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[media] V4L: dynamically allocate video_device nodes in subdevices

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Currently only very few drivers actually use video_device nodes, embedded
in struct v4l2_subdev. Allocate these nodes dynamically for those drivers
to save memory for the rest.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Tested-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Guennadi Liakhovetski
2011-09-13 08:07:55 -03:00
committed by Mauro Carvalho Chehab
parent 2fbdc9bd42
commit 3e0ec41c5c
2 changed files with 33 additions and 7 deletions
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include/media/v4l2-subdev.h
+2 -2
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@@ -534,13 +534,13 @@ struct v4l2_subdev {
void *dev_priv;
void *host_priv;
/* subdev device node */
struct video_device devnode;
struct video_device *devnode;
};
#define media_entity_to_v4l2_subdev(ent) \
container_of(ent, struct v4l2_subdev, entity)
#define vdev_to_v4l2_subdev(vdev) \
container_of(vdev, struct v4l2_subdev, devnode)
video_get_drvdata(vdev)
/*
* Used for storing subdev information per file handle