From: Thomas Graf <tgraf@redhat.com>
Date: Thu, 22 Dec 2011 02:05:07 +0000 (+0000)
Subject: mqprio: Avoid panic if no options are provided
X-Git-Tag: v3.2-rc7~7^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7838f2ce36b6ab5c13ef20b1857e3bbd567f1759;p=pandora-kernel.git

mqprio: Avoid panic if no options are provided

Userspace may not provide TCA_OPTIONS, in fact tc currently does
so not do so if no arguments are specified on the command line.
Return EINVAL instead of panicing.

Signed-off-by: Thomas Graf <tgraf@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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