drm/radeon: allow PACKET3_PFP_SYNC_ME on evergreen

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Edmondo Tommasina <edmondo.tommasina@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/radeon/evergreen_cs.c b/drivers/gpu/drm/radeon/evergreen_cs.c
index 0d3f744..d960d39 100644
--- a/drivers/gpu/drm/radeon/evergreen_cs.c
+++ b/drivers/gpu/drm/radeon/evergreen_cs.c
@@ -2209,6 +2209,12 @@
 		}
 		break;
 	}
+	case PACKET3_PFP_SYNC_ME:
+		if (pkt->count) {
+			DRM_ERROR("bad PFP_SYNC_ME\n");
+			return -EINVAL;
+		}
+		break;
 	case PACKET3_SURFACE_SYNC:
 		if (pkt->count != 3) {
 			DRM_ERROR("bad SURFACE_SYNC\n");
@@ -3381,6 +3387,7 @@
 	case PACKET3_MPEG_INDEX:
 	case PACKET3_WAIT_REG_MEM:
 	case PACKET3_MEM_WRITE:
+	case PACKET3_PFP_SYNC_ME:
 	case PACKET3_SURFACE_SYNC:
 	case PACKET3_EVENT_WRITE:
 	case PACKET3_EVENT_WRITE_EOP: