drm/i915: Revert DisplayPort fast link training feature

[firefly-linux-kernel-4.4.55.git] / drivers / gpu / drm / i915 / i915_irq.c

diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index 0d228f909dcb5fa710dc084f69f0e4cb7bf31bed..0f42a2782afc31aabc2ed6d333fba457caa69705 100644 (file)
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -2354,9 +2354,13 @@ static irqreturn_t gen8_irq_handler(int irq, void *arg)
                                spt_irq_handler(dev, pch_iir);
                        else
                                cpt_irq_handler(dev, pch_iir);
-               } else
-                       DRM_ERROR("The master control interrupt lied (SDE)!\n");
-
+               } else {
+                       /*
+                        * Like on previous PCH there seems to be something
+                        * fishy going on with forwarding PCH interrupts.
+                        */
+                       DRM_DEBUG_DRIVER("The master control interrupt lied (SDE)!\n");
+               }
        }
 
        I915_WRITE_FW(GEN8_MASTER_IRQ, GEN8_MASTER_IRQ_CONTROL);