media: uvcvideo: Convert from using an atomic variable to a reference count

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When adding support for metadata nodes, we'll have to keep video
devices registered until all metadata nodes are closed too. Since
this has nothing to do with stream counting, replace the nstreams
atomic variable with a reference counter.

Signed-off-by: Guennadi Liakhovetski <guennadi.liakhovetski@intel.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

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Guennadi Liakhovetski 2017-08-08 08:56:23 -04:00 • committed by Mauro Carvalho Chehab

parent dfa6f2400c

commit 9d15cd958c

2 changed files with 10 additions and 17 deletions

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25

drivers/media/usb/uvc/uvc_driver.c

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2

drivers/media/usb/uvc/uvcvideo.h

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