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[media] v4l: Only get module if it's different than the driver for v4l2_dev

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When the sub-device is registered, increment the use count of the sub-device
owner only if it's different from the owner of the driver for the media
device. This avoids increasing the use count by the module itself and thus
making it possible to unload it when it's not in use.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
This commit is contained in:
Sakari Ailus 2013-12-12 09:36:46 -03:00 • committed by Mauro Carvalho Chehab
parent 85de721c46
commit b2a06aecb2
2 changed files with 16 additions and 3 deletions
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1
include/media/v4l2-subdev.h
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@ -584,6 +584,7 @@ struct v4l2_subdev {
#endif
struct list_head list;
struct module *owner;
bool owner_v4l2_dev;
u32 flags;
struct v4l2_device *v4l2_dev;
const struct v4l2_subdev_ops *ops;