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yaml --- r: 307134 b: refs/heads/master c: bfa3384 h: refs/heads/master v: v3
git-mirror · Apr 12, 2012 · cecfb27 · cecfb27
1 parent 88a26a3
commit cecfb27
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Showing 2 changed files with 8 additions and 1 deletion.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: f817586cebf1b946d1f327f9a596048efd6b64e9
+refs/heads/master: bfa3384a9a84aaaa59443bbd776c142e7dba4b0f
diff --git a/trunk/drivers/gpu/drm/i915/intel_dp.c b/trunk/drivers/gpu/drm/i915/intel_dp.c
@@ -2462,6 +2462,13 @@ intel_dp_init(struct drm_device *dev, int output_reg)
 		pp_off = I915_READ(PCH_PP_OFF_DELAYS);
 		pp_div = I915_READ(PCH_PP_DIVISOR);
 
+		if (!pp_on || !pp_off || !pp_div) {
+			DRM_INFO("bad panel power sequencing delays, disabling panel\n");
+			intel_dp_encoder_destroy(&intel_dp->base.base);
+			intel_dp_destroy(&intel_connector->base);
+			return;
+		}
+
 		/* Pull timing values out of registers */
 		cur.t1_t3 = (pp_on & PANEL_POWER_UP_DELAY_MASK) >>
 			PANEL_POWER_UP_DELAY_SHIFT;