[PATCH v2 00/17] cleanup in spi by use devm_clk_get_enabled

[PATCH v2 00/17] cleanup in spi by use devm_clk_get_enabled

[Pei Xiao]

I know that many old SPI drivers should not be modified for hardware
stability and to reduce maintenance effort. But I can't help cleaning them
up. To minimize the introduction of issues, I tried not to modify the
timing of those hardware clock enables.
---
changes in v2: fix error message but having a line break
Missing error code argument to dev_err_probe()
---
Pei Xiao (17):
  spi: axiado: Use helper function devm_clk_get_enabled()
  spi: bcm63xx-hsspi: Use helper function devm_clk_get_enabled()
  spi: bcmbca-hsspi: Use helper function devm_clk_get_enabled()
  spi: img-spfi: Use helper function devm_clk_get_enabled()
  spi: imx: Use helper function devm_clk_get_enabled()
  spi: npcm-pspi: Use helper function devm_clk_get_enabled()
  spi: orion: Use helper function devm_clk_get_enabled()
  spi: rockchip-sfc: Use helper function devm_clk_get_enabled()
  spi: sifive: Use helper function devm_clk_get_enabled()
  spi: slave-mt27xx: Use helper function devm_clk_get_enabled()
  spi: st: Use helper function devm_clk_get_enabled()
  spi: stm32-qspi: Use helper function devm_clk_get_enabled()
  spi: stm32: Use helper function devm_clk_get_enabled()
  spi: sunplus-sp7021: Use helper function devm_clk_get_enabled()
  spi: uniphier: Use helper function devm_clk_get_enabled()
  spi: zynq-qspi: Use helper function devm_clk_get_enabled()
  spi: zynqmp-gqspi: Use helper function devm_clk_get_enabled()

 drivers/spi/spi-axiado.c         | 23 +++----------
 drivers/spi/spi-bcm63xx-hsspi.c  | 44 +++++++-----------------
 drivers/spi/spi-bcmbca-hsspi.c   | 47 +++++++++-----------------
 drivers/spi/spi-img-spfi.c       | 14 ++------
 drivers/spi/spi-imx.c            | 15 ++-------
 drivers/spi/spi-npcm-pspi.c      | 19 ++++-------
 drivers/spi/spi-orion.c          | 10 ++----
 drivers/spi/spi-rockchip-sfc.c   | 20 ++---------
 drivers/spi/spi-sifive.c         | 20 ++++-------
 drivers/spi/spi-slave-mt27xx.c   |  8 +----
 drivers/spi/spi-st-ssc4.c        | 14 +++-----
 drivers/spi/spi-stm32-qspi.c     | 17 +++-------
 drivers/spi/spi-stm32.c          | 58 ++++++++++----------------------
 drivers/spi/spi-sunplus-sp7021.c | 15 +--------
 drivers/spi/spi-uniphier.c       | 15 +++------
 drivers/spi/spi-zynq-qspi.c      | 28 ++++-----------
 drivers/spi/spi-zynqmp-gqspi.c   | 17 ++--------
 17 files changed, 94 insertions(+), 290 deletions(-)

-- 
2.25.1

[PATCH v2 01/17] spi: axiado: Use helper function devm_clk_get_enabled()

[Pei Xiao]

devm_clk_get() and clk_prepare_enable() can now be replaced by
devm_clk_get_enabled() when driver enables the clocks. Moreover, it is no
longer necessary to unprepare and disable the clocks explicitly.
Simplify code.

Signed-off-by: Pei Xiao <xiaopei01@kylinos.cn>
---
 drivers/spi/spi-axiado.c | 23 ++++-------------------
 1 file changed, 4 insertions(+), 19 deletions(-)

diff --git a/drivers/spi/spi-axiado.c b/drivers/spi/spi-axiado.c
index 8cea81432c5b..4ba8f0e6909f 100644
--- a/drivers/spi/spi-axiado.c
+++ b/drivers/spi/spi-axiado.c
@@ -770,32 +770,20 @@ static int ax_spi_probe(struct platform_device *pdev)
 		goto remove_ctlr;
 	}
 
-	xspi->pclk = devm_clk_get(&pdev->dev, "pclk");
+	xspi->pclk = devm_clk_get_enabled(&pdev->dev, "pclk");
 	if (IS_ERR(xspi->pclk)) {
-		dev_err(&pdev->dev, "pclk clock not found.\n");
+		dev_err(&pdev->dev, "Unable to enable APB clock.\n");
 		ret = PTR_ERR(xspi->pclk);
 		goto remove_ctlr;
 	}
 
-	xspi->ref_clk = devm_clk_get(&pdev->dev, "ref");
+	xspi->ref_clk = devm_clk_get_enabled(&pdev->dev, "ref");
 	if (IS_ERR(xspi->ref_clk)) {
-		dev_err(&pdev->dev, "ref clock not found.\n");
+		dev_err(&pdev->dev, "Unable to enable device clock.\n");
 		ret = PTR_ERR(xspi->ref_clk);
 		goto remove_ctlr;
 	}
 
-	ret = clk_prepare_enable(xspi->pclk);
-	if (ret) {
-		dev_err(&pdev->dev, "Unable to enable APB clock.\n");
-		goto remove_ctlr;
-	}
-
-	ret = clk_prepare_enable(xspi->ref_clk);
-	if (ret) {
-		dev_err(&pdev->dev, "Unable to enable device clock.\n");
-		goto clk_dis_apb;
-	}
-
 	pm_runtime_use_autosuspend(&pdev->dev);
 	pm_runtime_set_autosuspend_delay(&pdev->dev, SPI_AUTOSUSPEND_TIMEOUT);
 	pm_runtime_get_noresume(&pdev->dev);
@@ -866,9 +854,6 @@ static int ax_spi_probe(struct platform_device *pdev)
 clk_dis_all:
 	pm_runtime_set_suspended(&pdev->dev);
 	pm_runtime_disable(&pdev->dev);
-	clk_disable_unprepare(xspi->ref_clk);
-clk_dis_apb:
-	clk_disable_unprepare(xspi->pclk);
 remove_ctlr:
 	spi_controller_put(ctlr);
 	return ret;
-- 
2.25.1

Re: [PATCH v2 01/17] spi: axiado: Use helper function devm_clk_get_enabled()

[Mark Brown]

[-- Attachment #1: Type: text/plain, Size: 580 bytes --]

On Fri, Mar 13, 2026 at 02:08:17PM +0800, Pei Xiao wrote:
> devm_clk_get() and clk_prepare_enable() can now be replaced by
> devm_clk_get_enabled() when driver enables the clocks. Moreover, it is no
> longer necessary to unprepare and disable the clocks explicitly.
> Simplify code.

> -	xspi->pclk = devm_clk_get(&pdev->dev, "pclk");
> +	xspi->pclk = devm_clk_get_enabled(&pdev->dev, "pclk");
>  	if (IS_ERR(xspi->pclk)) {

This doesn't update the remove function which while it doesn't free the
clock does disable it.  Please check all the other patches for similar
issues too.

