From: Michael S. Tsirkin <mst@redhat.com>
Date: Tue, 14 Oct 2014 23:52:30 +0000 (+1030)
Subject: virtio_blk: enable VQs early
X-Git-Tag: fixes-against-v3.18-rc2~57^2~13
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7a11370e5e6c26566904bb7f08281093a3002ff2;p=pandora-kernel.git

virtio_blk: enable VQs early

virtio spec requires drivers to set DRIVER_OK before using VQs.
This is set automatically after probe returns, virtio block violated this
rule by calling add_disk, which causes the VQ to be used directly within
probe.

To fix, call virtio_device_ready before using VQs.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
---

Reading git-diff-tree failed