_8996.c
> +++ b/drivers/gpu/drm/msm/hdmi/hdmi_phy_8996.c
> @@ -636,9 +636,9 @@ static int hdmi_8996_pll_prepare(struct clk_hw *hw)
>   	return 0;
>   }
>   
> -static long hdmi_8996_pll_round_rate(struct clk_hw *hw,
> -				     unsigned long rate,
> -				     unsigned long *parent_rate)
> +static unsigned long hdmi_8996_pll_round_rate(struct clk_hw *hw,
> +					      unsigned long rate,
> +					      unsigned long *parent_rate)
>   {
>   	if (rate < HDMI_PCLK_MIN_FREQ)
>   		return HDMI_PCLK_MIN_FREQ;
> diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_pll_8960.c b/drivers/gpu/drm/msm/hdmi/hdmi_pll_8960.c
> index 9959075..a0c3650 100644
> --- a/drivers/gpu/drm/msm/hdmi/hdmi_pll_8960.c
> +++ b/drivers/gpu/drm/msm/hdmi/hdmi_pll_8960.c
> @@ -382,8 +382,8 @@ static unsigned long hdmi_pll_recalc_rate(struct clk_hw *hw,
>   	return pll->pixclk;
>   }
>   
> -static long hdmi_pll_round_rate(struct clk_hw *hw, unsigned long rate,
> -				unsigned long *parent_rate)
> +static unsigned long hdmi_pll_round_rate(struct clk_hw *hw, unsigned long rate,
> +					 unsigned long *parent_rate)
>   {
>   	const struct pll_rate *pll_rate = find_rate(rate);
>   
> diff --git a/drivers/gpu/drm/msm/mdp/mdp4/mdp4_lvds_pll.c b/drivers/gpu/drm/msm/mdp/mdp4/mdp4_lvds_pll.c
> index ce42459..fdbbef3 100644
> --- a/drivers/gpu/drm/msm/mdp/mdp4/mdp4_lvds_pll.c
> +++ b/drivers/gpu/drm/msm/mdp/mdp4/mdp4_lvds_pll.c
> @@ -109,8 +109,9 @@ static unsigned long mpd4_lvds_pll_recalc_rate(struct clk_hw *hw,
>   	return lvds_pll->pixclk;
>   }
>   
> -static long mpd4_lvds_pll_round_rate(struct clk_hw *hw, unsigned long rate,
> -		unsigned long *parent_rate)
> +static unsigned long mpd4_lvds_pll_round_rate(struct clk_hw *hw,
> +					      unsigned long rate,
> +					      unsigned long *parent_rate)
>   {
>   	const struct pll_rate *pll_rate = find_rate(rate);
>   	return pll_rate->rate;
> diff --git a/drivers/gpu/drm/pl111/pl111_display.c b/drivers/gpu/drm/pl111/pl111_display.c
> index 06c4bf7..d7e99d9 100644
> --- a/drivers/gpu/drm/pl111/pl111_display.c
> +++ b/drivers/gpu/drm/pl111/pl111_display.c
> @@ -338,8 +338,9 @@ static int pl111_clk_div_choose_div(struct clk_hw *hw, unsigned long rate,
>   	return best_div;
>   }
>   
> -static long pl111_clk_div_round_rate(struct clk_hw *hw, unsigned long rate,
> -				     unsigned long *prate)
> +static unsigned long pl111_clk_div_round_rate(struct clk_hw *hw,
> +					      unsigned long rate,
> +					      unsigned long *prate)
>   {
>   	int div = pl111_clk_div_choose_div(hw, rate, prate, true);
>   
> diff --git a/drivers/gpu/drm/sun4i/sun4i_dotclock.c b/drivers/gpu/drm/sun4i/sun4i_dotclock.c
> index d401156..4bb7ae7 100644
> --- a/drivers/gpu/drm/sun4i/sun4i_dotclock.c
> +++ b/drivers/gpu/drm/sun4i/sun4i_dotclock.c
> @@ -70,8 +70,9 @@ static unsigned long sun4i_dclk_recalc_rate(struct clk_hw *hw,
>   	return parent_rate / val;
>   }
>   
> -static long sun4i_dclk_round_rate(struct clk_hw *hw, unsigned long rate,
> -				  unsigned long *parent_rate)
> +static unsigned long sun4i_dclk_round_rate(struct clk_hw *hw,
> +					   unsigned long rate,
> +					   unsigned long *parent_rate)
>   {
>   	unsigned long best_parent = 0;
>   	u8 best_div = 1;
> diff --git a/drivers/media/platform/omap3isp/isp.c b/drivers/media/platform/omap3isp/isp.c
> index b7ff384..3461f9d 100644
> --- a/drivers/media/platform/omap3isp/isp.c
> +++ b/drivers/media/platform/omap3isp/isp.c
> @@ -243,8 +243,8 @@ static u32 isp_xclk_calc_divider(unsigned long *rate, unsigned long parent_rate)
>   	return divider;
>   }
>   
> -static long isp_xclk_round_rate(struct clk_hw *hw, unsigned long rate,
> -				unsigned long *parent_rate)
> +static unsigned long isp_xclk_round_rate(struct clk_hw *hw, unsigned long rate,