[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 488 bytes --]

[PATCH v2 02/17] spi: bcm63xx-hsspi: Use helper function devm_clk_get_enabled()

[Pei Xiao]

devm_clk_get() and clk_prepare_enable() can now be replaced by
devm_clk_get_enabled() when driver enables the clocks. Moreover, it is no
longer necessary to unprepare and disable the clocks explicitly.
Simplify code.

Signed-off-by: Pei Xiao <xiaopei01@kylinos.cn>
---
 drivers/spi/spi-bcm63xx-hsspi.c | 44 +++++++++------------------------
 1 file changed, 12 insertions(+), 32 deletions(-)

diff --git a/drivers/spi/spi-bcm63xx-hsspi.c b/drivers/spi/spi-bcm63xx-hsspi.c
index 612f8802e690..f45deb93cbed 100644
--- a/drivers/spi/spi-bcm63xx-hsspi.c
+++ b/drivers/spi/spi-bcm63xx-hsspi.c
@@ -758,8 +758,7 @@ static int bcm63xx_hsspi_probe(struct platform_device *pdev)
 	if (IS_ERR(regs))
 		return PTR_ERR(regs);
 
-	clk = devm_clk_get(dev, "hsspi");
-
+	clk = devm_clk_get_enabled(dev, "hsspi");
 	if (IS_ERR(clk))
 		return PTR_ERR(clk);
 
@@ -767,41 +766,26 @@ static int bcm63xx_hsspi_probe(struct platform_device *pdev)
 	if (IS_ERR(reset))
 		return PTR_ERR(reset);
 
-	ret = clk_prepare_enable(clk);
-	if (ret)
-		return ret;
-
 	ret = reset_control_reset(reset);
-	if (ret) {
-		dev_err(dev, "unable to reset device: %d\n", ret);
-		goto out_disable_clk;
-	}
+	if (ret)
+		return dev_err_probe(dev, ret, "unable to reset device: %d\n", ret);
 
 	rate = clk_get_rate(clk);
 	if (!rate) {
-		pll_clk = devm_clk_get(dev, "pll");
-
-		if (IS_ERR(pll_clk)) {
-			ret = PTR_ERR(pll_clk);
-			goto out_disable_clk;
-		}
-
-		ret = clk_prepare_enable(pll_clk);
-		if (ret)
-			goto out_disable_clk;
+		pll_clk = devm_clk_get_enabled(dev, "pll");
+		if (IS_ERR(pll_clk))
+			return dev_err_probe(dev, PTR_ERR(pll_clk),
+					     "failed enable pll clk\n");
 
 		rate = clk_get_rate(pll_clk);
-		if (!rate) {
-			ret = -EINVAL;
-			goto out_disable_pll_clk;
-		}
+		if (!rate)
+			return dev_err_probe(dev, -EINVAL,
+					     "failed get pll clk rate\n");
 	}
 
 	host = spi_alloc_host(&pdev->dev, sizeof(*bs));
-	if (!host) {
-		ret = -ENOMEM;
-		goto out_disable_pll_clk;
-	}
+	if (!host)
+		return dev_err_probe(dev, -ENOMEM, "alloc host no mem\n");
 
 	bs = spi_controller_get_devdata(host);
 	bs->pdev = pdev;
@@ -887,10 +871,6 @@ static int bcm63xx_hsspi_probe(struct platform_device *pdev)
 	pm_runtime_disable(&pdev->dev);
 out_put_host:
 	spi_controller_put(host);
-out_disable_pll_clk:
-	clk_disable_unprepare(pll_clk);
-out_disable_clk:
-	clk_disable_unprepare(clk);
 	return ret;
 }
 
-- 
2.25.1

[PATCH v2 03/17] spi: bcmbca-hsspi: Use helper function devm_clk_get_enabled()

[Pei Xiao]

devm_clk_get() and clk_prepare_enable() can now be replaced by
devm_clk_get_enabled() when driver enables the clocks. Moreover, it is no
longer necessary to unprepare and disable the clocks explicitly.
Simplify code.

Signed-off-by: Pei Xiao <xiaopei01@kylinos.cn>
---
 drivers/spi/spi-bcmbca-hsspi.c | 47 ++++++++++++----------------------
 1 file changed, 16 insertions(+), 31 deletions(-)

diff --git a/drivers/spi/spi-bcmbca-hsspi.c b/drivers/spi/spi-bcmbca-hsspi.c
index ece22260f570..08d12606e91d 100644
--- a/drivers/spi/spi-bcmbca-hsspi.c
+++ b/drivers/spi/spi-bcmbca-hsspi.c
@@ -452,39 +452,30 @@ static int bcmbca_hsspi_probe(struct platform_device *pdev)
 	if (IS_ERR(spim_ctrl))
 		return PTR_ERR(spim_ctrl);
 
-	clk = devm_clk_get(dev, "hsspi");
+	clk = devm_clk_get_enabled(dev, "hsspi");
 	if (IS_ERR(clk))
-		return PTR_ERR(clk);
-
-	ret = clk_prepare_enable(clk);
-	if (ret)
-		return ret;
+		return dev_err_probe(dev, PTR_ERR(clk),
+				     "Failed to get hsspi clock\n");
 
 	rate = clk_get_rate(clk);
 	if (!rate) {
-		pll_clk = devm_clk_get(dev, "pll");
+		pll_clk = devm_clk_get_enabled(dev, "pll");
 
 		if (IS_ERR(pll_clk)) {
-			ret = PTR_ERR(pll_clk);
-			goto out_disable_clk;
+			return dev_err_probe(dev, PTR_ERR(pll_clk),
+					     "Failed to get pll clock\n");
 		}
 
-		ret = clk_prepare_enable(pll_clk);
-		if (ret)
-			goto out_disable_clk;
-
 		rate = clk_get_rate(pll_clk);
-		if (!rate) {
-			ret = -EINVAL;
-			goto out_disable_pll_clk;
-		}
+		if (!rate)
+			return dev_err_probe(dev, -EINVAL,
+					     "Failed to get pll clock rate\n");
 	}
 
 	host = devm_spi_alloc_host(&pdev->dev, sizeof(*bs));
-	if (!host) {
-		ret = -ENOMEM;
-		goto out_disable_pll_clk;
-	}
+	if (!host)
+		return dev_err_probe(dev, -ENOMEM,
+				     "Failed alloc spi host\n");
 
 	bs = spi_controller_get_devdata(host);
 	bs->pdev = pdev;
@@ -535,18 +526,16 @@ static int bcmbca_hsspi_probe(struct platform_device *pdev)
 		ret = devm_request_irq(dev, irq, bcmbca_hsspi_interrupt, IRQF_SHARED,
 			       pdev->name, bs);
 		if (ret)
-			goto out_disable_pll_clk;
+			return dev_err_probe(dev, ret, "Failed request irq\n");
 	}
 
 	ret = devm_pm_runtime_enable(&pdev->dev);
 	if (ret)
-		goto out_disable_pll_clk;
+		return dev_err_probe(dev, ret, "Failed pm runtime enable\n");
 
 	ret = sysfs_create_group(&pdev->dev.kobj, &bcmbca_hsspi_group);
-	if (ret) {
-		dev_err(&pdev->dev, "couldn't register sysfs group\n");
-		goto out_disable_pll_clk;
-	}
+	if (ret)
+		return dev_err_probe(dev, ret, "couldn't register sysfs group\n");
 
