This is where the lock happens: https://code-review.phablet.ubuntu.com/gitweb?p=aosp/device/lge/mako.git;a=blob;f=camera/QCameraHWI_Preview.cpp;h=658bd84c62bbb74e9fd894ceda157d1beefc328e;hb=refs/heads/phablet-4.4.2_r1#l988
The buffer_dequeue call there never returns while playing with the focus ring (and refocusing).
This is where the lock happens: /code-review. phablet. ubuntu. com/gitweb? p=aosp/ device/ lge/mako. git;a=blob; f=camera/ QCameraHWI_ Preview. cpp;h=658bd84c6 2bbb74e9fd894ce da157d1beefc328 e;hb=refs/ heads/phablet- 4.4.2_r1# l988
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The buffer_dequeue call there never returns while playing with the focus ring (and refocusing).