linux-kernel - Re: [PATCH 2/3] ide: fix drive_is_ready() for non-PCI hosts and CONFIG_IDEPCI_SHARE

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Message-ID: <472137E8.9020109@garzik.org>
Date:	Thu, 25 Oct 2007 20:42:16 -0400
From:	Jeff Garzik <jeff@...zik.org>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
CC:	Bartlomiej Zolnierkiewicz <bzolnier@...il.com>,
	linux-ide@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/3] ide: fix drive_is_ready() for non-PCI hosts and CONFIG_IDEPCI_SHARE_IRQ=y

Alan Cox wrote:
> On Fri, 26 Oct 2007 01:36:37 +0200
> Bartlomiej Zolnierkiewicz <bzolnier@...il.com> wrote:
> 
>> Need to check if the host is a PCI one before reading IDE_ALTSTATUS_REG.
>>
>> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
> 
> Umm why ? The altstatus register goes back to ST-506 and the original IBM
> XT hard disk controller card ?

I'm pretty sure there are at least a few controllers out there where the 
AltStatus/Control register block is simply non-existent.

	Jeff



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