diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c
index 518f8d335f322962578c4925590adb8b73495f5c..5509354c7c8946e27f4f84edfa1fee80e42c8cee 100644
--- a/drivers/gpu/drm/radeon/r600.c
+++ b/drivers/gpu/drm/radeon/r600.c
@@ -2396,19 +2396,19 @@ static void r600_disable_interrupt_state(struct radeon_device *rdev)
 		WREG32(DC_HPD4_INT_CONTROL, tmp);
 		if (ASIC_IS_DCE32(rdev)) {
 			tmp = RREG32(DC_HPD5_INT_CONTROL) & DC_HPDx_INT_POLARITY;
-			WREG32(DC_HPD5_INT_CONTROL, 0);
+			WREG32(DC_HPD5_INT_CONTROL, tmp);
 			tmp = RREG32(DC_HPD6_INT_CONTROL) & DC_HPDx_INT_POLARITY;
-			WREG32(DC_HPD6_INT_CONTROL, 0);
+			WREG32(DC_HPD6_INT_CONTROL, tmp);
 		}
 	} else {
 		WREG32(DACA_AUTODETECT_INT_CONTROL, 0);
 		WREG32(DACB_AUTODETECT_INT_CONTROL, 0);
 		tmp = RREG32(DC_HOT_PLUG_DETECT1_INT_CONTROL) & DC_HOT_PLUG_DETECTx_INT_POLARITY;
-		WREG32(DC_HOT_PLUG_DETECT1_INT_CONTROL, 0);
+		WREG32(DC_HOT_PLUG_DETECT1_INT_CONTROL, tmp);
 		tmp = RREG32(DC_HOT_PLUG_DETECT2_INT_CONTROL) & DC_HOT_PLUG_DETECTx_INT_POLARITY;
-		WREG32(DC_HOT_PLUG_DETECT2_INT_CONTROL, 0);
+		WREG32(DC_HOT_PLUG_DETECT2_INT_CONTROL, tmp);
 		tmp = RREG32(DC_HOT_PLUG_DETECT3_INT_CONTROL) & DC_HOT_PLUG_DETECTx_INT_POLARITY;
-		WREG32(DC_HOT_PLUG_DETECT3_INT_CONTROL, 0);
+		WREG32(DC_HOT_PLUG_DETECT3_INT_CONTROL, tmp);
 	}
 }
 
@@ -2834,14 +2834,14 @@ int r600_irq_process(struct radeon_device *rdev)
 				break;
 			case 10:
 				if (disp_int_cont2 & DC_HPD5_INTERRUPT) {
-					disp_int_cont &= ~DC_HPD5_INTERRUPT;
+					disp_int_cont2 &= ~DC_HPD5_INTERRUPT;
 					queue_hotplug = true;
 					DRM_DEBUG("IH: HPD5\n");
 				}
 				break;
 			case 12:
 				if (disp_int_cont2 & DC_HPD6_INTERRUPT) {
-					disp_int_cont &= ~DC_HPD6_INTERRUPT;
+					disp_int_cont2 &= ~DC_HPD6_INTERRUPT;
 					queue_hotplug = true;
 					DRM_DEBUG("IH: HPD6\n");
 				}