--- a/arch/mips/ar231x/reset.c
+++ b/arch/mips/ar231x/reset.c
@@ -24,7 +24,8 @@ struct event_t {
 static struct timer_list rst_button_timer;
 static unsigned long seen;
 
-extern struct sock *uevent_sock;
+struct sock *uevent_sock = NULL;
+EXPORT_SYMBOL_GPL(uevent_sock);
 extern u64 uevent_next_seqnum(void);
 
 static int no_release_workaround = 1;
