[PATCH v4 3/6] iio: adc: bcm_iproc_adc: use devm-managed clock

[mdshahid03 at gmail.com]

From: Mohammad Shahid <mdshahid03 at gmail.com>

Convert the ADC clock to use devm-managed APIs to simplify
resource cleanup.

Signed-off-by: Mohammad Shahid <mdshahid03 at gmail.com>
---
 drivers/iio/adc/bcm_iproc_adc.c | 19 +++++--------------
 1 file changed, 5 insertions(+), 14 deletions(-)

diff --git a/drivers/iio/adc/bcm_iproc_adc.c b/drivers/iio/adc/bcm_iproc_adc.c
index 21bd51da9cd6..d6f82f8ddee1 100644
--- a/drivers/iio/adc/bcm_iproc_adc.c
+++ b/drivers/iio/adc/bcm_iproc_adc.c
@@ -110,7 +110,6 @@ do { \
 
 struct iproc_adc_priv {
 	struct regmap *regmap;
-	struct clk *adc_clk;
 	struct mutex mutex;
 	int  irqno;
 	int chan_val;
@@ -511,6 +510,7 @@ static int iproc_adc_probe(struct platform_device *pdev)
 	struct iproc_adc_priv *adc_priv;
 	struct iio_dev *indio_dev = NULL;
 	struct device *dev = &pdev->dev;
+	struct clk *adc_clk;
 	int ret;
 
 	indio_dev = devm_iio_device_alloc(dev, sizeof(*adc_priv));
@@ -530,10 +530,9 @@ static int iproc_adc_probe(struct platform_device *pdev)
 		return dev_err_probe(dev, PTR_ERR(adc_priv->regmap),
 				     "failed to get handle for tsc syscon\n");
 
-	adc_priv->adc_clk = devm_clk_get(dev, "tsc_clk");
-	if (IS_ERR(adc_priv->adc_clk))
-		return dev_err_probe(dev, PTR_ERR(adc_priv->adc_clk),
-				     "failed getting clock tsc_clk\n");
+	adc_clk = devm_clk_get_enabled(dev, "tsc_clk");
+	if (IS_ERR(adc_clk))
+		return dev_err_probe(dev, PTR_ERR(adc_clk), "failed to enable clock\n");
 
 	adc_priv->irqno = platform_get_irq(pdev, 0);
 	if (adc_priv->irqno < 0)
@@ -551,13 +550,9 @@ static int iproc_adc_probe(struct platform_device *pdev)
 	if (ret)
 		return ret;
 
-	ret = clk_prepare_enable(adc_priv->adc_clk);
-	if (ret)
-		return dev_err_probe(dev, ret, "failed to enable clock\n");
-
 	ret = iproc_adc_enable(indio_dev);
 	if (ret)
-		goto err_adc_enable;
+		return ret;
 
 	indio_dev->name = "iproc-static-adc";
 	indio_dev->info = &iproc_adc_iio_info;
@@ -575,8 +570,6 @@ static int iproc_adc_probe(struct platform_device *pdev)
 
 err_clk:
 	iproc_adc_disable(indio_dev);
-err_adc_enable:
-	clk_disable_unprepare(adc_priv->adc_clk);
 
 	return ret;
 }
@@ -584,11 +577,9 @@ static int iproc_adc_probe(struct platform_device *pdev)
 static void iproc_adc_remove(struct platform_device *pdev)
 {
 	struct iio_dev *indio_dev = platform_get_drvdata(pdev);
-	struct iproc_adc_priv *adc_priv = iio_priv(indio_dev);
 
 	iio_device_unregister(indio_dev);
 	iproc_adc_disable(indio_dev);
-	clk_disable_unprepare(adc_priv->adc_clk);
 }
 
 static const struct of_device_id iproc_adc_of_match[] = {
-- 
2.43.0