linux-kernel - Re: NEC ND-4550A problems reading DVD-R

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Date:	Tue, 01 Mar 2011 08:48:26 -0500
From:	Mark Lord <kernel@...savvy.com>
To:	Tejun Heo <tj@...nel.org>
CC:	Krzysztof Halasa <khc@...waw.pl>, linux-ide@...r.kernel.org,
	lkml <linux-kernel@...r.kernel.org>, linux-scsi@...r.kernel.org
Subject: Re: NEC ND-4550A problems reading DVD-R

On 11-03-01 03:01 AM, Tejun Heo wrote:
..
> I think that's determined by drivers/scsi/sr.h::SR_TIMEOUT which is
> hardcoded to be 30 seconds.  Maybe it's better to move it to use the
> block parameter.  Anyways, the drive actually takes longer than 30secs
> to recognize the media?

That slow behaviour is not uncommon, especially as drives struggle
to recognize various forms of copy-protected media (DVD-Video).
A longer default, or tuneable timeout, would help.

Cheers

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