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drm: when queuing an event with NEXTONMISS, return queued sequence to userspace

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If we queue a vblank event but miss it, we should return the actual
sequence number we queued to userspace, so its event handling function
will know which event to look for.

Acked-by: Kristian Høgsberg <[email protected]>
Signed-off-by: Jesse Barnes <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
This commit is contained in:
Jesse Barnes 2009-11-10 08:21:25 +00:00 • committed by Dave Airlie
commit 4a9216453c
1 changed files with 1 additions and 0 deletions
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1
drivers/gpu/drm/drm_irq.c
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@ -585,6 +585,7 @@ static int drm_queue_vblank_event(struct drm_device *dev, int pipe,
if ((vblwait->request.type & _DRM_VBLANK_NEXTONMISS) &&
(seq - vblwait->request.sequence) <= (1 << 23)) {
vblwait->request.sequence = seq + 1;
vblwait->reply.sequence = vblwait->request.sequence;
}
DRM_DEBUG("event on vblank count %d, current %d, crtc %d\n",