> +					 unsigned long *parent_rate)
>   {
>   	isp_xclk_calc_divider(&rate, *parent_rate);
>   	return rate;
> diff --git a/drivers/rtc/rtc-ac100.c b/drivers/rtc/rtc-ac100.c
> index 9e33618..0bd0685 100644
> --- a/drivers/rtc/rtc-ac100.c
> +++ b/drivers/rtc/rtc-ac100.c
> @@ -146,8 +146,9 @@ static unsigned long ac100_clkout_recalc_rate(struct clk_hw *hw,
>   				   CLK_DIVIDER_POWER_OF_TWO);
>   }
>   
> -static long ac100_clkout_round_rate(struct clk_hw *hw, unsigned long rate,
> -				    unsigned long prate)
> +static unsigned long ac100_clkout_round_rate(struct clk_hw *hw,
> +					     unsigned long rate,
> +					     unsigned long prate)
>   {
>   	unsigned long best_rate = 0, tmp_rate, tmp_prate;
>   	int i;
> diff --git a/drivers/rtc/rtc-ds1307.c b/drivers/rtc/rtc-ds1307.c
> index 923dde9..d6fb29d 100644
> --- a/drivers/rtc/rtc-ds1307.c
> +++ b/drivers/rtc/rtc-ds1307.c
> @@ -1166,8 +1166,9 @@ static unsigned long ds3231_clk_sqw_recalc_rate(struct clk_hw *hw,
>   	return ds3231_clk_sqw_rates[rate_sel];
>   }
>   
> -static long ds3231_clk_sqw_round_rate(struct clk_hw *hw, unsigned long rate,
> -				      unsigned long *prate)
> +static unsigned long ds3231_clk_sqw_round_rate(struct clk_hw *hw,
> +					       unsigned long rate,
> +					       unsigned long *prate)
>   {
>   	int i;
>   
> diff --git a/drivers/rtc/rtc-hym8563.c b/drivers/rtc/rtc-hym8563.c
> index e5ad527..426b1f7 100644
> --- a/drivers/rtc/rtc-hym8563.c
> +++ b/drivers/rtc/rtc-hym8563.c
> @@ -313,8 +313,9 @@ static unsigned long hym8563_clkout_recalc_rate(struct clk_hw *hw,
>   	return clkout_rates[ret];
>   }
>   
> -static long hym8563_clkout_round_rate(struct clk_hw *hw, unsigned long rate,
> -				      unsigned long *prate)
> +static unsigned long hym8563_clkout_round_rate(struct clk_hw *hw,
> +					       unsigned long rate,
> +					       unsigned long *prate)
>   {
>   	int i;
>   
> diff --git a/drivers/rtc/rtc-m41t80.c b/drivers/rtc/rtc-m41t80.c
> index c90fba3..40a89e3 100644
> --- a/drivers/rtc/rtc-m41t80.c
> +++ b/drivers/rtc/rtc-m41t80.c
> @@ -469,8 +469,9 @@ static unsigned long m41t80_sqw_recalc_rate(struct clk_hw *hw,
>   	return sqw_to_m41t80_data(hw)->freq;
>   }
>   
> -static long m41t80_sqw_round_rate(struct clk_hw *hw, unsigned long rate,
> -				  unsigned long *prate)
> +static unsigned long m41t80_sqw_round_rate(struct clk_hw *hw,
> +					   unsigned long rate,
> +					   unsigned long *prate)
>   {
>   	if (rate >= M41T80_SQW_MAX_FREQ)
>   		return M41T80_SQW_MAX_FREQ;
> diff --git a/drivers/rtc/rtc-pcf8563.c b/drivers/rtc/rtc-pcf8563.c
> index 3efc86c..57b12cb 100644
> --- a/drivers/rtc/rtc-pcf8563.c
> +++ b/drivers/rtc/rtc-pcf8563.c
> @@ -425,8 +425,9 @@ static unsigned long pcf8563_clkout_recalc_rate(struct clk_hw *hw,
>   	return clkout_rates[buf];
>   }
>   
> -static long pcf8563_clkout_round_rate(struct clk_hw *hw, unsigned long rate,
> -				      unsigned long *prate)
> +static unsigned long pcf8563_clkout_round_rate(struct clk_hw *hw,
> +					       unsigned long rate,
> +					       unsigned long *prate)
>   {
>   	int i;
>   
> diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h
> index 7c925e6..79b1d6e 100644
> --- a/include/linux/clk-provider.h
> +++ b/include/linux/clk-provider.h
> @@ -200,8 +200,8 @@ struct clk_ops {
>   	void		(*disable_unused)(struct clk_hw *hw);
>   	unsigned long	(*recalc_rate)(struct clk_hw *hw,
>   					unsigned long parent_rate);
> -	long		(*round_rate)(struct clk_hw *hw, unsigned long rate,
> -					unsigned long *parent_rate);
> +	unsigned long	(*round_rate)(struct clk_hw *hw, unsigned long rate,
> +				      unsigned long *parent_rate);
>   	int		(*determine_rate)(struct clk_hw *hw,
>   					  struct clk_rate_request *req);
>   	int		(*set_parent)(struct clk_hw *hw, u8 index);
> 

