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From: Russell King <rmk@arm.linux.org.uk>
To: Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl>
Cc: Martin Dalecki <dalecki@evision-ventures.com>,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH] 2.5.24 IDE 97
Date: Thu, 4 Jul 2002 14:29:38 +0100	[thread overview]
Message-ID: <20020704142938.D11601@flint.arm.linux.org.uk> (raw)
In-Reply-To: <Pine.SOL.4.30.0207030021060.27685-200000@mion.elka.pw.edu.pl>; from B.Zolnierkiewicz@elka.pw.edu.pl on Wed, Jul 03, 2002 at 12:22:11AM +0200

On Wed, Jul 03, 2002 at 12:22:11AM +0200, Bartlomiej Zolnierkiewicz wrote:
> This patch is a accumulation of ata-hosts-7/8/9/10/11, ata-autodma
> and ata-ata66_check patches previously posted on LKML.

>From a first review only, it looks like this patch prevents the chipset
drivers from disabling DMA mode on initialisation.  This is Really Bad(tm)
since some revisions of some chipsets must _never_ be placed into DMA
mode due to hardware bugs.  Even if the user selects CONFIG_IDEDMA_AUTO.

The code in sl82c105.c knows about the chipset revisions that this is
required for, and it looks like the code in ide-pci.c will override the
chipset if CONFIG_IDEDMA_AUTO is enabled.

-- 
Russell King (rmk@arm.linux.org.uk)                The developer of ARM Linux
             http://www.arm.linux.org.uk/personal/aboutme.html


  reply	other threads:[~2002-07-04 13:27 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-07-02 22:22 Bartlomiej Zolnierkiewicz
2002-07-04 13:29 ` Russell King [this message]
2002-07-04 14:18   ` Vojtech Pavlik
2002-07-04 14:33     ` Russell King
2002-07-04 17:44       ` Bartlomiej Zolnierkiewicz
2002-07-04 17:51         ` Benjamin Herrenschmidt
2002-07-04 21:55           ` Bartlomiej Zolnierkiewicz
2002-07-04 17:40   ` Bartlomiej Zolnierkiewicz

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