commit 7d3ce5ab9430504b6d91027919529f68fd14af9b
author Pierre Morel <pmorel@linux.vnet.ibm.com> Fri Aug 28 11:09:32 2015 +0200
committer Michael S. Tsirkin <mst@redhat.com> Thu Jan 19 23:46:32 2017 +0200
tree d853e17383f3380973f42fd1bebc2fb3cb8c01e6
parent 47a4c49af6cc1982ce613c8ee79aab459d04c44c

virtio/s390: support READ_STATUS command for virtio-ccw

As virtio-1 introduced the possibility of the device manipulating the
status byte, revision 2 of the virtio-ccw transport introduced a means
of getting the status byte from the device via READ_STATUS. Let's wire
it up for revisions >= 2 and fall back to returning the stored status
byte if not supported.

Signed-off-by: Pierre Morel <pmorel@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>