Re: [PATCH 01/33] clk_ops: change round_rate() to return unsigned long

[Bryan O'Donoghue]

On 30/12/17 16:36, Mikko Perttunen wrote:
> FWIW, we had this problem some years ago with the Tegra CPU clock - then 
> it was determined that a simpler solution was to have the determine_rate 
> callback support unsigned long rates - so clock drivers that need to 
> return rates higher than 2^31 can instead implement the determine_rate 
> callback. That is what's currently implemented.
> 
> Mikko

Granted we could work around it but, having both zero and less than zero 
indicate error means you can't support larger than LONG_MAX which is I 
think worth fixing.

---
bod

Re: [PATCH 01/33] clk_ops: change round_rate() to return unsigned long

[Stephen Boyd]

On 12/31, Bryan O'Donoghue wrote:
> On 30/12/17 16:36, Mikko Perttunen wrote:
> >FWIW, we had this problem some years ago with the Tegra CPU clock
> >- then it was determined that a simpler solution was to have the
> >determine_rate callback support unsigned long rates - so clock
> >drivers that need to return rates higher than 2^31 can instead
> >implement the determine_rate callback. That is what's currently
> >implemented.
> >
> >Mikko
> 
> Granted we could work around it but, having both zero and less than
> zero indicate error means you can't support larger than LONG_MAX
> which is I think worth fixing.
> 

Ok. But can you implement the determine_rate op instead of the
round_rate op for your clk? It's not a work-around, it's the
preferred solution. That would allow rates larger than 2^31 for
the clk without pushing through a change to all the drivers to
express zero as "error" and non-zero as the rounded rate.

