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Subject: Re: [2.6.18-rc2-mm1] libata: DMA speed too slow for cdrecord
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: "J.A." =?ISO-8859-1?Q?Magall=F3n?= <jamagallon@ono.com>
Cc: "Linux-Kernel," <linux-kernel@vger.kernel.org>, linux-ide@vger.kernel.org
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Date: Mon, 31 Jul 2006 12:09:01 +0100
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Ar Sad, 2006-07-29 am 23:54 +0200, ysgrifennodd J.A. Magallón:
> ata1: PATA max UDMA/100 cmd 0x1F0 ctl 0x3F6 bmdma 0xF000 irq 14

Chip configuration reports OK
> scsi0 : ata_piix
> ata1.00: ATAPI, max UDMA/33
> ata1.01: ATAPI, max MWDMA0, CDB intr
> ata1.00: configured for PIO3
> ata1.01: configured for PIO3

Your tree appears to have the old speed setting code in it not the new
speed setting code. As a result of this it tries to set both to MWDMA0
which isn't available on the ICH chips and so falls back to PIO3.