From: Matthew Garrett <mjg@redhat.com>
To: Peter Mahlknecht <mali100@gmx.net>
Cc: linux-acpi@vger.kernel.org
Subject: Re: ACPI reads wrong temperature
Date: Sun, 2 Nov 2008 09:25:41 +0000 [thread overview]
Message-ID: <20081102092541.GE10983@srcf.ucam.org> (raw)
In-Reply-To: <20081031210913.3180@gmx.net>
On Fri, Oct 31, 2008 at 10:09:13PM +0100, Peter Mahlknecht wrote:
> Thanks for the hint. I get the wrong temperatures after loading the
> lm90 module (hwmon driver), but also if i load em28xx_cx25843, which
> is a part of the driver for my tv-card. Both modules depend on
> i2c-core, so probably the bug is related to the i2c bus?
In the lm90 case it's almost certainly because you have the firmware and
Linux trying to access the chip at the same time. Since it has indexed
registers, this fails very miserably. I'm surprised that the TV card
driver has any effect - it should be on an entirely spearate i2c bus.
Are you sure you don't have lm90 loaded in that case?
--
Matthew Garrett | mjg59@srcf.ucam.org
next prev parent reply other threads:[~2008-11-02 9:25 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-31 14:02 ACPI reads wrong temperature Peter Mahlknecht
2008-10-31 14:30 ` Matthew Garrett
2008-10-31 21:09 ` Peter Mahlknecht
2008-11-02 9:25 ` Matthew Garrett [this message]
2008-11-02 11:31 ` Peter Mahlknecht
2008-11-03 2:05 ` Zhao Yakui
2008-11-03 9:01 ` Peter Mahlknecht
2008-11-03 14:50 ` Zhao, Yakui
2008-11-03 14:57 ` Matthew Garrett
2008-11-03 17:47 ` Len Brown
2008-11-03 17:48 ` Matthew Garrett
2008-11-06 6:12 ` Zhao Yakui
2008-11-06 9:11 ` Matthew Garrett
2008-11-12 22:20 ` Thomas Renninger
2008-11-12 22:27 ` Matthew Garrett
2008-11-13 10:24 ` Jean Delvare
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