Date: Sat, 12 Jan 2008 13:25:26 -0600
From: Robert Hancock <hancockr@shaw.ca>
Subject: Re: PROBLEM REMAINS: [sata_nv ADMA breaks ATAPI] Crash on accessing
 DVD-RAM
In-reply-to: <47887982.6050805@mail.ru>
To: Alexander <aledin@mail.ru>
Cc: linux-kernel@vger.kernel.org, ide <linux-ide@vger.kernel.org>,
       Jeff Garzik <jeff@garzik.org>, Tejun Heo <htejun@gmail.com>
Message-id: <47891426.1020604@shaw.ca>
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References: <fa.krOVfyFmB2aqGjJIoHCLmQxecWc@ifi.uio.no>
 <478702C7.80401@shaw.ca> <47887982.6050805@mail.ru>
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Alexander wrote:
> Robert Hancock wrote:
>> There's this patch which was intended to fix it:
>>
>> http://lkml.org/lkml/2007/11/22/148
> 
> I applied this patch to 2.6.24-rc7. Now at boot time my DVD-RW is
> normaly detected as:
> 
> sr0: scsi3-mmc drive: 48x/48x writer dvd-ram cd/rw xa/form2 cdda tray
> 
> But I cannot mount it. All my attempts failed with
> 
> ISOFS: Unable to identify CD-ROM format.
> 
> With mem<=4098M or sata_nv.adma=0 it still mounts and works ok.

As I wrote, it would appear that somehow the blk_queue_bounce_limit 
setting that the driver has made is not being respected and the block 
layer is still trying to feed it addresses over 4GB. Any ideas anyone?
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