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Message-ID: <58cb370e0511191116r7196828bu3790113f38f6c8ad@mail.gmail.com>
Date: Sat, 19 Nov 2005 20:16:04 +0100
From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
To: "Larry.Finger@lwfinger.net" <Larry.Finger@att.net>
Subject: Re: DMA mode locked off when via82cxxx ide driver built as module in 2.6.14
Cc: linux-kernel@vger.kernel.org
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On 11/19/05, Larry.Finger@lwfinger.net <Larry.Finger@att.net> wrote:
> My HP ze1115 notebook uses the via82cxxx ide driver. If I configure the kernel
> build to make that driver as a module, the driver is correctly added to initrd
> and is loaded at boot time; > however, DMA mode is turned off. It cannot be
> turned on even if I use an 'hdparm -d1 /dev/hda' command.
>
> Is this a bug, or do I need some kind of IDE=XXX boot command?
> As expected, system > performance in this mode is horrible.

You've probably left generic IDE support (CONFIG_IDE_GENERIC=y) compiled-in.

You need to disabled it in order to use via82cxxx as module.

Bartlomiej