 	/* register and we are done */
 	ret = devm_spi_register_controller(dev, host);
@@ -559,10 +548,6 @@ static int bcmbca_hsspi_probe(struct platform_device *pdev)
 
 out_sysgroup_disable:
 	sysfs_remove_group(&pdev->dev.kobj, &bcmbca_hsspi_group);
-out_disable_pll_clk:
-	clk_disable_unprepare(pll_clk);
-out_disable_clk:
-	clk_disable_unprepare(clk);
 	return ret;
 }
 
-- 
2.25.1

[PATCH v2 04/17] spi: img-spfi: Use helper function devm_clk_get_enabled()

[Pei Xiao]

devm_clk_get() and clk_prepare_enable() can now be replaced by
devm_clk_get_enabled() when driver enables the clocks. Moreover, it is no
longer necessary to unprepare and disable the clocks explicitly.
Simplify code.

Signed-off-by: Pei Xiao <xiaopei01@kylinos.cn>
---
 drivers/spi/spi-img-spfi.c | 14 ++------------
 1 file changed, 2 insertions(+), 12 deletions(-)

diff --git a/drivers/spi/spi-img-spfi.c b/drivers/spi/spi-img-spfi.c
index 902fb64815c9..a227cff5da70 100644
--- a/drivers/spi/spi-img-spfi.c
+++ b/drivers/spi/spi-img-spfi.c
@@ -557,24 +557,17 @@ static int img_spfi_probe(struct platform_device *pdev)
 	if (ret)
 		goto put_spi;
 
-	spfi->sys_clk = devm_clk_get(spfi->dev, "sys");
+	spfi->sys_clk = devm_clk_get_enabled(spfi->dev, "sys");
 	if (IS_ERR(spfi->sys_clk)) {
 		ret = PTR_ERR(spfi->sys_clk);
 		goto put_spi;
 	}
-	spfi->spfi_clk = devm_clk_get(spfi->dev, "spfi");
+	spfi->spfi_clk = devm_clk_get_enabled(spfi->dev, "spfi");
 	if (IS_ERR(spfi->spfi_clk)) {
 		ret = PTR_ERR(spfi->spfi_clk);
 		goto put_spi;
 	}
 
-	ret = clk_prepare_enable(spfi->sys_clk);
-	if (ret)
-		goto put_spi;
-	ret = clk_prepare_enable(spfi->spfi_clk);
-	if (ret)
-		goto disable_pclk;
-
 	spfi_reset(spfi);
 	/*
 	 * Only enable the error (IACCESS) interrupt.  In PIO mode we'll
@@ -655,9 +648,6 @@ static int img_spfi_probe(struct platform_device *pdev)
 		dma_release_channel(spfi->rx_ch);
 	if (spfi->tx_ch)
 		dma_release_channel(spfi->tx_ch);
-	clk_disable_unprepare(spfi->spfi_clk);
-disable_pclk:
-	clk_disable_unprepare(spfi->sys_clk);
 put_spi:
 	spi_controller_put(host);
 
-- 
2.25.1

[PATCH v2 05/17] spi: imx: Use helper function devm_clk_get_enabled()

[Pei Xiao]

devm_clk_get() and clk_prepare_enable() can now be replaced by
devm_clk_get_enabled() when driver enables the clocks. Moreover, it is no
longer necessary to unprepare and disable the clocks explicitly.
Simplify code.

Signed-off-by: Pei Xiao <xiaopei01@kylinos.cn>
---
 drivers/spi/spi-imx.c | 15 ++-------------
 1 file changed, 2 insertions(+), 13 deletions(-)

diff --git a/drivers/spi/spi-imx.c b/drivers/spi/spi-imx.c
index 64c6c09e1e7b..a01c466818de 100644
--- a/drivers/spi/spi-imx.c
+++ b/drivers/spi/spi-imx.c
@@ -2323,26 +2323,18 @@ static int spi_imx_probe(struct platform_device *pdev)
 		goto out_controller_put;
 	}
 
-	spi_imx->clk_ipg = devm_clk_get(&pdev->dev, "ipg");
+	spi_imx->clk_ipg = devm_clk_get_enabled(&pdev->dev, "ipg");
 	if (IS_ERR(spi_imx->clk_ipg)) {
 		ret = PTR_ERR(spi_imx->clk_ipg);
 		goto out_controller_put;
 	}
 
-	spi_imx->clk_per = devm_clk_get(&pdev->dev, "per");
+	spi_imx->clk_per = devm_clk_get_enabled(&pdev->dev, "per");
 	if (IS_ERR(spi_imx->clk_per)) {
 		ret = PTR_ERR(spi_imx->clk_per);
 		goto out_controller_put;
 	}
 
-	ret = clk_prepare_enable(spi_imx->clk_per);
-	if (ret)
-		goto out_controller_put;
-
-	ret = clk_prepare_enable(spi_imx->clk_ipg);
-	if (ret)
-		goto out_put_per;
-
 	pm_runtime_set_autosuspend_delay(spi_imx->dev, MXC_RPM_TIMEOUT);
 	pm_runtime_use_autosuspend(spi_imx->dev);
 	pm_runtime_get_noresume(spi_imx->dev);
@@ -2386,9 +2378,6 @@ static int spi_imx_probe(struct platform_device *pdev)
 	pm_runtime_disable(spi_imx->dev);
 	pm_runtime_set_suspended(&pdev->dev);
 
-	clk_disable_unprepare(spi_imx->clk_ipg);
-out_put_per:
-	clk_disable_unprepare(spi_imx->clk_per);
 out_controller_put:
 	spi_controller_put(controller);
 
-- 
2.25.1

[PATCH v2 06/17] spi: npcm-pspi: Use helper function devm_clk_get_enabled()

[Pei Xiao]

devm_clk_get() and clk_prepare_enable() can now be replaced by
devm_clk_get_enabled() when driver enables the clocks. Moreover, it is no
longer necessary to unprepare and disable the clocks explicitly.
Simplify code.

