4e186b2d6c
If we aren't changing the power state, no need to take locks and schedule fences, etc. There seem to be lock ordering issues in the CP and fence code in some cases; see bug 29140 below. Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=29140 Possibly also: https://bugzilla.kernel.org/show_bug.cgi?id=16581 Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Cc: stable@kernel.org Signed-off-by: Dave Airlie <airlied@redhat.com>