linux-kernel - Re: [BUG] 2.6.21.1: ide-pci is not finding ide controller.

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Message-ID: <4654A375.4080807@ru.mvista.com>
Date:	Thu, 24 May 2007 00:26:29 +0400
From:	Sergei Shtylyov <sshtylyov@...mvista.com>
To:	Linas Vepstas <linas@...tin.ibm.com>
Cc:	Bartlomiej Zolnierkiewicz <bzolnier@...il.com>,
	linux-ide@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [BUG] 2.6.21.1: ide-pci is not finding ide controller.

Hello.

Linas Vepstas wrote:
> I've got a rather old x86 box that I'm booting 2.6.21.1 on;
> this kernel is not finding an ide controller on it. 

> The motherboard has 4 ide controllers total; two olde-fashioned
> ones (PIIX4, using the original 40-pin IDE ribbon cable) and two 

    You should have said "channels". PIIX4 has only one IDE controller.

> "HighPoint HPT366" controllers, taking the 80-pin cable.
> BIOS allows the two olde-fashioned channels to be enabled
> or disabled; but the HPT seems to alaways be on (I could not
> find any BIOS entry to play with them.)

> A bit of debugging localized the symptoms to drivers/ide/setup-pci.c
> It seems that there was some recent ide-pci fix that changed/fixed
> the way that pci config space is read' this "fix" breaks my recognition
> of my controller.

    Actually, it was a bug that I've introduced into drivers/ide/pci/hpt366.c 
-- the patch has been already merged into 2.6.22-rc1:

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=fdb0d72be4decaade6cedb5012ddd679a4817b5f

MBR, Sergei
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