tree 059871533bb941e9e087ff2cf83eb3bb755be99f
parent 796f0f82433a3040198f216d15fd9ce17c04f360
author Tyler Luu <tluu@ti.com> 1331786240 -0500
committer Eino-Ville Talvala <etalvala@google.com> 1332529869 -0700

camera: prevent possible deadlock scenario

Hold scope of returnFrame lock for just the calculation
of refCount. Otherwise, we could have a scenario where
endImageCapture and stopRecording could cause a deadlock
competing for mReturnFrameLock and mLock. Issue arises
mainly because endImageCapture is signalled from
fillThisBuffer which stopRecording will need to get into.

Make sure mEventQ has a message before calling get() since
read on the pipe will block with notifyEvent holding mLock.

Change-Id: I3a125711632fa311fd794e300cd5008321a84c40
Signed-off-by: Tyler Luu <tluu@ti.com>