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SubjectRe: [PATCH v3 14/23] scsi: hisi_sas: add v3 cq interrupt handler
Hi John,

sorry for dropping the ball, but your repost reminded me.

On Thu, Jun 01, 2017 at 11:36:55AM +0100, John Garry wrote:
> In the command completion code we need to check for abnormal completion due
> to underflow, but ignore it when it occurs in some commands, like inquiry.
> This is why we check for rw command - it is equivalent to !inquiry.
>
> I'll see if we can change the check to explicitly ignore certain commands
> which complete abnormally with underflow.

In general it should be up to the higher level and not the driver
to detect underflow, and that's how most (hopefully all, but I won't
bet on some older ones) of our drivers operate.

>
> > What about 32-byte CDs or things like Write Same?
> >
>
> You're talking about VARIABLE_LENGTH_CMD (opcode 0x7f) for 32-byte CDs,
> right?

Yes.

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