tree a14c5275a701b1453447f3e7fa3a529ce08de994
parent 22ef37eed673587ac984965dc88ba94c68873291
author Ian Campbell <ian.campbell@citrix.com> 1242714348 +0200
committer Jens Axboe <jens.axboe@oracle.com> 1242714348 +0200

xen/blkfront: allow xenbus state transition to Closing->Closed  when not Connected

This situation can occur when attempting to attach a block device whose
backend is an empty physical CD-ROM driver. The backend in this case
will go directly from the Initialising state to Closing->Closed.
Previously this would result in a NULL pointer deref on info->gd
(xenbus_dev_fatal does not return as a1a15ac5 seems to expect)

Cc: stable@kernel.org
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>