From: Heinz Graalfs <graalfs@linux.vnet.ibm.com>
Date: Mon, 28 Oct 2013 23:10:47 +0000 (+1030)
Subject: virtio_net: verify if queue is broken after virtqueue_get_buf()
X-Git-Tag: v3.13-rc1~82^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=047b9b94951dba2e93c65a582ae2bce25c960b86;p=pandora-kernel.git

virtio_net: verify if queue is broken after virtqueue_get_buf()

If a virtqueue_get_buf() call returns a NULL pointer a possibly endless while
loop should be avoided by checking for a broken virtqueue.

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