From: Tilman Schmidt <tilman@imap.cc>
Date: Sat, 11 Oct 2014 11:46:29 +0000 (+0200)
Subject: isdn/gigaset: fix NULL pointer dereference
X-Git-Tag: fixes-against-v3.18-rc2~61^2~49^2~8
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=846ac30135e7c5e03b487c16c87ccb1ab020a01f;p=pandora-kernel.git

isdn/gigaset: fix NULL pointer dereference

In do_action, a NULL pointer might be passed to function start_dial
which will dereference it.
Fix by adding a check for NULL before the call.

Spotted with Coverity.

Signed-off-by: Tilman Schmidt <tilman@imap.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>
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