From: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
Letting the compiler remove these functions when the kernel is built
without CONFIG_PM 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>
---
drivers/iio/accel/dmard10.c | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)
diff --git a/drivers/iio/accel/dmard10.c b/drivers/iio/accel/dmard10.c
index f9f173eec202..7ad3349ad60f 100644
--- a/drivers/iio/accel/dmard10.c
+++ b/drivers/iio/accel/dmard10.c
@@ -7,6 +7,7 @@
*/
#include <linux/module.h>
+#include <linux/compiler.h>
#include <linux/i2c.h>
#include <linux/iio/iio.h>
#include <linux/iio/sysfs.h>
@@ -218,17 +219,15 @@ static int dmard10_probe(struct i2c_client *client,
return devm_iio_device_register(&client->dev, indio_dev);
}
-#ifdef CONFIG_PM_SLEEP
-static int dmard10_suspend(struct device *dev)
+static int __maybe_unused dmard10_suspend(struct device *dev)
{
return dmard10_shutdown(to_i2c_client(dev));
}
-static int dmard10_resume(struct device *dev)
+static int __maybe_unused dmard10_resume(struct device *dev)
{
return dmard10_reset(to_i2c_client(dev));
}
-#endif
static SIMPLE_DEV_PM_OPS(dmard10_pm_ops, dmard10_suspend, dmard10_resume);
@@ -241,7 +240,7 @@ MODULE_DEVICE_TABLE(i2c, dmard10_i2c_id);
static struct i2c_driver dmard10_driver = {
.driver = {
.name = "dmard10",
- .pm = &dmard10_pm_ops,
+ .pm = pm_ptr(&dmard10_pm_ops),
},
.probe = dmard10_probe,
.id_table = dmard10_i2c_id,
--
2.34.0
