diff options
Diffstat (limited to 'pc-bios/s390-ccw/virtio.c')
| -rw-r--r-- | pc-bios/s390-ccw/virtio.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/pc-bios/s390-ccw/virtio.c b/pc-bios/s390-ccw/virtio.c index 1968fc6619..1bd17d4781 100644 --- a/pc-bios/s390-ccw/virtio.c +++ b/pc-bios/s390-ccw/virtio.c @@ -38,12 +38,21 @@ static void virtio_notify(struct subchannel_id schid) * Virtio functions * ***********************************************/ -static void drain_irqs(struct subchannel_id schid) +static int drain_irqs(struct subchannel_id schid) { struct irb irb = {}; + int r = 0; + while (1) { + /* FIXME: make use of TPI, for that enable subchannel and isc */ if (tsch(schid, &irb)) { - return; + /* Might want to differentiate error codes later on. */ + if (irb.scsw.cstat) { + r = -EIO; + } else if (irb.scsw.dstat != 0xc) { + r = -EIO; + } + return r; } } } |