From c10e4cafa2698dedb9b61bbf6d68f209e779cb19 Mon Sep 17 00:00:00 2001
From: Iyappan Subramanian <isubramanian@apm.com>
Date: Thu, 21 Aug 2014 13:44:48 -0700
Subject: [PATCH] net: xgene: fix possible NULL dereference in
 xgene_enet_free_desc_rings()

A NULL pointer dereference is possible for the argument ring->buf_pool
which is passed to xgene_enet_free_desc_ring(), as ring could be NULL.

And now since NULL pointers are being checked for before the calls to
xgene_enet_free_desc_ring(), might as well take advantage of them and
not call the function if the argument would be NULL.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Iyappan Subramanian <isubramanian@apm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
Reading git-format-patch failed