[PATCH 2/3] media: v4l2-dev: Make macros to obtain containers const-aware

[Sakari Ailus <sakari.ailus@linux.intel.com>]

Retain the constness of the object in media_entity_to_video_device() and
to_video_device(), by switching to container_of_const().

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
---
 include/media/v4l2-dev.h | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/include/media/v4l2-dev.h b/include/media/v4l2-dev.h
index a213c3398dcf..2e0f6d2e6a78 100644
--- a/include/media/v4l2-dev.h
+++ b/include/media/v4l2-dev.h
@@ -320,8 +320,8 @@ struct video_device {
 	typeof(__entity) __me_vdev_ent = __entity;			\
 									\
 	__me_vdev_ent ?							\
-		container_of(__me_vdev_ent,  struct video_device, entity) : \
-		NULL;							\
+		container_of_const(__me_vdev_ent,  struct video_device, \
+				   entity) : NULL;			\
 })
 
 /**
@@ -330,7 +330,7 @@ struct video_device {
  *
  * @cd: pointer to &struct device
  */
-#define to_video_device(cd) container_of(cd, struct video_device, dev)
+#define to_video_device(cd) container_of_const(cd, struct video_device, dev)
 
 /**
  * __video_register_device - register video4linux devices
-- 
2.47.3