diff options
| author | Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com> | 2018-05-02 09:25:59 +0200 |
|---|---|---|
| committer | Cornelia Huck <cohuck@redhat.com> | 2018-05-29 09:27:41 +0200 |
| commit | 2c861d89ccda2fbcea9358eff9cc5f8fae548be5 (patch) | |
| tree | fd337ef9fab21ce5b064c2e2cff7c585772f7849 /drivers/s390/cio | |
| parent | s390/archrandom: Rework arch random implementation. (diff) | |
| download | linux-2c861d89ccda2fbcea9358eff9cc5f8fae548be5.tar.xz linux-2c861d89ccda2fbcea9358eff9cc5f8fae548be5.zip | |
vfio: ccw: fix error return in vfio_ccw_sch_event
If the device has not been registered, or there is work pending,
we should reschedule a sch_event call again.
Signed-off-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com>
Message-Id: <20180502072559.50691-1-bjsdjshi@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
Diffstat (limited to 'drivers/s390/cio')
| -rw-r--r-- | drivers/s390/cio/vfio_ccw_drv.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/s390/cio/vfio_ccw_drv.c b/drivers/s390/cio/vfio_ccw_drv.c index ea6a2d0b2894..770fa9cfc310 100644 --- a/drivers/s390/cio/vfio_ccw_drv.c +++ b/drivers/s390/cio/vfio_ccw_drv.c @@ -177,6 +177,7 @@ static int vfio_ccw_sch_event(struct subchannel *sch, int process) { struct vfio_ccw_private *private = dev_get_drvdata(&sch->dev); unsigned long flags; + int rc = -EAGAIN; spin_lock_irqsave(sch->lock, flags); if (!device_is_registered(&sch->dev)) @@ -187,6 +188,7 @@ static int vfio_ccw_sch_event(struct subchannel *sch, int process) if (cio_update_schib(sch)) { vfio_ccw_fsm_event(private, VFIO_CCW_EVENT_NOT_OPER); + rc = 0; goto out_unlock; } @@ -195,11 +197,12 @@ static int vfio_ccw_sch_event(struct subchannel *sch, int process) private->state = private->mdev ? VFIO_CCW_STATE_IDLE : VFIO_CCW_STATE_STANDBY; } + rc = 0; out_unlock: spin_unlock_irqrestore(sch->lock, flags); - return 0; + return rc; } static struct css_device_id vfio_ccw_sch_ids[] = { |