From: Jesper Dangaard Brouer <hawk@comx.dk>
Date: Mon, 8 Jun 2009 03:11:38 +0000 (+0000)
Subject: can: af_can.c use rcu_barrier() on module unload.
X-Git-Tag: v2.6.31-rc1~14^2~145
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=382bfeec48e43c416af9b271b9b70d2f61ef32d2;p=platform%2Fkernel%2Flinux-exynos.git

can: af_can.c use rcu_barrier() on module unload.

This module uses rcu_call() thus it should use rcu_barrier()
on module unload.

Signed-off-by: Jesper Dangaard Brouer <hawk@comx.dk>
Acked-by: Oliver Hartkopp <oliver@hartkopp.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/can/af_can.c b/net/can/af_can.c
index 10f0528..e733725 100644
--- a/net/can/af_can.c
+++ b/net/can/af_can.c
@@ -903,6 +903,8 @@ static __exit void can_exit(void)
 	}
 	spin_unlock(&can_rcvlists_lock);
 
+	rcu_barrier(); /* Wait for completion of call_rcu()'s */
+
 	kmem_cache_destroy(rcv_cache);
 }