Signed-off-by: Pei Xiao <xiaopei01@kylinos.cn>
---
 drivers/spi/spi-npcm-pspi.c | 19 ++++++-------------
 1 file changed, 6 insertions(+), 13 deletions(-)

diff --git a/drivers/spi/spi-npcm-pspi.c b/drivers/spi/spi-npcm-pspi.c
index e60b3cc398ec..99fa866f4efc 100644
--- a/drivers/spi/spi-npcm-pspi.c
+++ b/drivers/spi/spi-npcm-pspi.c
@@ -361,27 +361,23 @@ static int npcm_pspi_probe(struct platform_device *pdev)
 		goto out_host_put;
 	}
 
-	priv->clk = devm_clk_get(&pdev->dev, NULL);
+	priv->clk = devm_clk_get_enabled(&pdev->dev, NULL);
 	if (IS_ERR(priv->clk)) {
-		dev_err(&pdev->dev, "failed to get clock\n");
+		dev_err(&pdev->dev, "failed to enable clock\n");
 		ret = PTR_ERR(priv->clk);
 		goto out_host_put;
 	}
 
-	ret = clk_prepare_enable(priv->clk);
-	if (ret)
-		goto out_host_put;
-
 	irq = platform_get_irq(pdev, 0);
 	if (irq < 0) {
 		ret = irq;
-		goto out_disable_clk;
+		goto out_host_put;
 	}
 
 	priv->reset = devm_reset_control_get(&pdev->dev, NULL);
 	if (IS_ERR(priv->reset)) {
 		ret = PTR_ERR(priv->reset);
-		goto out_disable_clk;
+		goto out_host_put;
 	}
 
 	/* reset SPI-HW block */
@@ -391,7 +387,7 @@ static int npcm_pspi_probe(struct platform_device *pdev)
 			       "npcm-pspi", priv);
 	if (ret) {
 		dev_err(&pdev->dev, "failed to request IRQ\n");
-		goto out_disable_clk;
+		goto out_host_put;
 	}
 
 	init_completion(&priv->xfer_done);
@@ -415,15 +411,12 @@ static int npcm_pspi_probe(struct platform_device *pdev)
 
 	ret = devm_spi_register_controller(&pdev->dev, host);
 	if (ret)
-		goto out_disable_clk;
+		goto out_host_put;
 
 	pr_info("NPCM Peripheral SPI %d probed\n", host->bus_num);
 
 	return 0;
 
-out_disable_clk:
-	clk_disable_unprepare(priv->clk);
-
 out_host_put:
 	spi_controller_put(host);
 	return ret;
-- 
2.25.1

[PATCH v2 07/17] spi: orion: Use helper function devm_clk_get_enabled()

[Pei Xiao]

devm_clk_get() and clk_prepare_enable() can now be replaced by
devm_clk_get_enabled() when driver enables the clocks. Moreover, it is no
longer necessary to unprepare and disable the clocks explicitly.
Simplify code.

Signed-off-by: Pei Xiao <xiaopei01@kylinos.cn>
---
 drivers/spi/spi-orion.c | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/drivers/spi/spi-orion.c b/drivers/spi/spi-orion.c
index 7a2186b51b4c..69e41421dc88 100644
--- a/drivers/spi/spi-orion.c
+++ b/drivers/spi/spi-orion.c
@@ -695,13 +695,11 @@ static int orion_spi_probe(struct platform_device *pdev)
 	}
 
 	/* The following clock is only used by some SoCs */
-	spi->axi_clk = devm_clk_get(&pdev->dev, "axi");
+	spi->axi_clk = devm_clk_get_enabled(&pdev->dev, "axi");
 	if (PTR_ERR(spi->axi_clk) == -EPROBE_DEFER) {
 		status = -EPROBE_DEFER;
 		goto out;
 	}
-	if (!IS_ERR(spi->axi_clk))
-		clk_prepare_enable(spi->axi_clk);
 
 	tclk_hz = clk_get_rate(spi->clk);
 
@@ -726,7 +724,7 @@ static int orion_spi_probe(struct platform_device *pdev)
 	spi->base = devm_platform_get_and_ioremap_resource(pdev, 0, &r);
 	if (IS_ERR(spi->base)) {
 		status = PTR_ERR(spi->base);
-		goto out_rel_axi_clk;
+		goto out;
 	}
 
 	for_each_available_child_of_node(pdev->dev.of_node, np) {
@@ -764,7 +762,7 @@ static int orion_spi_probe(struct platform_device *pdev)
 		if (!dir_acc->vaddr) {
 			status = -ENOMEM;
 			of_node_put(np);
-			goto out_rel_axi_clk;
+			goto out;
 		}
 		dir_acc->size = PAGE_SIZE;
 
@@ -788,8 +786,6 @@ static int orion_spi_probe(struct platform_device *pdev)
 
 out_rel_pm:
 	pm_runtime_disable(&pdev->dev);
-out_rel_axi_clk:
-	clk_disable_unprepare(spi->axi_clk);
 out:
 	spi_controller_put(host);
 	return status;
-- 
2.25.1

[PATCH v2 08/17] spi: rockchip-sfc: Use helper function devm_clk_get_enabled()

[Pei Xiao]

devm_clk_get() and clk_prepare_enable() can now be replaced by
devm_clk_get_enabled() when driver enables the clocks. Moreover, it is no
longer necessary to unprepare and disable the clocks explicitly.
Simplify code.

Signed-off-by: Pei Xiao <xiaopei01@kylinos.cn>
---
 drivers/spi/spi-rockchip-sfc.c | 20 ++------------------
 1 file changed, 2 insertions(+), 18 deletions(-)

diff --git a/drivers/spi/spi-rockchip-sfc.c b/drivers/spi/spi-rockchip-sfc.c
index 174995042f53..ef6956f2c918 100644
--- a/drivers/spi/spi-rockchip-sfc.c
+++ b/drivers/spi/spi-rockchip-sfc.c
@@ -635,13 +635,13 @@ static int rockchip_sfc_probe(struct platform_device *pdev)
 		return PTR_ERR(sfc->regbase);
 
 	if (!has_acpi_companion(&pdev->dev))
-		sfc->clk = devm_clk_get(&pdev->dev, "clk_sfc");
+		sfc->clk = devm_clk_get_enabled(&pdev->dev, "clk_sfc");
 	if (IS_ERR(sfc->clk))
 		return dev_err_probe(&pdev->dev, PTR_ERR(sfc->clk),
 				     "Failed to get sfc interface clk\n");
 
 	if (!has_acpi_companion(&pdev->dev))
-		sfc->hclk = devm_clk_get(&pdev->dev, "hclk_sfc");
+		sfc->hclk = devm_clk_get_enabled(&pdev->dev, "hclk_sfc");
 	if (IS_ERR(sfc->hclk))
 		return dev_err_probe(&pdev->dev, PTR_ERR(sfc->hclk),
 				     "Failed to get sfc ahb clk\n");
@@ -657,18 +657,6 @@ static int rockchip_sfc_probe(struct platform_device *pdev)
 
 	sfc->use_dma = !of_property_read_bool(sfc->dev->of_node, "rockchip,sfc-no-dma");
 
-	ret = clk_prepare_enable(sfc->hclk);
-	if (ret) {
-		dev_err(&pdev->dev, "Failed to enable ahb clk\n");
-		goto err_hclk;
-	}
-
-	ret = clk_prepare_enable(sfc->clk);
-	if (ret) {
-		dev_err(&pdev->dev, "Failed to enable interface clk\n");
-		goto err_clk;
-	}
-
 	/* Find the irq */
 	ret = platform_get_irq(pdev, 0);
 	if (ret < 0)
@@ -730,10 +718,6 @@ static int rockchip_sfc_probe(struct platform_device *pdev)
 	pm_runtime_set_suspended(dev);
 	pm_runtime_dont_use_autosuspend(dev);
 err_irq:
-	clk_disable_unprepare(sfc->clk);
-err_clk:
-	clk_disable_unprepare(sfc->hclk);
-err_hclk:
 	return ret;
 }
 
-- 
2.25.1

[PATCH v2 09/17] spi: sifive: Use helper function devm_clk_get_enabled()

[Pei Xiao]

devm_clk_get() and clk_prepare_enable() can now be replaced by
devm_clk_get_enabled() when driver enables the clocks. Moreover, it is no
longer necessary to unprepare and disable the clocks explicitly.
Simplify code.