I'm not entirely opposed to this approach, because we probably
don't care to pass the particular error value from a clk provider
to a clk consumer about what the error is. It's actually what we
proposed as the solution for clk_round_rate() to return values
larger than LONG_MAX to consumers. But doing that consumer API
change or this provider side change is going to require us to
evaluate all the consumers of these clks to make sure they don't
check for some error value that's less than zero. This series
does half the work, by changing the provider side, while ignoring
the consumer side and any potential fallout of the less than zero
to zero return value change.

-- 
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project

Re: [PATCH 01/33] clk_ops: change round_rate() to return unsigned long

[Bryan O'Donoghue]

On 02/01/18 19:01, Stephen Boyd wrote:
> On 12/31, Bryan O'Donoghue wrote:
>> On 30/12/17 16:36, Mikko Perttunen wrote:
>>> FWIW, we had this problem some years ago with the Tegra CPU clock
>>> - then it was determined that a simpler solution was to have the
>>> determine_rate callback support unsigned long rates - so clock
>>> drivers that need to return rates higher than 2^31 can instead
>>> implement the determine_rate callback. That is what's currently
>>> implemented.
>>>
>>> Mikko
>>
>> Granted we could work around it but, having both zero and less than
>> zero indicate error means you can't support larger than LONG_MAX
>> which is I think worth fixing.
>>
> 
> Ok. But can you implement the determine_rate op instead of the
> round_rate op for your clk?

Don't know .

> It's not a work-around, it's the
> preferred solution. That would allow rates larger than 2^31 for
> the clk without pushing through a change to all the drivers to
> express zero as "error" and non-zero as the rounded rate.
> 
> I'm not entirely opposed to this approach, because we probably
> don't care to pass the particular error value from a clk provider
> to a clk consumer about what the error is.

Which was my thought. The return value of clk_ops->round_rate() appears 
not to get pushed up the stack, which is what the last patch in this 
series deals with.

[PATCH 33/33] clk: change handling of round_rate() such that only zero 
is an error

> It's actually what we
> proposed as the solution for clk_round_rate() to return values
> larger than LONG_MAX to consumers. But doing that consumer API
> change or this provider side change is going to require us to
> evaluate all the consumers of these clks to make sure they don't
> check for some error value that's less than zero. This series
> does half the work,

Do you mean users of clk_rounda_rate() ? I have a set of patches for 
that but wanted to separate that from clk_ops->round_rate() so as not to 
send ~70 patches out to LKML at once - even if they are in two blocks.

If so, I can publish that set too for reference.

AFAICT on clk_ops->round_rate the last patch #33 ought to cover the 
usage of the return value of clk_ops->round_rate().

Have I missed something ?

> by changing the provider side, while ignoring
> the consumer side and any potential fallout of the less than zero
> to zero return value change.
> 

Can you look at #33 ? I'm not sure if you saw that one.


---
bod

Re: [PATCH 01/33] clk_ops: change round_rate() to return unsigned long

[Stephen Boyd]

On 01/02, Bryan O'Donoghue wrote:
> On 02/01/18 19:01, Stephen Boyd wrote:
> >On 12/31, Bryan O'Donoghue wrote:
> >>On 30/12/17 16:36, Mikko Perttunen wrote:
> >>>FWIW, we had this problem some years ago with the Tegra CPU clock
> >>>- then it was determined that a simpler solution was to have the
> >>>determine_rate callback support unsigned long rates - so clock
> >>>drivers that need to return rates higher than 2^31 can instead
> >>>implement the determine_rate callback. That is what's currently
> >>>implemented.
> >>>
> >>>Mikko
> >>
> >>Granted we could work around it but, having both zero and less than
> >>zero indicate error means you can't support larger than LONG_MAX
> >>which is I think worth fixing.
> >>
> >
> >Ok. But can you implement the determine_rate op instead of the
> >round_rate op for your clk?
> 
> Don't know .

Please try.

