drm/atomic: Fix memleak on ERESTARTSYS during non-blocking commits
authorLeo (Sunpeng) Li <sunpeng.li@amd.com>
Thu, 4 Jan 2018 19:47:33 +0000 (14:47 -0500)
committerAlex Deucher <alexander.deucher@amd.com>
Tue, 9 Jan 2018 17:07:00 +0000 (12:07 -0500)
commit2068b693e6ca92af9d334069035a2560727d145c
tree4ef9044f02dafe498ddb609cbaac1d6e6dd4a5ca
parent4dcc92c13a0cb76aa9f35822ca512318de83816e
drm/atomic: Fix memleak on ERESTARTSYS during non-blocking commits

During a non-blocking commit, it is possible to return before the
commit_tail work is queued (-ERESTARTSYS, for example).

Since a reference on the crtc commit object is obtained for the pending
vblank event when preparing the commit, the above situation will leave
us with an extra reference.

Therefore, if the commit_tail worker has not consumed the event at the
end of a commit, release it's reference.

Signed-off-by: Leo (Sunpeng) Li <sunpeng.li@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1515095253-29817-1-git-send-email-sunpeng.li@amd.com
drivers/gpu/drm/drm_atomic_helper.c