diff options
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_display.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c index 4fdc9ccfea2a..182cef0dc2fd 100644 --- a/drivers/gpu/drm/i915/display/intel_display.c +++ b/drivers/gpu/drm/i915/display/intel_display.c @@ -7526,6 +7526,10 @@ static void i9xx_crtc_enable(struct intel_atomic_state *state, intel_crtc_vblank_on(new_crtc_state); intel_encoders_enable(state, crtc); + + /* prevents spurious underruns */ + if (IS_GEN(dev_priv, 2)) + intel_wait_for_vblank(dev_priv, pipe); } static void i9xx_pfit_disable(const struct intel_crtc_state *old_crtc_state) |