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media: v4l2-dev.h: fix symbol collision in media_entity_to_video_device()

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A recent change to the media_entity_to_video_device() macro breaks some
use-cases for the macro due to a symbol collision. Before the change
this worked:

    vdev = media_entity_to_video_device(link->sink->entity);

While after the change it results in a compiler error "error: 'struct
video_device' has no member named 'link'; did you mean 'lock'?". While
the following still works after the change.

    struct media_entity *entity = link->sink->entity;
    vdev = media_entity_to_video_device(entity);

Fix the collision by renaming the macro argument to '__entity'.

Fixes: 69b925c5fc ("media: v4l2-dev.h: add kernel-doc to two macros")

Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Niklas Söderlund 2018-01-25 08:08:52 -05:00 committed by Mauro Carvalho Chehab
parent d2d476b705
commit 7b73ce9d4c
1 changed files with 3 additions and 3 deletions
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6
include/media/v4l2-dev.h
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@ -298,10 +298,10 @@ 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
*/
#define media_entity_to_video_device(entity) \
container_of(entity, struct video_device, entity)
#define media_entity_to_video_device(__entity) \
container_of(__entity, struct video_device, entity)
/**
* to_video_device - Returns a &struct video_device from the