diff --git a/[refs] b/[refs] index df120c37f010..073d4e632fc1 100644 --- a/[refs] +++ b/[refs] @@ -1,2 +1,2 @@ --- -refs/heads/master: 7183dc2912510cf005fcc59239f8d153ef51d3f0 +refs/heads/master: 59cd09e1aea3ac6eb15b45e5d2261a63ecb1799c diff --git a/trunk/drivers/gpu/drm/i915/intel_dp.c b/trunk/drivers/gpu/drm/i915/intel_dp.c index fc51730b89d6..a9a5051419df 100644 --- a/trunk/drivers/gpu/drm/i915/intel_dp.c +++ b/trunk/drivers/gpu/drm/i915/intel_dp.c @@ -1522,6 +1522,8 @@ intel_dp_link_down(struct intel_dp *intel_dp) static void intel_dp_check_link_status(struct intel_dp *intel_dp) { + int ret; + if (!intel_dp->base.base.crtc) return; @@ -1530,6 +1532,15 @@ intel_dp_check_link_status(struct intel_dp *intel_dp) return; } + /* Try to read receiver status if the link appears to be up */ + ret = intel_dp_aux_native_read(intel_dp, + 0x000, intel_dp->dpcd, + sizeof (intel_dp->dpcd)); + if (ret != sizeof(intel_dp->dpcd)) { + intel_dp_link_down(intel_dp); + return; + } + if (!intel_channel_eq_ok(intel_dp)) { intel_dp_start_link_train(intel_dp); intel_dp_complete_link_train(intel_dp);