tree 63f2a818e6c45b0f862ca6be9171e57694993b5d
parent 2ba5af42a7b59ef01f9081234d8855140738defd
author Iyappan Subramanian <isubramanian@apm.com> 1408653888 -0700
committer David S. Miller <davem@davemloft.net> 1408731925 -0700

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>