From: Claudiu Manoil <claudiu.manoil@freescale.com>
Date: Thu, 8 Nov 2012 22:11:41 +0000 (+0000)
Subject: gianfar: Fix alloc_skb_resources on -ENOMEM cleanup path
X-Git-Tag: omap-for-v3.8/fixes-for-merge-window-v4-signed~45^2~386
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1eb8f7a7da6d3b36fcc339d7bbddbf8315a5c1dd;p=pandora-kernel.git

gianfar: Fix alloc_skb_resources on -ENOMEM cleanup path

Should gfar_init_bds() return with -ENOMEM inside gfar_alloc_skb_resources(),
free_skb_resources() will be called twice in a row on the "cleanup" path,
leading to duplicate kfree() calls for rx_|tx_queue->rx_|tx_skbuff resulting
in segmentation fault.
This patch prevents the segmentation fault to happen in the future
(rx_|tx_sbkbuff set to NULL), and corrects the error path handling
for gfar_init_bds().

Cc: Paul Gortmaker <paul.gortmaker@windriver.com>

Signed-off-by: Claudiu Manoil <claudiu.manoil@freescale.com>
Acked-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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