netdev - [PATCH net 2/2] caif: Remove bad WARN_ON in caif

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Date:	Tue, 17 Jan 2012 14:03:14 +0100
From:	Sjur Brændeland <sjur.brandeland@...ricsson.com>
To:	netdev@...r.kernel.org, David Miller <davem@...emloft.net>
Cc:	Sjur Brændeland <sjur.brandeland@...ricsson.com>
Subject: [PATCH net 2/2] caif: Remove bad WARN_ON in caif_dev

Remove WARN_ON and bad handling of SKB without destructor callback
in caif_flow_cb. SKB without destructor cannot be handled as an
error case.

Signed-off-by: Sjur Brændeland <sjur.brandeland@...ricsson.com>
---
 net/caif/caif_dev.c |   16 +++++++++-------
 1 files changed, 9 insertions(+), 7 deletions(-)

diff --git a/net/caif/caif_dev.c b/net/caif/caif_dev.c
index 61570ee..673728a 100644
--- a/net/caif/caif_dev.c
+++ b/net/caif/caif_dev.c
@@ -146,15 +146,17 @@ void caif_flow_cb(struct sk_buff *skb)
 	spin_lock_bh(&caifd->flow_lock);
 	send_xoff = caifd->xoff;
 	caifd->xoff = 0;
-	if (!WARN_ON(caifd->xoff_skb_dtor == NULL)) {
-		WARN_ON(caifd->xoff_skb != skb);
-		dtor = caifd->xoff_skb_dtor;
-		caifd->xoff_skb = NULL;
-		caifd->xoff_skb_dtor = NULL;
-	}
+	dtor = caifd->xoff_skb_dtor;
+
+	if (WARN_ON(caifd->xoff_skb != skb))
+		skb = NULL;
+
+	caifd->xoff_skb = NULL;
+	caifd->xoff_skb_dtor = NULL;
+
 	spin_unlock_bh(&caifd->flow_lock);
 
-	if (dtor)
+	if (dtor && skb)
 		dtor(skb);
 
 	if (send_xoff)
-- 
1.7.1

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