From: Cornelia Huck <cornelia.huck@de.ibm.com>
Date: Fri, 25 Jan 2013 14:34:16 +0000 (+0100)
Subject: s390/virtio-ccw: Fix setup_vq error handling.
X-Git-Tag: v3.9-rc1~97^2~7^2~12
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c98d3683ce675d689121147ed00e7c4af4737518;p=pandora-kernel.git

s390/virtio-ccw: Fix setup_vq error handling.

virtio_ccw_setup_vq() failed to unwind correctly on errors. In
particular, it failed to delete the virtqueue on errors, leading to
list corruption when virtio_ccw_del_vqs() iterated over a virtqueue
that had not been added to the vcdev's list.

Fix this with redoing the error unwinding in virtio_ccw_setup_vq(),
using a single path for all errors.

Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
---

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