Signed-off-by: Pei Xiao <xiaopei01@kylinos.cn>
---
 drivers/spi/spi-sifive.c | 20 ++++++--------------
 1 file changed, 6 insertions(+), 14 deletions(-)

diff --git a/drivers/spi/spi-sifive.c b/drivers/spi/spi-sifive.c
index 6c7aba8befa0..3d45105f2e41 100644
--- a/drivers/spi/spi-sifive.c
+++ b/drivers/spi/spi-sifive.c
@@ -312,7 +312,8 @@ static int sifive_spi_probe(struct platform_device *pdev)
 		goto put_host;
 	}
 
-	spi->clk = devm_clk_get(&pdev->dev, NULL);
+	/* Spin up the bus clock before hitting registers */
+	spi->clk = devm_clk_get_enabled(&pdev->dev, NULL);
 	if (IS_ERR(spi->clk)) {
 		dev_err(&pdev->dev, "Unable to find bus clock\n");
 		ret = PTR_ERR(spi->clk);
@@ -342,13 +343,6 @@ static int sifive_spi_probe(struct platform_device *pdev)
 		goto put_host;
 	}
 
-	/* Spin up the bus clock before hitting registers */
-	ret = clk_prepare_enable(spi->clk);
-	if (ret) {
-		dev_err(&pdev->dev, "Unable to enable bus clock\n");
-		goto put_host;
-	}
-
 	/* probe the number of CS lines */
 	spi->cs_inactive = sifive_spi_read(spi, SIFIVE_SPI_REG_CSDEF);
 	sifive_spi_write(spi, SIFIVE_SPI_REG_CSDEF, 0xffffffffU);
@@ -357,14 +351,14 @@ static int sifive_spi_probe(struct platform_device *pdev)
 	if (!cs_bits) {
 		dev_err(&pdev->dev, "Could not auto probe CS lines\n");
 		ret = -EINVAL;
-		goto disable_clk;
+		goto put_host;
 	}
 
 	num_cs = ilog2(cs_bits) + 1;
 	if (num_cs > SIFIVE_SPI_MAX_CS) {
 		dev_err(&pdev->dev, "Invalid number of spi targets\n");
 		ret = -EINVAL;
-		goto disable_clk;
+		goto put_host;
 	}
 
 	/* Define our host */
@@ -392,7 +386,7 @@ static int sifive_spi_probe(struct platform_device *pdev)
 			       dev_name(&pdev->dev), spi);
 	if (ret) {
 		dev_err(&pdev->dev, "Unable to bind to interrupt\n");
-		goto disable_clk;
+		goto put_host;
 	}
 
 	dev_info(&pdev->dev, "mapped; irq=%d, cs=%d\n",
@@ -401,13 +395,11 @@ static int sifive_spi_probe(struct platform_device *pdev)
 	ret = devm_spi_register_controller(&pdev->dev, host);
 	if (ret < 0) {
 		dev_err(&pdev->dev, "spi_register_host failed\n");
-		goto disable_clk;
+		goto put_host;
 	}
 
 	return 0;
 
-disable_clk:
-	clk_disable_unprepare(spi->clk);
 put_host:
 	spi_controller_put(host);
 
-- 
2.25.1

[PATCH v2 10/17] spi: slave-mt27xx: Use helper function devm_clk_get_enabled()

[Pei Xiao]

devm_clk_get() and clk_prepare_enable() can now be replaced by
devm_clk_get_enabled() when driver enables the clocks. Moreover, it is no
longer necessary to unprepare and disable the clocks explicitly.
Simplify code.

Signed-off-by: Pei Xiao <xiaopei01@kylinos.cn>
---
 drivers/spi/spi-slave-mt27xx.c | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/drivers/spi/spi-slave-mt27xx.c b/drivers/spi/spi-slave-mt27xx.c
index ce889cb33228..8ec886918165 100644
--- a/drivers/spi/spi-slave-mt27xx.c
+++ b/drivers/spi/spi-slave-mt27xx.c
@@ -438,19 +438,13 @@ static int mtk_spi_slave_probe(struct platform_device *pdev)
 		goto err_put_ctlr;
 	}
 
-	mdata->spi_clk = devm_clk_get(&pdev->dev, "spi");
+	mdata->spi_clk = devm_clk_get_enabled(&pdev->dev, "spi");
 	if (IS_ERR(mdata->spi_clk)) {
 		ret = PTR_ERR(mdata->spi_clk);
 		dev_err(&pdev->dev, "failed to get spi-clk: %d\n", ret);
 		goto err_put_ctlr;
 	}
 
-	ret = clk_prepare_enable(mdata->spi_clk);
-	if (ret < 0) {
-		dev_err(&pdev->dev, "failed to enable spi_clk (%d)\n", ret);
-		goto err_put_ctlr;
-	}
-
 	pm_runtime_enable(&pdev->dev);
 
 	ret = devm_spi_register_controller(&pdev->dev, ctlr);
-- 
2.25.1

[PATCH v2 11/17] spi: st: Use helper function devm_clk_get_enabled()

[Pei Xiao]

devm_clk_get() and clk_prepare_enable() can now be replaced by
devm_clk_get_enabled() when driver enables the clocks. Moreover, it is no
longer necessary to unprepare and disable the clocks explicitly.
Simplify code.

Signed-off-by: Pei Xiao <xiaopei01@kylinos.cn>
---
 drivers/spi/spi-st-ssc4.c | 14 ++++----------
 1 file changed, 4 insertions(+), 10 deletions(-)

diff --git a/drivers/spi/spi-st-ssc4.c b/drivers/spi/spi-st-ssc4.c
index b173ef70d77e..e7237082abbc 100644
--- a/drivers/spi/spi-st-ssc4.c
+++ b/drivers/spi/spi-st-ssc4.c
@@ -293,24 +293,20 @@ static int spi_st_probe(struct platform_device *pdev)
 	host->use_gpio_descriptors	= true;
 	spi_st				= spi_controller_get_devdata(host);
 
-	spi_st->clk = devm_clk_get(&pdev->dev, "ssc");
+	spi_st->clk = devm_clk_get_enabled(&pdev->dev, "ssc");
 	if (IS_ERR(spi_st->clk)) {
 		dev_err(&pdev->dev, "Unable to request clock\n");
 		ret = PTR_ERR(spi_st->clk);
 		goto put_host;
 	}
 
-	ret = clk_prepare_enable(spi_st->clk);
-	if (ret)
-		goto put_host;
-
 	init_completion(&spi_st->done);
 
