From: andriy.shevchenko@linux.intel.com (Andy Shevchenko)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 01/14] mfd: intel_quark_i2c_gpio: Use clkdev_create()
Date: Mon, 15 Feb 2016 17:14:06 +0200 [thread overview]
Message-ID: <1455549246.31169.125.camel@linux.intel.com> (raw)
In-Reply-To: <1454982341-22715-2-git-send-email-sboyd@codeaurora.org>
On Mon, 2016-02-08 at 17:45 -0800, Stephen Boyd wrote:
> Convert this driver to use clkdev_create() instead of
> clk_register_clkdevs(). The latter API is only used by this driver,
> although this driver only allocates one clk to add anyway.
> Furthermore, this driver allocates the clk_lookup structure with
> devm, but clkdev_drop() will free that structure when passed,
> leading to a double free when this driver is removed. Clean it
> all up and pave the way for the removal of clk_register_clkdevs().
Good one.
I have still in my local tree the fix regarding to this code since I
found an error in the error path (we don't free clk resources). So, I
will re-base it, although it will require to go with two patches
instead of one if we go to stable.
For this one:
Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
>
> Cc: Lee Jones <lee.jones@linaro.org>
> Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
> Cc: Russell King <linux@arm.linux.org.uk>
> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
> ---
> ?drivers/mfd/intel_quark_i2c_gpio.c | 26 +++++++++-----------------
> ?1 file changed, 9 insertions(+), 17 deletions(-)
>
> diff --git a/drivers/mfd/intel_quark_i2c_gpio.c
> b/drivers/mfd/intel_quark_i2c_gpio.c
> index 042137465300..bdc5e27222c0 100644
> --- a/drivers/mfd/intel_quark_i2c_gpio.c
> +++ b/drivers/mfd/intel_quark_i2c_gpio.c
> @@ -52,8 +52,6 @@
> ?/* The Quark I2C controller source clock */
> ?#define INTEL_QUARK_I2C_CLK_HZ 33000000
> ?
> -#define INTEL_QUARK_I2C_NCLK 1
> -
> ?struct intel_quark_mfd {
> ? struct pci_dev *pdev;
> ? struct clk *i2c_clk;
> @@ -128,30 +126,24 @@ MODULE_DEVICE_TABLE(pci, intel_quark_mfd_ids);
> ?static int intel_quark_register_i2c_clk(struct intel_quark_mfd
> *quark_mfd)
> ?{
> ? struct pci_dev *pdev = quark_mfd->pdev;
> - struct clk_lookup *i2c_clk_lookup;
> ? struct clk *i2c_clk;
> - int ret;
> -
> - i2c_clk_lookup = devm_kcalloc(&pdev->dev,
> INTEL_QUARK_I2C_NCLK,
> - ??????sizeof(*i2c_clk_lookup),
> GFP_KERNEL);
> - if (!i2c_clk_lookup)
> - return -ENOMEM;
> -
> - i2c_clk_lookup[0].dev_id = INTEL_QUARK_I2C_CONTROLLER_CLK;
> ?
> ? i2c_clk = clk_register_fixed_rate(&pdev->dev,
> ? ??INTEL_QUARK_I2C_CONTROLLER
> _CLK, NULL,
> ? ??CLK_IS_ROOT,
> INTEL_QUARK_I2C_CLK_HZ);
> + if (IS_ERR(i2c_clk))
> + return PTR_ERR(i2c_clk);
> ?
> - quark_mfd->i2c_clk_lookup = i2c_clk_lookup;
> ? quark_mfd->i2c_clk = i2c_clk;
> + quark_mfd->i2c_clk_lookup = clkdev_create(i2c_clk, NULL,
> + INTEL_QUARK_I2C_CONT
> ROLLER_CLK);
> ?
> - ret = clk_register_clkdevs(i2c_clk, i2c_clk_lookup,
> - ???INTEL_QUARK_I2C_NCLK);
> - if (ret)
> - dev_err(&pdev->dev, "Fixed clk register failed:
> %d\n", ret);
> + if (!quark_mfd->i2c_clk_lookup) {
> + dev_err(&pdev->dev, "Fixed clk register failed\n");
> + return -ENOMEM;
> + }
> ?
> - return ret;
> + return 0;
> ?}
> ?
> ?static void intel_quark_unregister_i2c_clk(struct pci_dev *pdev)
--
Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Intel Finland Oy
next prev parent reply other threads:[~2016-02-15 15:14 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-09 1:45 [PATCH 00/14] clk_hw based clkdev/DT providers Stephen Boyd
2016-02-09 1:45 ` [PATCH 01/14] mfd: intel_quark_i2c_gpio: Use clkdev_create() Stephen Boyd
2016-02-10 16:23 ` Lee Jones
2016-02-10 18:35 ` Stephen Boyd
2016-02-11 9:09 ` Lee Jones
2016-02-11 11:08 ` Lee Jones
2016-02-15 15:14 ` Andy Shevchenko [this message]
2016-02-15 22:13 ` Michael Turquette
2016-02-09 1:45 ` [PATCH 02/14] clkdev: Remove clk_register_clkdevs() Stephen Boyd
2016-02-15 15:16 ` Andy Shevchenko
2016-02-15 22:12 ` Michael Turquette
2016-02-09 1:45 ` [PATCH 03/14] clk: Add {devm_}clk_hw_{register,unregister}() APIs Stephen Boyd
2016-02-15 22:13 ` [PATCH 03/14] clk: Add {devm_}clk_hw_{register, unregister}() APIs Michael Turquette
2016-02-09 1:45 ` [PATCH 04/14] clk: Add clk_hw OF clk providers Stephen Boyd
2016-02-09 3:31 ` kbuild test robot
2016-02-09 1:45 ` [PATCH 05/14] clkdev: Add clk_hw based registration APIs Stephen Boyd
2016-02-09 1:45 ` [PATCH 06/14] clk: divider: Add hw " Stephen Boyd
2016-02-09 1:45 ` [PATCH 07/14] clk: gate: " Stephen Boyd
2016-02-09 1:45 ` [PATCH 08/14] clk: mux: " Stephen Boyd
2016-02-09 1:45 ` [PATCH 09/14] clk: fixed-factor: " Stephen Boyd
2016-02-09 1:45 ` [PATCH 10/14] clk: fractional-divider: " Stephen Boyd
2016-02-09 1:45 ` [PATCH 11/14] clk: composite: " Stephen Boyd
2016-02-09 1:45 ` [PATCH 12/14] clk: gpio: " Stephen Boyd
2016-02-09 1:45 ` [PATCH 13/14] clk: fixed-rate: " Stephen Boyd
2016-02-09 1:45 ` [PATCH 14/14] clk: qcom: Migrate to clk_hw based registration and OF APIs Stephen Boyd
2016-02-09 5:30 ` kbuild test robot
2016-02-09 8:01 ` kbuild test robot
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