tree d5ac688f1b254e6986153212bf346d728466eaf0
parent 4019aaa2b314a5be9886ae1db64ff8c6d3c060ed
author Maarten Lankhorst <maarten.lankhorst@canonical.com> 1389714538 +0100
committer Ben Skeggs <bskeggs@redhat.com> 1390448354 +1000

drm/nouveau: hold mutex while syncing to kernel channel

Not holding the mutex potentially causes corruption of the kernel
channel when page flipping.

Cc: stable@vger.kernel.org #3.13
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>