> 
> >It's not a work-around, it's the
> >preferred solution. That would allow rates larger than 2^31 for
> >the clk without pushing through a change to all the drivers to
> >express zero as "error" and non-zero as the rounded rate.
> >
> >I'm not entirely opposed to this approach, because we probably
> >don't care to pass the particular error value from a clk provider
> >to a clk consumer about what the error is.
> 
> Which was my thought. The return value of clk_ops->round_rate()
> appears not to get pushed up the stack, which is what the last patch
> in this series deals with.
> 
> [PATCH 33/33] clk: change handling of round_rate() such that only
> zero is an error

Hmm? clk_core_determine_round_nolock() returns 'rate' if rate < 0
from the round_rate op. clk_core_round_rate_nolock() returns that
value to clk_round_rate() which returns it to the consumer.

> 
> >It's actually what we
> >proposed as the solution for clk_round_rate() to return values
> >larger than LONG_MAX to consumers. But doing that consumer API
> >change or this provider side change is going to require us to
> >evaluate all the consumers of these clks to make sure they don't
> >check for some error value that's less than zero. This series
> >does half the work,
> 
> Do you mean users of clk_rounda_rate() ? I have a set of patches for
> that but wanted to separate that from clk_ops->round_rate() so as
> not to send ~70 patches out to LKML at once - even if they are in
> two blocks.

Ok. What have you done to the consumers of clk_round_rate()?
Made them treat 0 as an error instead of less than zero? The
documentation in clk.h needs to be updated. See this patch from
Paul Wamsley[1] for one proposed patch that went nowhere. Also
include Russell King please. It was also proposed to change the
function signature of clk_round_rate() to return unsigned long,
but that didn't go anywhere either.

> 
> If so, I can publish that set too for reference.
> 
> AFAICT on clk_ops->round_rate the last patch #33 ought to cover the
> usage of the return value of clk_ops->round_rate().
> 
> Have I missed something ?

Hopefully not!

> 
> >by changing the provider side, while ignoring
> >the consumer side and any potential fallout of the less than zero
> >to zero return value change.
> >
> 
> Can you look at #33 ? I'm not sure if you saw that one.
> 

Yeah I looked at it. From what I can tell it makes
clk_round_rate() return 0 now instead of whatever negative value
the clk_ops::round_rate function returns.

[1] https://lkml.kernel.org/r/alpine.DEB.2.02.1311251603310.23090@tamien

-- 
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Re: [PATCH 01/33] clk_ops: change round_rate() to return unsigned long

[kbuild test robot]

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Hi Bryan,

I love your patch! Yet something to improve:

[auto build test ERROR on tegra/for-next]
[also build test ERROR on v4.15-rc6]
[cannot apply to clk/clk-next next-20171222]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Bryan-O-Donoghue/change-clk_ops-round_rate-to-scale-past-LONG_MAX/20180101-212907
base:   https://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux.git for-next
config: x86_64-randconfig-x016-201800 (attached as .config)
compiler: gcc-7 (Debian 7.2.0-12) 7.2.1 20171025
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

>> drivers//clk/clk-versaclock5.c:321:16: error: initialization from incompatible pointer type [-Werror=incompatible-pointer-types]
     .round_rate = vc5_dbl_round_rate,
                   ^~~~~~~~~~~~~~~~~~
   drivers//clk/clk-versaclock5.c:321:16: note: (near initialization for 'vc5_dbl_ops.round_rate')
   cc1: some warnings being treated as errors

vim +321 drivers//clk/clk-versaclock5.c

8c1ebe97 Marek Vasut 2017-07-09  318  
8c1ebe97 Marek Vasut 2017-07-09  319  static const struct clk_ops vc5_dbl_ops = {
8c1ebe97 Marek Vasut 2017-07-09  320  	.recalc_rate	= vc5_dbl_recalc_rate,
8c1ebe97 Marek Vasut 2017-07-09 @321  	.round_rate	= vc5_dbl_round_rate,
8c1ebe97 Marek Vasut 2017-07-09  322  	.set_rate	= vc5_dbl_set_rate,
8c1ebe97 Marek Vasut 2017-07-09  323  };
8c1ebe97 Marek Vasut 2017-07-09  324  

:::::: The code at line 321 was first introduced by commit
:::::: 8c1ebe9762670159ca982167131af63c94ff1571 clk: vc5: Add support for the input frequency doubler

:::::: TO: Marek Vasut <marek.vasut@gmail.com>
:::::: CC: Stephen Boyd <sboyd@codeaurora.org>

