iio: adc: stm32-adc: Use pm_runtime_resume_and_get() to replace open coding.

Found using coccicheck script under review at:
https://lore.kernel.org/lkml/20210427141946.2478411-1-Julia.Lawall@inria.fr/

This is a prequel to taking a closer look at the runtime pm in IIO drivers
in general.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Fabrice Gasnier <fabrice.gasnier@foss.st.com>
Reviewed-by: Fabrice Gasnier <fabrice.gasnier@foss.st.com>
Reviewed-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/20210509113354.660190-15-jic23@kernel.org

diff --git a/drivers/iio/adc/stm32-adc.c b/drivers/iio/adc/stm32-adc.c
index c9d36c8..5088de8 100644 (file)
--- a/drivers/iio/adc/stm32-adc.c
+++ b/drivers/iio/adc/stm32-adc.c
@@ -1158,11 +1158,9 @@ static int stm32_adc_single_conv(struct iio_dev *indio_dev,
 
        adc->bufi = 0;
 
-       ret = pm_runtime_get_sync(dev);
-       if (ret < 0) {
-               pm_runtime_put_noidle(dev);
+       ret = pm_runtime_resume_and_get(dev);
+       if (ret < 0)
                return ret;
-       }
 
        /* Apply sampling time settings */
        stm32_adc_writel(adc, regs->smpr[0], adc->smpr_val[0]);
@@ -1364,11 +1362,9 @@ static int stm32_adc_update_scan_mode(struct iio_dev *indio_dev,
        struct device *dev = indio_dev->dev.parent;
        int ret;
 
-       ret = pm_runtime_get_sync(dev);
-       if (ret < 0) {
-               pm_runtime_put_noidle(dev);
+       ret = pm_runtime_resume_and_get(dev);
+       if (ret < 0)
                return ret;
-       }
 
        adc->num_conv = bitmap_weight(scan_mask, indio_dev->masklength);
 
@@ -1413,11 +1409,9 @@ static int stm32_adc_debugfs_reg_access(struct iio_dev *indio_dev,
        struct device *dev = indio_dev->dev.parent;
        int ret;
 
-       ret = pm_runtime_get_sync(dev);
-       if (ret < 0) {
-               pm_runtime_put_noidle(dev);
+       ret = pm_runtime_resume_and_get(dev);
+       if (ret < 0)
                return ret;
-       }
 
        if (!readval)
                stm32_adc_writel(adc, reg, writeval);
@@ -1537,11 +1531,9 @@ static int stm32_adc_buffer_postenable(struct iio_dev *indio_dev)
        struct device *dev = indio_dev->dev.parent;
        int ret;
 
-       ret = pm_runtime_get_sync(dev);
-       if (ret < 0) {
-               pm_runtime_put_noidle(dev);
+       ret = pm_runtime_resume_and_get(dev);
+       if (ret < 0)
                return ret;
-       }
 
        ret = stm32_adc_set_trig(indio_dev, indio_dev->trig);
        if (ret) {