drm/i915: handle non-flip pending case when unpinning the scanout buffer
authorJesse Barnes <jbarnes@virtuousgeek.org>
Thu, 14 Jan 2010 21:18:02 +0000 (13:18 -0800)
committerEric Anholt <eric@anholt.net>
Tue, 26 Jan 2010 06:01:12 +0000 (22:01 -0800)
commitde3f440f8c9922afe8770dd16c84f1c87d779b59
tree3f5eafaeb3e90a92b3ca503592d99277fe60816b
parent8a6c77d645d9111f7bc01f908464301f5c3e0a05
drm/i915: handle non-flip pending case when unpinning the scanout buffer

The first page flip queued will replace the current front buffer, which
should have a 0 pending flip count.  So at finish time we need to handle
that case (i.e. if the flip count is 0 *or* dec_and_test is 0 we need to
wake the waiters).

Also fix up an error path in the queue function and add some debug
output (only enabled with driver debugging).

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Eric Anholt <eric@anholt.net>
drivers/gpu/drm/i915/intel_display.c