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

From: Boaz Harrosh
Date: Mon May 19 2008 - 13:46:07 EST

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..

The sense buffer *is* always cleared and it is mandated by scsi spec.
But the problem above is that the actual data buffer for read, had
garbage data, and *no* read was actually preformed do to none-standard
device response.

> It's not like pre-clearing the bugger is a performance issue.
> Linus
> --

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