linux-kernel - Re: x86: Fix HPET for Fujitsu u9200

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Message-ID: <20081216193843.GD843@elte.hu>
Date:	Tue, 16 Dec 2008 20:38:43 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Janne Kulmala <janne.t.kulmala@....fi>
Cc:	x86@...nel.org, linux-kernel@...r.kernel.org,
	"Pallipadi, Venkatesh" <venkatesh.pallipadi@...el.com>
Subject: Re: x86: Fix HPET for Fujitsu u9200


* Janne Kulmala <janne.t.kulmala@....fi> wrote:

> HPET timer is listed in the ACPI table, but needs a quirk entry in order 
> to work. Unfortunately, the quirk code runs after first HPET 
> hpet_enable() which has already determined that the timer doesn't work 
> (reads 0xFFFFFFFF). This patch allows hpet_enable() to be called again 
> after running the quirk code.
>
> Signed-off-by: Janne Kulmala <janne.t.kulmala@....fi>

applied to tip/timers/hpet, thanks Janne!

Venki, is this new hpet force-enable quirk entry generally OK:

 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_1,
                         ich_force_enable_hpet);
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_4,
+                        ich_force_enable_hpet);

i guess it's OK since we enable hpet on ICH8_1 already. Should we perhaps 
convert these quirks somehow to some ">= threshold_version" condition, 
instead of having to enumerate everything?

	Ingo
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