Laurent Pinchart 95db3a60e0
[media] v4l: Add a media_device pointer to the v4l2_device structure ...
The pointer will later be used to register/unregister media entities
when registering/unregistering a v4l2_subdev or a video_device.
With the introduction of media devices, device drivers need to store a
pointer to a driver-specific structure in the device's drvdata.
v4l2_device can't claim ownership of the drvdata anymore.
To maintain compatibility with drivers that rely on v4l2_device storing
a pointer to itself in the device's drvdata, v4l2_device_register() will
keep doing so if the drvdata is NULL.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com >
Acked-by: Hans Verkuil <hverkuil@xs4all.nl >
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com >
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