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);
        }
 }
 
                                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");
                                }