Unplugging MST displays usually causes underruns, so turn off underrun reporting so people don't report false positives.

Signed-off-by: Lyude cpaul@redhat.com --- drivers/gpu/drm/i915/intel_display.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 6e0d828..fa8a72b 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -5146,6 +5146,10 @@ static void haswell_crtc_disable(struct drm_crtc *crtc) if (intel_crtc->config->has_pch_encoder) intel_set_pch_fifo_underrun_reporting(dev_priv, TRANSCODER_A, false); + else if (intel_crtc->config->dp_encoder_is_mst) + intel_set_cpu_fifo_underrun_reporting(dev_priv, + intel_crtc->pipe, false); +

for_each_encoder_on_crtc(dev, crtc, encoder) { intel_opregion_notify_encoder(encoder, false); @@ -5182,7 +5186,10 @@ static void haswell_crtc_disable(struct drm_crtc *crtc)

intel_set_pch_fifo_underrun_reporting(dev_priv, TRANSCODER_A, true); - } + } else if (intel_crtc->config->dp_encoder_is_mst) + intel_set_cpu_fifo_underrun_reporting(dev_priv, + intel_crtc->pipe, true); + }

static void i9xx_pfit_enable(struct intel_crtc *crtc)