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Date: Fri, 14 Dec 2007 12:46:50 +0900
From: Tejun Heo <htejun@gmail.com>
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To: linux-kernel@vger.kernel.org, Jeff Garzik <jeff@garzik.org>,
       Tejun Heo <htejun@gmail.com>
Subject: Re: ATAPI/pata_amd regression
References: <20071212151025.GA21445@moesenspecht.in.y0ur.4ss>
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Friedrich Göpel wrote:
> Hi,
> 
> While testing 2.6.24-rc5 I noticed my Plextor DVD writer locking up as
> soon I start k3b (KDE CD burning app) with the following:
> 
>  ata5.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 frozen
>  ata5.00: cmd a0/00:00:00:08:00/00:00:00:00:00/a0 tag 0 pio 8 in
>           cdb ac 00 00 00 00 00 00 00  00 01 03 00 00 00 00 00
>           res 58/00:02:00:08:00/00:00:00:00:00/a0 Emask 0x2 (HSM violation)
>  ata5.00: status: { DRDY DRQ }
>  ata5: soft resetting link
>  ata5.00: qc timeout (cmd 0xa1)
>  ata5.00: failed to IDENTIFY (I/O error, err_mask=0x4)
>  ata5.00: revalidation failed (errno=-5)
>  ata5: failed to recover some devices, retrying in 5 secs
>  ata5: port is slow to respond, please be patient (Status 0x80)
>  ata5: device not ready (errno=-16), forcing hardreset
>  ata5: soft resetting link
>  ata5.00: qc timeout (cmd 0xa1)
>  ata5.00: failed to IDENTIFY (I/O error, err_mask=0x4)
>  ata5.00: revalidation failed (errno=-5)
>  ata5: failed to recover some devices, retrying in 5 secs
>  ata5: port is slow to respond, please be patient (Status 0x80)
>  ata5: device not ready (errno=-16), forcing hardreset
>  ata5: soft resetting link
>  ata5.00: qc timeout (cmd 0xa1)
>  ata5.00: failed to IDENTIFY (I/O error, err_mask=0x4)
>  ata5.00: revalidation failed (errno=-5)
>  ata5.00: disabled
>  ata5: port is slow to respond, please be patient (Status 0x80)
>  ata5: device not ready (errno=-16), forcing hardreset
>  ata5: soft resetting link
>  ata5: EH complete
> 
> 
> Whereas doing the same on .23 just yields:
> 
>  ata5.00: 16 bytes trailing data
>  ata5.00: 16 bytes trailing data
>  ata5.00: 16 bytes trailing data
>  ata5.00: 16 bytes trailing data
> 
> 
> On .24 the drive is completely irresponsive afterwards, until I reboot.
> Burning a DVD from a terminal with growisofs works though, if I don't start k3b.

Known problem.  Patches posted.

http://thread.gmane.org/gmane.linux.ide/26215

-- 
tejun