From: Alexey Khoroshilov <khoroshilov@ispras.ru>
Date: Mon, 24 Nov 2014 10:58:00 +0000 (+0300)
Subject: xen-netback: do not report success if backend_create_xenvif() fails
X-Git-Tag: omap-for-v3.19/fixes-for-merge-window~65^2~13
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2dd34339ac6305c4f2f4e589b858212e339d31e9;p=pandora-kernel.git

xen-netback: do not report success if backend_create_xenvif() fails

If xenvif_alloc() or xenbus_scanf() fail in backend_create_xenvif(),
xenbus is left in offline mode but netback_probe() reports success.

The patch implements propagation of error code for backend_create_xenvif().

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Acked-by: Wei Liu <wei.liu2@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

Reading git-diff-tree failed