iio:proximity:as3935: 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.

Reviewed-by: Gwendal Grignou <gwendal@chromium.org>
Acked-by: Matt Ranostay <matt.ranostay@konsulko.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Paul Cercueil <paul@crapouillou.net>
Link: https://lore.kernel.org/r/20220130193147.279148-34-jic23@kernel.org

diff --git a/drivers/iio/proximity/as3935.c b/drivers/iio/proximity/as3935.c
index 00e0649..67891ce 100644 (file)
--- a/drivers/iio/proximity/as3935.c
+++ b/drivers/iio/proximity/as3935.c
@@ -296,7 +296,6 @@ static void calibrate_as3935(struct as3935_state *st)
        as3935_write(st, AS3935_NFLWDTH, st->nflwdth_reg);
 }
 
-#ifdef CONFIG_PM_SLEEP
 static int as3935_suspend(struct device *dev)
 {
        struct iio_dev *indio_dev = dev_get_drvdata(dev);
@@ -338,12 +337,7 @@ err_resume:
        return ret;
 }
 
-static SIMPLE_DEV_PM_OPS(as3935_pm_ops, as3935_suspend, as3935_resume);
-#define AS3935_PM_OPS (&as3935_pm_ops)
-
-#else
-#define AS3935_PM_OPS NULL
-#endif
+static DEFINE_SIMPLE_DEV_PM_OPS(as3935_pm_ops, as3935_suspend, as3935_resume);
 
 static int as3935_probe(struct spi_device *spi)
 {
@@ -464,7 +458,7 @@ static struct spi_driver as3935_driver = {
        .driver = {
                .name   = "as3935",
                .of_match_table = as3935_of_match,
-               .pm     = AS3935_PM_OPS,
+               .pm     = pm_sleep_ptr(&as3935_pm_ops),
        },
        .probe          = as3935_probe,
        .id_table       = as3935_id,