linux-kernel - Re: No UDMA with BLK_DEV

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Message-ID: <20090721004811.31a79a98@lxorguk.ukuu.org.uk>
Date:	Tue, 21 Jul 2009 00:48:11 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Dwayne Rightler <drightler@...hnicalogic.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: No UDMA with BLK_DEV_IT821X with 2.6.30.2

On Mon, 20 Jul 2009 18:03:22 -0500
Dwayne Rightler <drightler@...hnicalogic.com> wrote:

> Hello,
> 
> I have a ITE8212 PCI card and it does not seem to allow UDMA on the 
> drives attached.  The drives run at ATA100 under other controllers.

The old IDE driver support for IT821x has been somewhat broken for some
time. The drivers/ata (libata) driver should handle it fully. In smart
mode it's "IDE-ish" and the old IDE code really isn't flexible enough to
cope. With the "ATAPI BIOS" its a fairly normal controller so both drivers
ought to work.
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