x25: Fix sleep from timer on socket destroy.

If socket destuction gets delayed to a timer, we try to
lock_sock() from that timer which won't work.

Use bh_lock_sock() in that case.

Signed-off-by: David S. Miller <davem@davemloft.net>
Tested-by: Ingo Molnar <mingo@elte.hu>
diff --git a/include/net/x25.h b/include/net/x25.h
index fc3f03d..2cda040 100644
--- a/include/net/x25.h
+++ b/include/net/x25.h
@@ -187,7 +187,7 @@
 extern int  x25_addr_aton(unsigned char *, struct x25_address *,
 			  struct x25_address *);
 extern struct sock *x25_find_socket(unsigned int, struct x25_neigh *);
-extern void x25_destroy_socket(struct sock *);
+extern void x25_destroy_socket_from_timer(struct sock *);
 extern int  x25_rx_call_request(struct sk_buff *, struct x25_neigh *, unsigned int);
 extern void x25_kill_by_neigh(struct x25_neigh *);