 	/* Get resources */
 	spi_st->base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(spi_st->base)) {
 		ret = PTR_ERR(spi_st->base);
-		goto clk_disable;
+		goto put_host;
 	}
 
 	/* Disable I2C and Reset SSC */
@@ -333,14 +329,14 @@ static int spi_st_probe(struct platform_device *pdev)
 	if (!irq) {
 		dev_err(&pdev->dev, "IRQ missing or invalid\n");
 		ret = -EINVAL;
-		goto clk_disable;
+		goto put_host;
 	}
 
 	ret = devm_request_irq(&pdev->dev, irq, spi_st_irq, 0,
 			       pdev->name, spi_st);
 	if (ret) {
 		dev_err(&pdev->dev, "Failed to request irq %d\n", irq);
-		goto clk_disable;
+		goto put_host;
 	}
 
 	/* by default the device is on */
@@ -359,8 +355,6 @@ static int spi_st_probe(struct platform_device *pdev)
 
 rpm_disable:
 	pm_runtime_disable(&pdev->dev);
-clk_disable:
-	clk_disable_unprepare(spi_st->clk);
 put_host:
 	spi_controller_put(host);
 	return ret;
-- 
2.25.1

[PATCH v2 12/17] spi: stm32-qspi: Use helper function devm_clk_get_enabled()

[Pei Xiao]

devm_clk_get() and clk_prepare_enable() can now be replaced by
devm_clk_get_enabled() when driver enables the clocks. Moreover, it is no
longer necessary to unprepare and disable the clocks explicitly.
Simplify code.

Signed-off-by: Pei Xiao <xiaopei01@kylinos.cn>
---
 drivers/spi/spi-stm32-qspi.c | 17 +++++------------
 1 file changed, 5 insertions(+), 12 deletions(-)

diff --git a/drivers/spi/spi-stm32-qspi.c b/drivers/spi/spi-stm32-qspi.c
index df1bbacec90a..9ff9975edef4 100644
--- a/drivers/spi/spi-stm32-qspi.c
+++ b/drivers/spi/spi-stm32-qspi.c
@@ -819,25 +819,19 @@ static int stm32_qspi_probe(struct platform_device *pdev)
 
 	init_completion(&qspi->match_completion);
 
-	qspi->clk = devm_clk_get(dev, NULL);
+	qspi->clk = devm_clk_get_enabled(dev, NULL);
 	if (IS_ERR(qspi->clk))
-		return PTR_ERR(qspi->clk);
-
+		return dev_err_probe(dev, PTR_ERR(qspi->clk),
+				     "can not enable the clock\n");
 	qspi->clk_rate = clk_get_rate(qspi->clk);
 	if (!qspi->clk_rate)
 		return -EINVAL;
 
-	ret = clk_prepare_enable(qspi->clk);
-	if (ret) {
-		dev_err(dev, "can not enable the clock\n");
-		return ret;
-	}
-
 	rstc = devm_reset_control_get_exclusive(dev, NULL);
 	if (IS_ERR(rstc)) {
 		ret = PTR_ERR(rstc);
 		if (ret == -EPROBE_DEFER)
-			goto err_clk_disable;
+			goto err_defer;
 	} else {
 		reset_control_assert(rstc);
 		udelay(2);
@@ -886,8 +880,7 @@ static int stm32_qspi_probe(struct platform_device *pdev)
 	pm_runtime_dont_use_autosuspend(qspi->dev);
 err_dma_free:
 	stm32_qspi_dma_free(qspi);
-err_clk_disable:
-	clk_disable_unprepare(qspi->clk);
+err_defer:
 
 	return ret;
 }
-- 
2.25.1

[PATCH v2 13/17] spi: stm32: Use helper function devm_clk_get_enabled()

[Pei Xiao]

devm_clk_get() and clk_prepare_enable() can now be replaced by
devm_clk_get_enabled() when driver enables the clocks. Moreover, it is no
longer necessary to unprepare and disable the clocks explicitly.
Simplify code.

Signed-off-by: Pei Xiao <xiaopei01@kylinos.cn>
---
 drivers/spi/spi-stm32.c | 58 +++++++++++++----------------------------
 1 file changed, 18 insertions(+), 40 deletions(-)

diff --git a/drivers/spi/spi-stm32.c b/drivers/spi/spi-stm32.c
index 8a7f5a10d4af..9f82540a582c 100644
--- a/drivers/spi/spi-stm32.c
+++ b/drivers/spi/spi-stm32.c
@@ -2360,25 +2360,21 @@ static int stm32_spi_probe(struct platform_device *pdev)
 	int ret;
 
 	cfg = of_device_get_match_data(&pdev->dev);
-	if (!cfg) {
-		dev_err(&pdev->dev, "Failed to get match data for platform\n");
-		return -ENODEV;
-	}
+	if (!cfg)
+		return dev_err_probe(&pdev->dev, -ENODEV,
+				     "Failed to get match data for platform\n");
 
 	device_mode = of_property_read_bool(np, "spi-slave");
-	if (!cfg->has_device_mode && device_mode) {
-		dev_err(&pdev->dev, "spi-slave not supported\n");
-		return -EPERM;
-	}
+	if (!cfg->has_device_mode && device_mode)
+		return dev_err_probe(&pdev->dev, -EPERM, "spi-slave not supported\n");
 
 	if (device_mode)
 		ctrl = devm_spi_alloc_target(&pdev->dev, sizeof(struct stm32_spi));
 	else
 		ctrl = devm_spi_alloc_host(&pdev->dev, sizeof(struct stm32_spi));
-	if (!ctrl) {
-		dev_err(&pdev->dev, "spi controller allocation failed\n");
-		return -ENOMEM;
-	}
+	if (!ctrl)
+		return dev_err_probe(&pdev->dev, -ENOMEM,
+				     "spi controller allocation failed\n");
 	platform_set_drvdata(pdev, ctrl);
 
 	spi = spi_controller_get_devdata(ctrl);
@@ -2409,32 +2405,19 @@ static int stm32_spi_probe(struct platform_device *pdev)
 		return ret;
 	}
 
-	spi->clk = devm_clk_get(&pdev->dev, NULL);
-	if (IS_ERR(spi->clk)) {
-		ret = PTR_ERR(spi->clk);
-		dev_err(&pdev->dev, "clk get failed: %d\n", ret);
-		return ret;
-	}
+	spi->clk = devm_clk_get_enabled(&pdev->dev, NULL);
+	if (IS_ERR(spi->clk))
+		return dev_err_probe(&pdev->dev, PTR_ERR(spi->clk), "clk enabled failed\n");
 
