diff options
Diffstat (limited to 'include/media/v4l2-subdev.h')
| -rw-r--r-- | include/media/v4l2-subdev.h | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/include/media/v4l2-subdev.h b/include/media/v4l2-subdev.h index a40760174797..0f92ebd2d710 100644 --- a/include/media/v4l2-subdev.h +++ b/include/media/v4l2-subdev.h @@ -826,8 +826,15 @@ struct v4l2_subdev { struct v4l2_subdev_platform_data *pdata; }; -#define media_entity_to_v4l2_subdev(ent) \ - container_of(ent, struct v4l2_subdev, entity) +#define media_entity_to_v4l2_subdev(ent) \ +({ \ + typeof(ent) __me_sd_ent = (ent); \ + \ + __me_sd_ent ? \ + container_of(__me_sd_ent, struct v4l2_subdev, entity) : \ + NULL; \ +}) + #define vdev_to_v4l2_subdev(vdev) \ ((struct v4l2_subdev *)video_get_drvdata(vdev)) |