From: Ville Syrjälä <ville.syrj...@linux.intel.com>
We should update the last in drm_update_vblank_count() to avoid applying
the diff more than once. This could occur eg. if drm_vblank_off() gets
called multiple times for the crtc.
Signed-off-by: Ville Syrjälä <ville.syrj...@linux.intel.com>
---
drivers/gpu/drm/drm_irq.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/drm_irq.c b/drivers/gpu/drm/drm_irq.c
index 0523f5b..67507a4 100644
--- a/drivers/gpu/drm/drm_irq.c
+++ b/drivers/gpu/drm/drm_irq.c
@@ -109,6 +109,8 @@ static void drm_update_vblank_count(struct drm_device *dev,
int crtc)
if (diff == 0)
return;
+ vblank->last = cur_vblank;
+
/* Reinitialize corresponding vblank timestamp if high-precision query
* available. Skip this step if query unsupported or failed. Will
* reinitialize delayed at next vblank interrupt in that case.
--
1.8.5.5
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