Re: JMS567 USB3.0 scsi scan error

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Am Montag, den 10.07.2017, 16:26 -0400 schrieb Alan Stern:
> On Mon, 10 Jul 2017, Oliver Neukum wrote:
> 
> > > > The old storage driver unconditionally limits inquiries to 36 bytes. UAS does not
> > > > have that limit. That seems to be a bit optimistic. Could you test the attached patch?
> > > 
> > > If there's no particular benefit to 96-byte inquiries, it would be 
> > 
> > Interesting. Why do we make them at all?
> 
> I don't know.  Presumably they do provide useful information for some 
> devices, but I'm not aware of what that information is -- you'd have to 
> ask the SCSI people.

I was told to respect the <censored> standards.
The extended data is vendor specific. There is no way to know how
important it is.

> What I really had in mind was whether a 96-byte inquiry provides any 
> benefit for USB mass-storage devices.  Again, I don't know the answer.

We need to look at UAS to SCSI bridges. And they have a point. We cannot
punish everybody who does it right, just because there is one known broken
drive. So I would leave the quirk in.

	Regards
		Oliver

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