-	ret = clk_prepare_enable(spi->clk);
-	if (ret) {
-		dev_err(&pdev->dev, "clk enable failed: %d\n", ret);
-		return ret;
-	}
 	spi->clk_rate = clk_get_rate(spi->clk);
-	if (!spi->clk_rate) {
-		dev_err(&pdev->dev, "clk rate = 0\n");
-		ret = -EINVAL;
-		goto err_clk_disable;
-	}
+	if (!spi->clk_rate)
+		return dev_err_probe(&pdev->dev, -EINVAL, "clk rate = 0\n");
 
 	rst = devm_reset_control_get_optional_exclusive(&pdev->dev, NULL);
 	if (rst) {
-		if (IS_ERR(rst)) {
+		if (IS_ERR(rst))
 			ret = dev_err_probe(&pdev->dev, PTR_ERR(rst),
 					    "failed to get reset\n");
-			goto err_clk_disable;
-		}
 
 		reset_control_assert(rst);
 		udelay(2);
@@ -2461,11 +2444,9 @@ static int stm32_spi_probe(struct platform_device *pdev)
 	dev_dbg(spi->dev, "one message max size %d\n", spi->t_size_max);
 
 	ret = spi->cfg->config(spi);
-	if (ret) {
-		dev_err(&pdev->dev, "controller configuration failed: %d\n",
-			ret);
-		goto err_clk_disable;
-	}
+	if (ret)
+		return dev_err_probe(&pdev->dev, ret,
+				     "controller configuration failed: %d\n", ret);
 
 	ctrl->auto_runtime_pm = true;
 	ctrl->bus_num = pdev->id;
@@ -2490,8 +2471,7 @@ static int stm32_spi_probe(struct platform_device *pdev)
 			dev_info(&pdev->dev, "tx dma disabled\n");
 			spi->dma_tx = NULL;
 		} else {
-			dev_err_probe(&pdev->dev, ret, "failed to request tx dma channel\n");
-			goto err_clk_disable;
+			return dev_err_probe(&pdev->dev, ret, "failed to request tx dma channel\n");
 		}
 	} else {
 		ctrl->dma_tx = spi->dma_tx;
@@ -2579,8 +2559,6 @@ static int stm32_spi_probe(struct platform_device *pdev)
 err_dma_tx_release:
 	if (spi->dma_tx)
 		dma_release_channel(spi->dma_tx);
-err_clk_disable:
-	clk_disable_unprepare(spi->clk);
 
 	return ret;
 }
-- 
2.25.1

[PATCH v2 14/17] spi: sunplus-sp7021: Use helper function devm_clk_get_enabled()

[Pei Xiao]

devm_clk_get() and clk_prepare_enable() can now be replaced by
devm_clk_get_enabled() when driver enables the clocks. Moreover, it is no
longer necessary to unprepare and disable the clocks explicitly.
Simplify code.

Signed-off-by: Pei Xiao <xiaopei01@kylinos.cn>
---
 drivers/spi/spi-sunplus-sp7021.c | 15 +--------------
 1 file changed, 1 insertion(+), 14 deletions(-)

diff --git a/drivers/spi/spi-sunplus-sp7021.c b/drivers/spi/spi-sunplus-sp7021.c
index 789b092fe8c0..35601212fb78 100644
--- a/drivers/spi/spi-sunplus-sp7021.c
+++ b/drivers/spi/spi-sunplus-sp7021.c
@@ -389,11 +389,6 @@ static int sp7021_spi_target_transfer_one(struct spi_controller *ctlr, struct sp
 	return ret;
 }
 
-static void sp7021_spi_disable_unprepare(void *data)
-{
-	clk_disable_unprepare(data);
-}
-
 static void sp7021_spi_reset_control_assert(void *data)
 {
 	reset_control_assert(data);
@@ -460,7 +455,7 @@ static int sp7021_spi_controller_probe(struct platform_device *pdev)
 	if (pspim->s_irq < 0)
 		return pspim->s_irq;
 
-	pspim->spi_clk = devm_clk_get(dev, NULL);
+	pspim->spi_clk = devm_clk_get_enabled(dev, NULL);
 	if (IS_ERR(pspim->spi_clk))
 		return dev_err_probe(dev, PTR_ERR(pspim->spi_clk), "clk get fail\n");
 
@@ -468,14 +463,6 @@ static int sp7021_spi_controller_probe(struct platform_device *pdev)
 	if (IS_ERR(pspim->rstc))
 		return dev_err_probe(dev, PTR_ERR(pspim->rstc), "rst get fail\n");
 
-	ret = clk_prepare_enable(pspim->spi_clk);
-	if (ret)
-		return dev_err_probe(dev, ret, "failed to enable clk\n");
-
-	ret = devm_add_action_or_reset(dev, sp7021_spi_disable_unprepare, pspim->spi_clk);
-	if (ret)
-		return ret;
-
 	ret = reset_control_deassert(pspim->rstc);
 	if (ret)
 		return dev_err_probe(dev, ret, "failed to deassert reset\n");
-- 
2.25.1

[PATCH v2 15/17] spi: uniphier: Use helper function devm_clk_get_enabled()

[Pei Xiao]

devm_clk_get() and clk_prepare_enable() can now be replaced by
devm_clk_get_enabled() when driver enables the clocks. Moreover, it is no
longer necessary to unprepare and disable the clocks explicitly.
Simplify code.

Signed-off-by: Pei Xiao <xiaopei01@kylinos.cn>
---
 drivers/spi/spi-uniphier.c | 15 ++++-----------
 1 file changed, 4 insertions(+), 11 deletions(-)

diff --git a/drivers/spi/spi-uniphier.c b/drivers/spi/spi-uniphier.c
index 9e1d364a6198..f6fe5ab9f893 100644
--- a/drivers/spi/spi-uniphier.c
+++ b/drivers/spi/spi-uniphier.c
@@ -666,28 +666,24 @@ static int uniphier_spi_probe(struct platform_device *pdev)
 	}
 	priv->base_dma_addr = res->start;
 
-	priv->clk = devm_clk_get(&pdev->dev, NULL);
+	priv->clk = devm_clk_get_enabled(&pdev->dev, NULL);
 	if (IS_ERR(priv->clk)) {
 		dev_err(&pdev->dev, "failed to get clock\n");
 		ret = PTR_ERR(priv->clk);
 		goto out_host_put;
 	}
 
-	ret = clk_prepare_enable(priv->clk);
-	if (ret)
-		goto out_host_put;
-
 	irq = platform_get_irq(pdev, 0);
 	if (irq < 0) {
 		ret = irq;
-		goto out_disable_clk;
+		goto out_host_put;
 	}
 
 	ret = devm_request_irq(&pdev->dev, irq, uniphier_spi_handler,
 			       0, "uniphier-spi", priv);
 	if (ret) {
 		dev_err(&pdev->dev, "failed to request IRQ\n");
-		goto out_disable_clk;
+		goto out_host_put;
 	}
 
 	init_completion(&priv->xfer_done);
@@ -716,7 +712,7 @@ static int uniphier_spi_probe(struct platform_device *pdev)
 	if (IS_ERR_OR_NULL(host->dma_tx)) {
 		if (PTR_ERR(host->dma_tx) == -EPROBE_DEFER) {
 			ret = -EPROBE_DEFER;
-			goto out_disable_clk;
+			goto out_host_put;
 		}
 		host->dma_tx = NULL;
 		dma_tx_burst = INT_MAX;
@@ -766,9 +762,6 @@ static int uniphier_spi_probe(struct platform_device *pdev)
 		host->dma_tx = NULL;
 	}
 
-out_disable_clk:
-	clk_disable_unprepare(priv->clk);
-
 out_host_put:
 	spi_controller_put(host);
 	return ret;
-- 
2.25.1

[PATCH v2 16/17] spi: zynq-qspi: Use helper function devm_clk_get_enabled()

[Pei Xiao]

devm_clk_get() and clk_prepare_enable() can now be replaced by
devm_clk_get_enabled() when driver enables the clocks. Moreover, it is no
longer necessary to unprepare and disable the clocks explicitly.
Simplify code.

