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| author | Mauro Carvalho Chehab <mchehab@osg.samsung.com> | 2015-12-11 13:02:19 +0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@osg.samsung.com> | 2016-01-11 17:19:04 +0300 |
| commit | 8ed8c88c460fa6ce71deb9847f78a5bff4dfcb0e (patch) | |
| tree | 46b906be23d4a283054abb780f1260306393c329 /Documentation/media-framework.txt | |
| parent | ab22e77cd3d3073c8cac51b59713ef635678dfbe (diff) | |
| download | linux-8ed8c88c460fa6ce71deb9847f78a5bff4dfcb0e.tar.xz | |
[media] media-entity.h: get rid of revision and group_id fields
Both revision and group_id fields were never used and were always
initialized to zero. Remove them.
Suggested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Diffstat (limited to 'Documentation/media-framework.txt')
| -rw-r--r-- | Documentation/media-framework.txt | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/Documentation/media-framework.txt b/Documentation/media-framework.txt index 7fbfe4bd1f47..ef3663af1db3 100644 --- a/Documentation/media-framework.txt +++ b/Documentation/media-framework.txt @@ -110,10 +110,10 @@ If no pads are needed, drivers could directly fill entity->num_pads with 0 and entity->pads with NULL or to call the above function that will do the same. -The media_entity name, type, flags, revision and group_id fields should be -initialized before calling media_device_register_entity(). Entities embedded -in higher-level standard structures can have some of those fields set by the -higher-level framework. +The media_entity name, type and flags fields should be initialized before +calling media_device_register_entity(). Entities embedded in higher-level +standard structures can have some of those fields set by the higher-level +framework. As the number of pads is known in advance, the pads array is not allocated dynamically but is managed by the entity driver. Most drivers will embed the @@ -164,9 +164,7 @@ Entities have flags that describe the entity capabilities and state. Logical entity groups can be defined by setting the group ID of all member entities to the same non-zero value. An entity group serves no purpose in the -kernel, but is reported to userspace during entities enumeration. The group_id -field belongs to the media device driver and must not by touched by entity -drivers. +kernel, but is reported to userspace during entities enumeration. Media device drivers should define groups if several entities are logically bound together. Example usages include reporting |