linux-kernel - Re: 2.6.25-rc1/2 CD/DVD burning broken

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Message-ID: <je4pbxie3q.fsf@sykes.suse.de>
Date:	Mon, 25 Feb 2008 10:23:37 +0100
From:	Andreas Schwab <schwab@...e.de>
To:	"Kiyoshi Ueda" <k-ueda@...jp.nec.com>
Cc:	<petkovbb@...il.com>, <bzolnier@...il.com>,
	<linux-kernel@...r.kernel.org>, <jens.axboe@...cle.com>,
	<j-nomura@...jp.nec.com>
Subject: Re: 2.6.25-rc1/2 CD/DVD burning broken

"Kiyoshi Ueda" <k-ueda@...jp.nec.com> writes:

>  o Have you tried bisecting the kernel changes to find suspicious
>    commit?  If so, that information will be much appreciated.

That is close to impossible.  Intervening kernels either don't boot or
crash while burning.  Especially the one with the bad commit crashes in
cdrom_newpc_intr almost immediately when burning starts.

>  o Is this problem 100% reproducible on your Pioneer drive?

Yes.  See the comment in the growisofs sources, this sense code is
Pioneer specific.

>  o Do you get some messages from kernel like "DMA error" when
>    the problem happens?

Never.

Andreas.

-- 
Andreas Schwab, SuSE Labs, schwab@...e.de
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
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