Signed-off-by: Pei Xiao <xiaopei01@kylinos.cn>
---
 drivers/spi/spi-zynq-qspi.c | 28 ++++++----------------------
 1 file changed, 6 insertions(+), 22 deletions(-)

diff --git a/drivers/spi/spi-zynq-qspi.c b/drivers/spi/spi-zynq-qspi.c
index 5232483c4a3a..f887c55337ae 100644
--- a/drivers/spi/spi-zynq-qspi.c
+++ b/drivers/spi/spi-zynq-qspi.c
@@ -661,7 +661,7 @@ static int zynq_qspi_probe(struct platform_device *pdev)
 		goto remove_ctlr;
 	}
 
-	xqspi->pclk = devm_clk_get(&pdev->dev, "pclk");
+	xqspi->pclk = devm_clk_get_enabled(&pdev->dev, "pclk");
 	if (IS_ERR(xqspi->pclk)) {
 		dev_err(&pdev->dev, "pclk clock not found.\n");
 		ret = PTR_ERR(xqspi->pclk);
@@ -670,36 +670,24 @@ static int zynq_qspi_probe(struct platform_device *pdev)
 
 	init_completion(&xqspi->data_completion);
 
-	xqspi->refclk = devm_clk_get(&pdev->dev, "ref_clk");
+	xqspi->refclk = devm_clk_get_enabled(&pdev->dev, "ref_clk");
 	if (IS_ERR(xqspi->refclk)) {
 		dev_err(&pdev->dev, "ref_clk clock not found.\n");
 		ret = PTR_ERR(xqspi->refclk);
 		goto remove_ctlr;
 	}
 
-	ret = clk_prepare_enable(xqspi->pclk);
-	if (ret) {
-		dev_err(&pdev->dev, "Unable to enable APB clock.\n");
-		goto remove_ctlr;
-	}
-
-	ret = clk_prepare_enable(xqspi->refclk);
-	if (ret) {
-		dev_err(&pdev->dev, "Unable to enable device clock.\n");
-		goto clk_dis_pclk;
-	}
-
 	xqspi->irq = platform_get_irq(pdev, 0);
 	if (xqspi->irq < 0) {
 		ret = xqspi->irq;
-		goto clk_dis_all;
+		goto remove_ctlr;
 	}
 	ret = devm_request_irq(&pdev->dev, xqspi->irq, zynq_qspi_irq,
 			       0, pdev->name, xqspi);
 	if (ret != 0) {
 		ret = -ENXIO;
 		dev_err(&pdev->dev, "request_irq failed\n");
-		goto clk_dis_all;
+		goto remove_ctlr;
 	}
 
 	ret = of_property_read_u32(np, "num-cs",
@@ -709,7 +697,7 @@ static int zynq_qspi_probe(struct platform_device *pdev)
 	} else if (num_cs > ZYNQ_QSPI_MAX_NUM_CS) {
 		ret = -EINVAL;
 		dev_err(&pdev->dev, "only 2 chip selects are available\n");
-		goto clk_dis_all;
+		goto remove_ctlr;
 	} else {
 		ctlr->num_chipselect = num_cs;
 	}
@@ -728,15 +716,11 @@ static int zynq_qspi_probe(struct platform_device *pdev)
 	ret = devm_spi_register_controller(&pdev->dev, ctlr);
 	if (ret) {
 		dev_err(&pdev->dev, "devm_spi_register_controller failed\n");
-		goto clk_dis_all;
+		goto remove_ctlr;
 	}
 
 	return ret;
 
-clk_dis_all:
-	clk_disable_unprepare(xqspi->refclk);
-clk_dis_pclk:
-	clk_disable_unprepare(xqspi->pclk);
 remove_ctlr:
 	spi_controller_put(ctlr);
 
-- 
2.25.1

[PATCH v2 17/17] spi: zynqmp-gqspi: Use helper function devm_clk_get_enabled()

[Pei Xiao]

devm_clk_get() and clk_prepare_enable() can now be replaced by
devm_clk_get_enabled() when driver enables the clocks. Moreover, it is no
longer necessary to unprepare and disable the clocks explicitly.
Simplify code.

Signed-off-by: Pei Xiao <xiaopei01@kylinos.cn>
---
 drivers/spi/spi-zynqmp-gqspi.c | 17 ++---------------
 1 file changed, 2 insertions(+), 15 deletions(-)

diff --git a/drivers/spi/spi-zynqmp-gqspi.c b/drivers/spi/spi-zynqmp-gqspi.c
index 502fd5eccc83..a88b07956c33 100644
--- a/drivers/spi/spi-zynqmp-gqspi.c
+++ b/drivers/spi/spi-zynqmp-gqspi.c
@@ -1244,26 +1244,16 @@ static int zynqmp_qspi_probe(struct platform_device *pdev)
 	if (IS_ERR(xqspi->regs))
 		return PTR_ERR(xqspi->regs);
 
-	xqspi->pclk = devm_clk_get(&pdev->dev, "pclk");
+	xqspi->pclk = devm_clk_get_enabled(&pdev->dev, "pclk");
 	if (IS_ERR(xqspi->pclk))
 		return dev_err_probe(dev, PTR_ERR(xqspi->pclk),
 				     "pclk clock not found.\n");
 
-	xqspi->refclk = devm_clk_get(&pdev->dev, "ref_clk");
+	xqspi->refclk = devm_clk_get_enabled(&pdev->dev, "ref_clk");
 	if (IS_ERR(xqspi->refclk))
 		return dev_err_probe(dev, PTR_ERR(xqspi->refclk),
 				     "ref_clk clock not found.\n");
 
-	ret = clk_prepare_enable(xqspi->pclk);
-	if (ret)
-		return dev_err_probe(dev, ret, "Unable to enable APB clock.\n");
-
-	ret = clk_prepare_enable(xqspi->refclk);
-	if (ret) {
-		dev_err(dev, "Unable to enable device clock.\n");
-		goto clk_dis_pclk;
-	}
-
 	init_completion(&xqspi->data_completion);
 
 	mutex_init(&xqspi->op_lock);
@@ -1339,9 +1329,6 @@ static int zynqmp_qspi_probe(struct platform_device *pdev)
 	pm_runtime_dont_use_autosuspend(&pdev->dev);
 	pm_runtime_put_noidle(&pdev->dev);
 	pm_runtime_set_suspended(&pdev->dev);
-	clk_disable_unprepare(xqspi->refclk);
-clk_dis_pclk:
-	clk_disable_unprepare(xqspi->pclk);
 
 	return ret;
 }
-- 
2.25.1