From: sjur.brandeland@stericsson.com <sjur.brandeland@stericsson.com>
Date: Tue, 17 Jan 2012 03:03:14 +0000 (+0000)
Subject: caif: Remove bad WARN_ON in caif_dev
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=59f608d84f937cb5e2fd3a0b9f848f200d47ba85;p=linux-beck.git

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@stericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/caif/caif_dev.c b/net/caif/caif_dev.c
index 61570ee76fe6..673728add60b 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)