iio:light:tsl4531: Switch from CONFIG_PM_SLEEP guards to pm_sleep_ptr() etc

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.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Paul Cercueil <paul@crapouillou.net>
Link: https://lore.kernel.org/r/20220130193147.279148-29-jic23@kernel.org

diff --git a/drivers/iio/light/tsl4531.c b/drivers/iio/light/tsl4531.c
index 70505ba..6ae1b27 100644 (file)
--- a/drivers/iio/light/tsl4531.c
+++ b/drivers/iio/light/tsl4531.c
@@ -215,7 +215,6 @@ static int tsl4531_remove(struct i2c_client *client)
        return 0;
 }
 
-#ifdef CONFIG_PM_SLEEP
 static int tsl4531_suspend(struct device *dev)
 {
        return tsl4531_powerdown(to_i2c_client(dev));
@@ -227,11 +226,8 @@ static int tsl4531_resume(struct device *dev)
                TSL4531_MODE_NORMAL);
 }
 
-static SIMPLE_DEV_PM_OPS(tsl4531_pm_ops, tsl4531_suspend, tsl4531_resume);
-#define TSL4531_PM_OPS (&tsl4531_pm_ops)
-#else
-#define TSL4531_PM_OPS NULL
-#endif
+static DEFINE_SIMPLE_DEV_PM_OPS(tsl4531_pm_ops, tsl4531_suspend,
+                               tsl4531_resume);
 
 static const struct i2c_device_id tsl4531_id[] = {
        { "tsl4531", 0 },
@@ -242,7 +238,7 @@ MODULE_DEVICE_TABLE(i2c, tsl4531_id);
 static struct i2c_driver tsl4531_driver = {
        .driver = {
                .name   = TSL4531_DRV_NAME,
-               .pm     = TSL4531_PM_OPS,
+               .pm     = pm_sleep_ptr(&tsl4531_pm_ops),
        },
        .probe  = tsl4531_probe,
        .remove = tsl4531_remove,