linux-kernel - Re: 2.6.24-rc5: tape drive not responding

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Message-ID: <alpine.LSU.0.999999.0712182207570.5289@kai.makisara.local>
Date:	Tue, 18 Dec 2007 22:18:10 +0200 (EET)
From:	Kai Makisara <Kai.Makisara@...umbus.fi>
To:	James Bottomley <James.Bottomley@...elEye.com>
cc:	Andrew Morton <akpm@...ux-foundation.org>,
	John Stoffel <john@...ffel.org>, fujita.tomonori@....ntt.co.jp,
	linux-kernel@...r.kernel.org, linux-scsi@...r.kernel.org,
	Boaz Harrosh <bharrosh@...asas.com>
Subject: Re: 2.6.24-rc5: tape drive not responding

On Mon, 17 Dec 2007, James Bottomley wrote:

> 
> On Mon, 2007-12-17 at 13:43 -0800, Andrew Morton wrote:
> > On Mon, 17 Dec 2007 16:02:02 -0500
> > "John Stoffel" <john@...ffel.org> wrote:
> > 
> > > 
> > > Just to confirm, the propsed patch to st.c fixes the issue with
> > > 2.6.24-rc5 as well at 2.6.24-rc5-mm1 with access to my DLT tape
> > > drives.
> > 
> > err, what patch to st.c?
> 
> That's this one:
> 
> http://git.kernel.org/?p=linux/kernel/git/jejb/scsi-misc-2.6.git;a=commit;h=acdd0b1c371b2fbb4b6110a51ba69cb0af9e6f45
> 
I have done some tests. Firstly, I did not see the BUG with 2.6.24-rc5. 
Looking at include/linux/scatterlist.h suggested that CONFIG_DEBUG_SG has 
something to do with this. When enabled SG debugging, I also saw the BUG. 
Adding this patch solved the problem.

You can add

Acked-by: Kai Makisara <Kai.Makisara@...umbus.fi>

if you want. This fix should be included in 2.6.24.

-- 
Kai
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