linux-kernel - Re: LibPATA code issues / 2.6.17.3 (What is the next step?)

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Date:	Fri, 14 Jul 2006 14:18:33 -0400 (EDT)
From:	Justin Piszcz <jpiszcz@...idpixels.com>
To:	Mark Lord <liml@....ca>
cc:	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Jeff Garzik <jgarzik@...ox.com>, Sander <sander@...ilis.net>,
	linux-kernel@...r.kernel.org,
	IDE/ATA development list <linux-ide@...r.kernel.org>
Subject: Re: LibPATA code issues / 2.6.17.3 (What is the next step?)



On Fri, 14 Jul 2006, Mark Lord wrote:

> Justin Piszcz wrote:
>> They are Western Digital 400* drives.
>> 
>> [4294678.049000]   Vendor: ATA       Model: WDC WD4000KD-00N  Rev: 01.0
>> [4294678.050000]   Vendor: ATA       Model: WDC WD4000KD-00N  Rev: 01.0
>> 
>> On a SiL controller, it also happens when they are on a promise controller 
>> too.
>> 
>> On Fri, 14 Jul 2006, Mark Lord wrote:
>> 
>>> Justin Piszcz wrote:
>>>> 
>>>> opcode=0x35 & opcode=0xca
>>> 
>>> Those are non-DMA WRITE opcodes.  Using PIO for I/O is pretty rare these 
>>> days,
>>> so I'm betting that this is not a hard disk device -- compactflash?
>
> Okay.  So why are we issuing PIO WRITE commands to drives that
> obviously should only be sent DMA commands by libata?
>
> Perhaps that's the bug.
>

Jeff/Alan -- ? Could this be it?
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