From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Sun, 19 May 2013 08:36:36 +0000 (+0000)
Subject: isdn/kcapi: fix a small underflow
X-Git-Tag: v3.10-rc3~18^2~21
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=25dff94ff9df40d4d663bb6ea3193a7758cc50e5;p=pandora-kernel.git

isdn/kcapi: fix a small underflow

In get_capi_ctr_by_nr() and get_capi_appl_by_nr() the parameter comes
from skb->data.  The current code can underflow to one space before the
start of the array.

The sanity check isn't needed in __get_capi_appl_by_nr() but I changed
it to match the others.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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