[media] ad5820: use __maybe_unused for PM functions
The new ad5820 driver uses #ifdef to hide the suspend/resume functions,
but gets it wrong when CONFIG_PM_SLEEP is disabled:
drivers/media/i2c/ad5820.c:286:12: error: 'ad5820_resume' defined but not used [-Werror=unused-function]
drivers/media/i2c/ad5820.c:274:12: error: 'ad5820_suspend' defined but not used [-Werror=unused-function]
This replaces the #ifdef with a __maybe_unused annotation that is
simpler and harder to get wrong, avoiding the warning.
Fixes: bee3d5115611 ("[media] ad5820: Add driver for auto-focus coil")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
diff --git a/drivers/media/i2c/ad5820.c b/drivers/media/i2c/ad5820.c
index fd4c5f6..beab2f3 100644
--- a/drivers/media/i2c/ad5820.c
+++ b/drivers/media/i2c/ad5820.c
@@ -269,9 +269,7 @@
/*
* I2C driver
*/
-#ifdef CONFIG_PM
-
-static int ad5820_suspend(struct device *dev)
+static int __maybe_unused ad5820_suspend(struct device *dev)
{
struct i2c_client *client = container_of(dev, struct i2c_client, dev);
struct v4l2_subdev *subdev = i2c_get_clientdata(client);
@@ -283,7 +281,7 @@
return ad5820_power_off(coil, false);
}
-static int ad5820_resume(struct device *dev)
+static int __maybe_unused ad5820_resume(struct device *dev)
{
struct i2c_client *client = container_of(dev, struct i2c_client, dev);
struct v4l2_subdev *subdev = i2c_get_clientdata(client);
@@ -295,13 +293,6 @@
return ad5820_power_on(coil, true);
}
-#else
-
-#define ad5820_suspend NULL
-#define ad5820_resume NULL
-
-#endif /* CONFIG_PM */
-
static int ad5820_probe(struct i2c_client *client,
const struct i2c_device_id *devid)
{