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drm: Make blocking vblank wait return when the vblank interrupts get disabled

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If there's a blocking vblank wait in progress while the vblank interrupt
gets disabled, the current code will just let the vblank wait time out.
Instead make it return immediately when vblank interrupts get disabled.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Ville Syrjälä 2014-03-06 17:27:39 +02:00 committed by Daniel Vetter
parent e69595c250
commit 3212a22ff7
1 changed files with 1 additions and 0 deletions
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1
drivers/gpu/drm/drm_irq.c
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@ -1189,6 +1189,7 @@ int drm_wait_vblank(struct drm_device *dev, void *data,
DRM_WAIT_ON(ret, dev->vblank[crtc].queue, 3 * HZ,
(((drm_vblank_count(dev, crtc) -
vblwait->request.sequence) <= (1 << 23)) ||
!dev->vblank[crtc].enabled ||
!dev->irq_enabled));
if (ret != -EINTR) {