Dunno if this is a good idea or not, but it would have helped with some of the
recent bugs.
--
Jesse Barnes, Intel Open Source Technology Center
diff --git a/drivers/gpu/drm/drm_irq.c b/drivers/gpu/drm/drm_irq.c
index 1e787f8..8ae2a6a 100644
--- a/drivers/gpu/drm/drm_irq.c
+++ b/drivers/gpu/drm/drm_irq.c
@@ -531,8 +542,11 @@ int drm_wait_vblank(struct drm_device *dev, void *data,
ret = drm_vblank_get(dev, crtc);
if (ret) {
- DRM_ERROR("failed to acquire vblank counter, %d\n", ret);
- return ret;
+ DRM_ERROR("failed to acquire vblank counter, %d, assuming to
other pipe\n", ret);
+ crtc = !crtc;
+ ret = drm_vblank_get(dev, crtc);
+ if (ret)
+ return ret;
}
seq = drm_vblank_count(dev, crtc);
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