1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/gpu/drm/radeon/r100.c b/drivers/gpu/drm/radeon/r100.c
index 91eb762eb3f9..73f9a79ed64d 100644
--- a/drivers/gpu/drm/radeon/r100.c
+++ b/drivers/gpu/drm/radeon/r100.c
@@ -312,10 +312,12 @@ int r100_irq_process(struct radeon_device *rdev)
                 /* Vertical blank interrupts */
                 if (status & RADEON_CRTC_VBLANK_STAT) {
                         drm_handle_vblank(rdev->ddev, 0);
+                        rdev->pm.vblank_sync = true;
                         wake_up(&rdev->irq.vblank_queue);
                 }
                 if (status & RADEON_CRTC2_VBLANK_STAT) {
                         drm_handle_vblank(rdev->ddev, 1);
+                        rdev->pm.vblank_sync = true;
                         wake_up(&rdev->irq.vblank_queue);
                 }
                 if (status & RADEON_FP_DETECT_STAT) {