media: mc-device: remove unnecessary __must_check

In the file mc-device.c, the function
media_device_register_entity_notify() does not need to have the
__must_check attribute since it returns only a value of 0.
Therefore, we can remove this attribute and change the function's
return type.

Signed-off-by: Jason Kim <sukbeom.kim@gmail.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>

diff --git a/drivers/media/mc/mc-device.c b/drivers/media/mc/mc-device.c
index 25020d5..8cee956 100644 (file)
--- a/drivers/media/mc/mc-device.c
+++ b/drivers/media/mc/mc-device.c
@@ -756,13 +756,12 @@ int __must_check __media_device_register(struct media_device *mdev,
 }
 EXPORT_SYMBOL_GPL(__media_device_register);
 
-int __must_check media_device_register_entity_notify(struct media_device *mdev,
+void media_device_register_entity_notify(struct media_device *mdev,
                                        struct media_entity_notify *nptr)
 {
        mutex_lock(&mdev->graph_mutex);
        list_add_tail(&nptr->list, &mdev->entity_notify);
        mutex_unlock(&mdev->graph_mutex);
-       return 0;
 }
 EXPORT_SYMBOL_GPL(media_device_register_entity_notify);
 

diff --git a/drivers/media/usb/au0828/au0828-core.c b/drivers/media/usb/au0828/au0828-core.c
index 400cf9b..b3a09d3 100644 (file)
--- a/drivers/media/usb/au0828/au0828-core.c
+++ b/drivers/media/usb/au0828/au0828-core.c
@@ -627,14 +627,9 @@ static int au0828_media_device_register(struct au0828_dev *dev,
        /* register entity_notify callback */
        dev->entity_notify.notify_data = (void *) dev;
        dev->entity_notify.notify = (void *) au0828_media_graph_notify;
-       ret = media_device_register_entity_notify(dev->media_dev,
+       media_device_register_entity_notify(dev->media_dev,
                                                  &dev->entity_notify);
-       if (ret) {
-               dev_err(&udev->dev,
-                       "Media Device register entity_notify Error: %d\n",
-                       ret);
-               return ret;
-       }
+
        /* set enable_source */
        mutex_lock(&dev->media_dev->graph_mutex);
        dev->media_dev->source_priv = (void *) dev;

diff --git a/include/media/media-device.h b/include/media/media-device.h
index 86716ee..2c146d0 100644 (file)
--- a/include/media/media-device.h
+++ b/include/media/media-device.h
@@ -364,7 +364,7 @@ void media_device_unregister_entity(struct media_entity *entity);
  *    media_entity_notify callbacks are invoked.
  */
 
-int __must_check media_device_register_entity_notify(struct media_device *mdev,
+void media_device_register_entity_notify(struct media_device *mdev,
                                        struct media_entity_notify *nptr);
 
 /**
@@ -444,11 +444,10 @@ static inline int media_device_register_entity(struct media_device *mdev,
 static inline void media_device_unregister_entity(struct media_entity *entity)
 {
 }
-static inline int media_device_register_entity_notify(
+static inline void media_device_register_entity_notify(
                                        struct media_device *mdev,
                                        struct media_entity_notify *nptr)
 {
-       return 0;
 }
 static inline void media_device_unregister_entity_notify(
                                        struct media_device *mdev,