diff --git a/i/sys/arm/allwinner/if_awg.c b/sys/arm/allwinner/if_awg.c
--- a/i/sys/arm/allwinner/if_awg.c
+++ b/sys/arm/allwinner/if_awg.c
@@ -1102,6 +1102,10 @@
 	if_setdrvflagbits(ifp, 0, IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
 }
 
+#ifdef DEVICE_POLLING
+static int awg_poll(if_t ifp, enum poll_cmd cmd, int count);
+#endif
+
 static int
 awg_ioctl(if_t ifp, u_long cmd, caddr_t data)
 {