qiurui
/
linux-kernelorg-stable
mirror of https://kernel.googlesource.com/pub/scm/linux/kernel/git/stable/linux.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

media: v4l: Make media_entity_to_video_device() NULL-safe 

Make media_entity_to_video_device(NULL) return NULL, instead of an invalid
pointer value.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
This commit is contained in:
Sakari Ailus 2025-06-11 15:40:42 +03:00 committed by Hans Verkuil
parent 09ef952138
commit 7a8212f3bc
1 changed files with 9 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
include/media/v4l2-dev.h
View File

@ -313,10 +313,16 @@ struct video_device {
* media_entity_to_video_device - Returns a &struct video_device from
* the &struct media_entity embedded on it.
*
* @__entity: pointer to &struct media_entity
* @__entity: pointer to &struct media_entity, may be NULL
*/
#define media_entity_to_video_device(__entity) \
container_of(__entity, struct video_device, entity)
#define media_entity_to_video_device(__entity) \
({ \
typeof(__entity) __me_vdev_ent = __entity; \
\
__me_vdev_ent ? \
container_of(__me_vdev_ent, struct video_device, entity) : \
NULL; \
})
/**
* to_video_device - Returns a &struct video_device from the