---

yaml --- r: 254853 b: refs/heads/master c: 59cd09e h: refs/heads/master i: 254851: 8f5f026 v: v3
git-mirror · Jul 7, 2011 · 79cd88d · 79cd88d
1 parent 0b95cab
commit 79cd88d
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Showing 2 changed files with 12 additions and 1 deletion.
diff --git 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
@@ -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);