Re: [Re: Linux 2.6.26-rc2] Write protect on on

From: James Bottomley
Date: Thu May 22 2008 - 19:43:45 EST

On Mon, 2008-05-19 at 10:27 -0700, Linus Torvalds wrote:
> On Mon, 19 May 2008, Boaz Harrosh wrote:
> >
> > Sure, inspecting other places that emulate MODE_SENSE, (And inspecting the scsi
> > spec) all zeros is a very good scsi response. Alan do you want to send a fix for all
> > places that initiate a MODE_SENSE command, specifically at
> > scsi_scan.c::scsi_unlock_floptical() ? (Some other places do)
> I was actualyl more thinking that the safest thing to do would be to just
> pre-clear the sense buffer. Then, if some driver doesn't fill it
> correctly, big deal..
> It's not like pre-clearing the bugger is a performance issue.

It already is pre cleared, for precisely the reason that some devices
lie about returning sense, so we use the zero return to mean no sense
was collected.


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