From: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
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@xxxxxxxxxx>
Cc: Matt Ranostay <matt.ranostay@xxxxxxxxxxxx>
---
drivers/iio/proximity/as3935.c | 12 +++---------
1 file changed, 3 insertions(+), 9 deletions(-)
diff --git a/drivers/iio/proximity/as3935.c b/drivers/iio/proximity/as3935.c
index d62766b6b39e..605c6095d704 100644
--- a/drivers/iio/proximity/as3935.c
+++ b/drivers/iio/proximity/as3935.c
@@ -295,8 +295,7 @@ 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)
+static __maybe_unused int as3935_suspend(struct device *dev)
{
struct iio_dev *indio_dev = dev_get_drvdata(dev);
struct as3935_state *st = iio_priv(indio_dev);
@@ -316,7 +315,7 @@ static int as3935_suspend(struct device *dev)
return ret;
}
-static int as3935_resume(struct device *dev)
+static __maybe_unused int as3935_resume(struct device *dev)
{
struct iio_dev *indio_dev = dev_get_drvdata(dev);
struct as3935_state *st = iio_priv(indio_dev);
@@ -338,11 +337,6 @@ static int as3935_resume(struct device *dev)
}
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 void as3935_stop_work(void *data)
{
@@ -472,7 +466,7 @@ static struct spi_driver as3935_driver = {
.driver = {
.name = "as3935",
.of_match_table = as3935_of_match,
- .pm = AS3935_PM_OPS,
+ .pm = pm_ptr(&as3935_pm_ops),
},
.probe = as3935_probe,
.id_table = as3935_id,
--
2.34.0
