diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index 666a0ec..15a97ea 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -2775,6 +2775,7 @@
 		*/
 		if (IS_G4X(dev))
 			hotplug_en |= CRT_HOTPLUG_ACTIVATION_PERIOD_64;
+		hotplug_en &= ~CRT_HOTPLUG_VOLTAGE_COMPARE_MASK;
 		hotplug_en |= CRT_HOTPLUG_VOLTAGE_COMPARE_50;
 
 		/* Ignore TV since it's buggy */