From: Michael S. Tsirkin <mst@redhat.com>
Date: Sun, 9 Nov 2014 23:04:29 +0000 (+1030)
Subject: virtio_blk: fix race at module removal
X-Git-Tag: omap-for-v3.19/fixes-rc1~52^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=46652a861b46cc62e9d983d5cf6d9532cd6fccab;p=pandora-kernel.git

virtio_blk: fix race at module removal

If a device appears while module is being removed,
driver will get a callback after we've given up
on the major number.

In theory this means this major number can get reused
by something else, resulting in a conflict.

To fix, cleanup in reverse order of initialization.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Ming Lei <ming.lei@canonical.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
---

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