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Re: [MIPS] SMTC: Fix crash on bootup with idebus= command line argument.

To: Chris Dearman <chris@mips.com>
Subject: Re: [MIPS] SMTC: Fix crash on bootup with idebus= command line argument.
From: Ralf Baechle <ralf@linux-mips.org>
Date: Tue, 4 Sep 2007 13:50:10 +0100
Cc: Atsushi Nemoto <anemo@mba.ocn.ne.jp>, linux-mips@linux-mips.org
In-reply-to: <46DC2D2E.8080408@mips.com>
Original-recipient: rfc822;linux-mips@linux-mips.org
References: <S20024438AbXHGQ1m/20070807162742Z+2733@ftp.linux-mips.org> <20070904.000501.41013092.anemo@mba.ocn.ne.jp> <46DC2D2E.8080408@mips.com>
Sender: linux-mips-bounce@linux-mips.org
User-agent: Mutt/1.5.14 (2007-02-12)
On Mon, Sep 03, 2007 at 04:50:06PM +0100, Chris Dearman wrote:

> Atsushi Nemoto wrote:
> >Why pci_get_class() in ide_default_io_base() cause crash on SMTC?
> 
> The bug wasn't really SMTC specific, it was just that it showed up on 
> SMTC builds. The failure was caused by the early parsing of the 
> idebus=xx argument. The argument parser ended up calling
> pci_scan that unconditionally enabled interrupts prematurely.

Which at the time did also happen for x86 - it just happened to be a
harmless bug there.

  Ralf

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