diff mbox series

[14/49] iio:adc:exynos_adc: Switch from CONFIG_PM_SLEEP guards to pm_ptr() / __maybe_unused

Message ID 20211123211019.2271440-15-jic23@kernel.org (mailing list archive)
State Superseded
Headers show
Series iio: Tree wide switch from CONFIG_PM* to __maybe_unused etc. | expand

Commit Message

Jonathan Cameron Nov. 23, 2021, 9:09 p.m. UTC
From: Jonathan Cameron <Jonathan.Cameron@huawei.com>

Letting the compiler remove these functions when the kernel is built
without CONFIG_PM_SLEEP support is simpler and less error prone than the
use of #ifdef based config guards.

Removing instances of this approach from IIO also stops them being
copied into new drivers.

The pm_ptr() macro only removes the reference if CONFIG_PM is not
set. It is possible for CONFIG_PM=y without CONFIG_SLEEP, so this
will not always remove the pm_ops structure.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Krzysztof Kozlowski <krzk@kernel.org>
---
 drivers/iio/adc/exynos_adc.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

Comments

Krzysztof Kozlowski Nov. 25, 2021, 8:50 a.m. UTC | #1
On 23/11/2021 22:09, Jonathan Cameron wrote:
> From: Jonathan Cameron <Jonathan.Cameron@huawei.com>
> 
> Letting the compiler remove these functions when the kernel is built
> without CONFIG_PM_SLEEP support is simpler and less error prone than the
> use of #ifdef based config guards.
> 
> Removing instances of this approach from IIO also stops them being
> copied into new drivers.
> 
> The pm_ptr() macro only removes the reference if CONFIG_PM is not
> set. It is possible for CONFIG_PM=y without CONFIG_SLEEP, so this
> will not always remove the pm_ops structure.
> 
> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
> Cc: Krzysztof Kozlowski <krzk@kernel.org>
> ---
>  drivers/iio/adc/exynos_adc.c | 8 +++-----
>  1 file changed, 3 insertions(+), 5 deletions(-)
> 

Looks good:

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>

Best regards,
Krzysztof
diff mbox series

Patch

diff --git a/drivers/iio/adc/exynos_adc.c b/drivers/iio/adc/exynos_adc.c
index 3b3868aa2533..01a801d325a9 100644
--- a/drivers/iio/adc/exynos_adc.c
+++ b/drivers/iio/adc/exynos_adc.c
@@ -968,8 +968,7 @@  static int exynos_adc_remove(struct platform_device *pdev)
 	return 0;
 }
 
-#ifdef CONFIG_PM_SLEEP
-static int exynos_adc_suspend(struct device *dev)
+static __maybe_unused int exynos_adc_suspend(struct device *dev)
 {
 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
 	struct exynos_adc *info = iio_priv(indio_dev);
@@ -982,7 +981,7 @@  static int exynos_adc_suspend(struct device *dev)
 	return 0;
 }
 
-static int exynos_adc_resume(struct device *dev)
+static __maybe_unused int exynos_adc_resume(struct device *dev)
 {
 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
 	struct exynos_adc *info = iio_priv(indio_dev);
@@ -1001,7 +1000,6 @@  static int exynos_adc_resume(struct device *dev)
 
 	return 0;
 }
-#endif
 
 static SIMPLE_DEV_PM_OPS(exynos_adc_pm_ops,
 			exynos_adc_suspend,
@@ -1013,7 +1011,7 @@  static struct platform_driver exynos_adc_driver = {
 	.driver		= {
 		.name	= "exynos-adc",
 		.of_match_table = exynos_adc_match,
-		.pm	= &exynos_adc_pm_ops,
+		.pm	= pm_ptr(&exynos_adc_pm_ops),
 	},
 };