linux-kernel - Re: [PATCH 0/3] scsi: usb-storage: hide errors for five devices

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Message-ID: <20120522102555.3830d0bd@pyramind.ukuu.org.uk>
Date:	Tue, 22 May 2012 10:25:55 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Paul Bolle <pebolle@...cali.nl>
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Alan Stern <stern@...land.harvard.edu>,
	"James E.J. Bottomley" <JBottomley@...allels.com>,
	Matthew Dharm <mdharm-usb@...-eyed-alien.net>,
	linux-scsi@...r.kernel.org, usb-storage@...ts.one-eyed-alien.net,
	linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/3] scsi: usb-storage: hide errors for five devices

On Tue, 22 May 2012 10:48:34 +0200
Paul Bolle <pebolle@...cali.nl> wrote:

> On Tue, 2012-05-15 at 17:36 +0100, Alan Cox wrote:
> > Possibly we should have a hostadapter flag indicating if the cache noise
> > is expected nuisance or not. That way if hardcore SCSI on real cables
> > wants to keeep it then it can still be shut up for USB where its the
> > norm and just irrelevant noise.
> 
> 0) Nobody suggested anything else so maybe I should try to come up with
> a patch that does that. A slight problem is that I'm not at all familiar
> with the SCSI code. And I don't think I own any actual SCSI hardware.

Give it a go.. only one way to learn 8)

> 1) Anyhow: hostadapter flags? Are those perhaps the bitfields starting
> with "active_mode" in "struct Scsi_Host"?

It can probably go in the scsi_host_template. It's going to be per
adapter and fixed. It will still be accessible then via
host->hostt->whatever. That also makes it easier to set correctly.

Alan
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