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

[-- Attachment #2: .config.gz --]
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Re: [PATCH 01/33] clk_ops: change round_rate() to return unsigned long

[kbuild test robot]

[-- Attachment #1: Type: text/plain, Size: 1851 bytes --]

Hi Bryan,

I love your patch! Perhaps something to improve:

[auto build test WARNING on tegra/for-next]
[also build test WARNING on v4.15-rc6]
[cannot apply to clk/clk-next next-20171222]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Bryan-O-Donoghue/change-clk_ops-round_rate-to-scale-past-LONG_MAX/20180101-212907
base:   https://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux.git for-next
config: i386-randconfig-b0-01011934 (attached as .config)
compiler: gcc-4.9 (Debian 4.9.4-2) 4.9.4
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All warnings (new ones prefixed by >>):

>> drivers/clk/clk-versaclock5.c:321:2: warning: initialization from incompatible pointer type
     .round_rate = vc5_dbl_round_rate,
     ^
   drivers/clk/clk-versaclock5.c:321:2: warning: (near initialization for 'vc5_dbl_ops.round_rate')

vim +321 drivers/clk/clk-versaclock5.c

8c1ebe97 Marek Vasut 2017-07-09  318  
8c1ebe97 Marek Vasut 2017-07-09  319  static const struct clk_ops vc5_dbl_ops = {
8c1ebe97 Marek Vasut 2017-07-09  320  	.recalc_rate	= vc5_dbl_recalc_rate,
8c1ebe97 Marek Vasut 2017-07-09 @321  	.round_rate	= vc5_dbl_round_rate,
8c1ebe97 Marek Vasut 2017-07-09  322  	.set_rate	= vc5_dbl_set_rate,
8c1ebe97 Marek Vasut 2017-07-09  323  };
8c1ebe97 Marek Vasut 2017-07-09  324  

:::::: The code at line 321 was first introduced by commit
:::::: 8c1ebe9762670159ca982167131af63c94ff1571 clk: vc5: Add support for the input frequency doubler

:::::: TO: Marek Vasut <marek.vasut@gmail.com>
:::::: CC: Stephen Boyd <sboyd@codeaurora.org>

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

[-- Attachment #2: .config.gz --]
[-- Type: application/gzip, Size: 27230 bytes --]

Re: [PATCH 01/33] clk_ops: change round_rate() to return unsigned long

[kbuild test robot]

Hi Bryan,

I love your patch! Perhaps something to improve:

[auto build test WARNING on tegra/for-next]
[also build test WARNING on v4.15-rc6]
[cannot apply to clk/clk-next next-20171222]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Bryan-O-Donoghue/change-clk_ops-round_rate-to-scale-past-LONG_MAX/20180101-212907
base:   https://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux.git for-next
reproduce:
        # apt-get install sparse
        make ARCH=x86_64 allmodconfig
        make C=1 CF=-D__CHECK_ENDIAN__


sparse warnings: (new ones prefixed by >>)


vim +321 drivers/clk/clk-versaclock5.c

8c1ebe97 Marek Vasut 2017-07-09  318  
8c1ebe97 Marek Vasut 2017-07-09  319  static const struct clk_ops vc5_dbl_ops = {
8c1ebe97 Marek Vasut 2017-07-09  320  	.recalc_rate	= vc5_dbl_recalc_rate,
8c1ebe97 Marek Vasut 2017-07-09 @321  	.round_rate	= vc5_dbl_round_rate,
8c1ebe97 Marek Vasut 2017-07-09  322  	.set_rate	= vc5_dbl_set_rate,
8c1ebe97 Marek Vasut 2017-07-09  323  };
8c1ebe97 Marek Vasut 2017-07-09  324  

:::::: The code at line 321 was first introduced by commit
:::::: 8c1ebe9762670159ca982167131af63c94ff1571 clk: vc5: Add support for the input frequency doubler

:::::: TO: Marek Vasut <marek.vasut@gmail.com>
:::::: CC: Stephen Boyd <sboyd@codeaurora.org>

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation