From: Deepak Saxena <dsaxena@mvista.com>
Date: Mon, 27 Jul 2009 17:49:44 +0000 (-0700)
Subject: net: irda: init spinlock after memcpy
X-Git-Tag: v2.6.31-rc6~41^2~34
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=0cbb0a781a42f131e9c6836554f402cb85f8f38b;p=platform%2Fkernel%2Flinux-stable.git

net: irda: init spinlock after memcpy

irttp_dup() copies a tsap_cb struct, but does not initialize the
spinlock in the new structure, which confuses lockdep.

Signed-off-by: Deepak Saxena <dsaxena@mvista.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/irda/irttp.c b/net/irda/irttp.c
index ecf4eb2..9cb79f9 100644
--- a/net/irda/irttp.c
+++ b/net/irda/irttp.c
@@ -1453,6 +1453,7 @@ struct tsap_cb *irttp_dup(struct tsap_cb *orig, void *instance)
 	}
 	/* Dup */
 	memcpy(new, orig, sizeof(struct tsap_cb));
+	spin_lock_init(&new->lock);
 
 	/* We don't need the old instance any more */
 	spin_unlock_irqrestore(&irttp->tsaps->hb_spinlock, flags);