[OASIS Issue Tracker] (VIRTIO-116) ccw transport needs to allow failing WRITE_STATUS

[OASIS Issues Tracker <workgroup_mailer@lists.oasis-open.org>]

     [ https://issues.oasis-open.org/browse/VIRTIO-116?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Michael Tsirkin updated VIRTIO-116:
-----------------------------------

    Proposal: 
Failure scenarios for driver and device need to be documented:
- driver must check for failures of WRITE_STATUS and treat device as unusable
- device must post failure of WRITE_STATUS if the driver tries to set a wrong state

Proposed patch: (updated)
https://lists.oasis-open.org/archives/virtio/201502/msg00014.html

Old proposal (listed here for completenes, please ignore for voting purposes):
https://lists.oasis-open.org/archives/virtio/201410/msg00031.html

  was:
Failure scenarios for driver and device need to be documented:
- driver must check for failures of WRITE_STATUS and treat device as unusable
- device must post failure of WRITE_STATUS if the driver tries to set a wrong state

Proposed patch: (updated)
https://lists.oasis-open.org/archives/virtio/201502/msg00014.html

Old proposal:
https://lists.oasis-open.org/archives/virtio/201410/msg00031.html


> ccw transport needs to allow failing WRITE_STATUS
> -------------------------------------------------
>
>                 Key: VIRTIO-116
>                 URL: https://issues.oasis-open.org/browse/VIRTIO-116
>             Project: OASIS Virtual I/O Device (VIRTIO) TC
>          Issue Type: Bug
>    Affects Versions: virtio 1.0 csprd01, virtio 1.0 csprd02, virtio 1.0 csprd03, virtio 1.0 cs01
>         Environment: Cornelia Huck <cornelia.huck@de.ibm.com> 
>            Reporter: Cornelia Huck
>            Assignee: Cornelia Huck
>             Fix For: virtio 1.0 cs03
>
>
> The WRITE_STATUS ccw command needs to be able to fail, e.g. when the driver wants to set FEATURES_OK  but the device can't work with the features.



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