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drm/i915: Wrap -EIO send-vblank event for failed pageflip in spinlock 

drm_send_vblank_event() demands that we hold the event spinlock whilst
calling it, so do so.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
[danvet: Fix the double lock as requested by Chris.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Chris Wilson 2014-09-07 16:51:12 +01:00 committed by Daniel Vetter
parent 1d1ef21daf
commit f0d3dad3ad
1 changed files with 4 additions and 1 deletions
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5
drivers/gpu/drm/i915/intel_display.c
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@ -10084,8 +10084,11 @@ free_work:
out_hang:
intel_crtc_wait_for_pending_flips(crtc);
ret = intel_pipe_set_base(crtc, crtc->x, crtc->y, fb);
if (ret == 0 && event)
if (ret == 0 && event) {
spin_lock_irqsave(&dev->event_lock, flags);
drm_send_vblank_event(dev, pipe, event);
spin_unlock_irqrestore(&dev->event_lock, flags);
}
}
return ret;
}