diff options
| -rw-r--r-- | drivers/gpu/drm/i915/intel_dp.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index e03e79f7714a..f30db8f2425e 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -4041,6 +4041,11 @@ intel_dp_check_link_status(struct intel_dp *intel_dp) if (!to_intel_crtc(intel_encoder->base.crtc)->active) return; + /* FIXME: we need to synchronize this sort of stuff with hardware + * readout */ + if (WARN_ON_ONCE(!intel_dp->lane_count)) + return; + /* if link training is requested we should perform it always */ if ((intel_dp->compliance_test_type == DP_TEST_LINK_TRAINING) || (!drm_dp_channel_eq_ok(link_status, intel_dp->lane_count))) { |