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Date: Wed, 27 Jun 2007 02:45:01 -0400
From: Jeff Garzik <jeff@garzik.org>
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To: Alan Cox <alan@lxorguk.ukuu.org.uk>
CC: akpm@osdl.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] HPT374 is UDMA100 not UDMA133
References: <20070622141728.34b1b91c@the-village.bc.nu>
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Alan Cox wrote:
> Propogate change from drivers/ide
> 
> Signed-off-by: Alan Cox <alan@redhat.com>
> 
> diff -u --new-file --recursive --exclude-from /usr/src/exclude linux.vanilla-2.6.22-rc4-mm2/drivers/ata/pata_hpt37x.c linux-2.6.22-rc4-mm2/drivers/ata/pata_hpt37x.c
> --- linux.vanilla-2.6.22-rc4-mm2/drivers/ata/pata_hpt37x.c	2007-06-07 14:26:08.000000000 +0100
> +++ linux-2.6.22-rc4-mm2/drivers/ata/pata_hpt37x.c	2007-06-14 12:58:22.000000000 +0100
> @@ -931,13 +931,13 @@
>  		.udma_mask = 0x7f,
>  		.port_ops = &hpt372_port_ops
>  	};
> -	/* HPT374 - UDMA133 */
> +	/* HPT374 - UDMA100 */
>  	static const struct ata_port_info info_hpt374 = {
>  		.sht = &hpt37x_sht,
>  		.flags = ATA_FLAG_SLAVE_POSS,
>  		.pio_mask = 0x1f,
>  		.mwdma_mask = 0x07,
> -		.udma_mask = 0x7f,
> +		.udma_mask = 0x3f,

applied manually, since this does not apply to any upstream tree. 
Please diff against upstream or libata-dev.git...