tree 79139da3ddbac8589a09ac124440d2dfeb6f1f31
parent 9f9499ae8e6415cefc4fe0a96ad0e27864353c89
author Cornelia Huck <cornelia.huck@de.ibm.com> 1449159840 +0100
committer Michael S. Tsirkin <mst@redhat.com> 1450341453 +0200

virtio/s390: handle error values in irb

The common I/O layer may pass an error value as the irb in the device's
interrupt handler (for classic channel I/O). This won't happen in
current virtio-ccw implementations, but it's better to be safe than
sorry.

Let's just return the error conveyed by the irb and clear any possible
pending I/O indications.

Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: Guenther Hutzl <hutzl@linux.vnet.ibm.com>
Reviewed-by: Pierre Morel <pmorel@linux.vnet.ibm.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>