From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Jens Rottmann <JRottmann@LiPPERTEmbedded.de>
Cc: linux-parport@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] parport_pc: after superio probing restore original register values
Date: Mon, 15 Jun 2009 22:58:26 +0100 [thread overview]
Message-ID: <20090615225826.63c26c18@lxorguk.ukuu.org.uk> (raw)
In-Reply-To: <4A368600.5030009@LiPPERTEmbedded.de>
On Mon, 15 Jun 2009 19:33:52 +0200
Jens Rottmann <JRottmann@LiPPERTEmbedded.de> wrote:
> CONFIG_PARPORT_PC_SUPERIO probes for various superio chips by writing
> byte sequences to a set of different potential I/O ranges. But the
> probed ranges are not exclusive to parallel ports. Some of our boards
> just happen to have a watchdog in one of them. Took us almost a week
> to figure out why some distros reboot without warning after running
> flawlessly for 3 hours. For exactly 170 = 0xAA minutes, that is ...
Ouch - that must have been a pig to find.
> Fixed by restoring original values after probing. Also fixed too small
> request_region() in detect_and_report_it87().
>
> Signed-off-by: Jens Rottmann <JRottmann@LiPPERTEmbedded.de>
Will queue for Linus
Alan
prev parent reply other threads:[~2009-06-15 21:57 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-15 17:33 Jens Rottmann
2009-06-15 21:58 ` Alan Cox [this message]
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