linux-kernel - ICH Intel PATA short cable override...

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Message-ID: <6278d2220709040537n4c96ffcagd9c25c94ddd29ca1@mail.gmail.com>
Date:	Tue, 4 Sep 2007 13:37:22 +0100
From:	"Daniel J Blueman" <daniel.blueman@...il.com>
To:	"Tejun Heo" <htejun@...il.com>, jgarzik@...ox.com
Cc:	linux-ide@...r.kernel.org,
	"Linux Kernel" <linux-kernel@...r.kernel.org>
Subject: ICH Intel PATA short cable override...

We see that in ata_piix.c, there is a whitelist for (laptop) Intel ICH
controllers with short cables, tied to specific vendor subsystem IDs.
Since my mini-ITX Ibase MI910F has the subsystem IDs specified as
Intel [1], this is unusable.

I can't find another existing mechanism to add short cable
information, to allow UDMA/66 for my on-board CF socket.

Do you suggest I cook a patch to pass a kernel argument eg 'ich=short'
or 'pata=short', or can you think of a better mechanism?

Thanks,
  Daniel

--- [1]

# lspci -vs 00:1f.2
00:1f.2 IDE interface: Intel Corporation 82801HBM/HEM (ICH8M/ICH8M-E)
SATA IDE Controller (rev 03) (prog-if 80 [Master])
        Subsystem: Intel Corporation 82801HBM/HEM (ICH8M/ICH8M-E) SATA
IDE Controller

# lspci -vns 00:1f.2
00:1f.2 0101: 8086:2828 (rev 03) (prog-if 80 [Master])
        Subsystem: 8086:2828
-- 
Daniel J Blueman
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