[PATCH 1/6] cxlflash: Reset command ioasc

[Matthew R. Ochs]

On Thu, Jan 04, 2018 at 05:33:48PM +1100, Andrew Donnellan wrote:
> On 04/01/18 09:54, Uma Krishnan wrote:
> >In the event of a command failure, cxlflash returns the failure to the
> >upper layers to process. After processing the error, when the command is
> >queued again, the private command structure will not be zeroed and the
> >ioasc could be stale. Per the SISLite specification, the AFU only sets the
> >ioasc in the presence of a failure. Thus, even though the original command
> >succeeds the second time, the command is considered a failure due to stale
> >ioasc. This cycle repeats indefinitely and can cause a hang or IO failure.
> >
> >To fix the issue, clear the ioasc before queuing any command.
> >
> >Fixes: 479ad8e9d48c ("scsi: cxlflash: Remove zeroing of private command
> >data")
> >Signed-off-by: Uma Krishnan <ukrishn at linux.vnet.ibm.com>
> 
> Should this go to stable?

Not a bad idea.