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drm/i915: Do not check or a stalled pageflip prior to it being queued 

When we queue the command or operation to change the scanout address, we
mark the flip as in progress. We can use this flag to prevent us from
checking for a stalled flip prior to its existence!

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Chris Wilson 2015-08-12 13:08:22 +01:00 committed by Daniel Vetter
parent ed75a55bb3
commit 908565c208
1 changed files with 3 additions and 0 deletions
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3
drivers/gpu/drm/i915/intel_display.c
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@ -11236,6 +11236,9 @@ static bool __intel_pageflip_stall_check(struct drm_device *dev,
if (atomic_read(&work->pending) >= INTEL_FLIP_COMPLETE)
return true;
if (atomic_read(&work->pending) < INTEL_FLIP_PENDING)
return false;
if (!work->enable_stall_check)
return false;