iio:adc:exynos_adc: Switch from CONFIG_PM_SLEEP guards to pm_sleep_ptr()

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.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Paul Cercueil <paul@crapouillou.net>
Link: https://lore.kernel.org/r/20220130193147.279148-12-jic23@kernel.org

diff --git a/drivers/iio/adc/exynos_adc.c b/drivers/iio/adc/exynos_adc.c
index 3b3868aa2533087f79c24d3c79b225403b4f4757..cff1ba57fb16a7f6a29d77eb759f1a4e522febff 100644 (file)
--- a/drivers/iio/adc/exynos_adc.c
+++ b/drivers/iio/adc/exynos_adc.c
@@ -968,7 +968,6 @@ static int exynos_adc_remove(struct platform_device *pdev)
        return 0;
 }
 
-#ifdef CONFIG_PM_SLEEP
 static int exynos_adc_suspend(struct device *dev)
 {
        struct iio_dev *indio_dev = dev_get_drvdata(dev);
@@ -1001,11 +1000,9 @@ static int exynos_adc_resume(struct device *dev)
 
        return 0;
 }
-#endif
 
-static SIMPLE_DEV_PM_OPS(exynos_adc_pm_ops,
-                       exynos_adc_suspend,
-                       exynos_adc_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(exynos_adc_pm_ops, exynos_adc_suspend,
+                               exynos_adc_resume);
 
 static struct platform_driver exynos_adc_driver = {
        .probe          = exynos_adc_probe,
@@ -1013,7 +1010,7 @@ static struct platform_driver exynos_adc_driver = {
        .driver         = {
                .name   = "exynos-adc",
                .of_match_table = exynos_adc_match,
-               .pm     = &exynos_adc_pm_ops,
+               .pm     = pm_sleep_ptr(&exynos_adc_pm_ops),
        },
 };