From: Heinz Graalfs <graalfs@linux.vnet.ibm.com>
Date: Mon, 28 Oct 2013 23:10:30 +0000 (+1030)
Subject: virtio_blk: verify if queue is broken after virtqueue_get_buf()
X-Git-Tag: v3.13-rc1~82^2~6
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7f03b17d5c3f3b63dcacf0e481cf94c9d07267ab;p=pandora-kernel.git

virtio_blk: verify if queue is broken after virtqueue_get_buf()

In case virtqueue_get_buf() returned with a NULL pointer verify if the
virtqueue is broken in order to leave while loop.

Signed-off-by: Heinz Graalfs <graalfs@linux.vnet.ibm.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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