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

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Message-ID: <jey79if252.fsf@sykes.suse.de>
Date:	Mon, 18 Feb 2008 21:19:53 +0100
From:	Andreas Schwab <schwab@...e.de>
To:	Kiyoshi Ueda <k-ueda@...jp.nec.com>
Cc:	bzolnier@...il.com, linux-kernel@...r.kernel.org,
	jens.axboe@...cle.com, petkovbb@...il.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:

> Could you try this patch?
> I've only done a compile test, so this patch may not work.
>
> During the conversion to blk_end_request, the code was changed
> *not* to set rq->data_len = 0.
> I removed that part because I thought it was just a trigger to
> call post_transform_command().  However, since data_len can be
> used as a residual length of the transfer, it might have to remain
> there.
> Actually, wodim seems checking the residual count how far it wrote
> (e.g. wodim/wodim.c:write_track_data()).
>
> This patch brings back the rq->data_len = 0.

Looks good, I was successfully able to burn a CD-RW.

Thanks, Andreas.

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