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From: Thomas Gleixner <tglx@linutronix.de>
To: Carlos Corbacho <cathectic@slackadelic.com>
Cc: linux-kernel@vger.kernel.org,
	Mikko Tiihonen <mikko.tiihonen@iki.fi>,
	Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Subject: Re: nVidia HPET force enable - merge requirements? (resend)
Date: Fri, 19 Oct 2007 18:19:37 +0200 (CEST)	[thread overview]
Message-ID: <alpine.LFD.0.9999.0710191736280.22770@localhost.localdomain> (raw)
In-Reply-To: <200710191629.11526.cathectic@slackadelic.com>

On Fri, 19 Oct 2007, Carlos Corbacho wrote:
> Would the following patch be more acceptable then? I've limited the device
> id's to just the nForce 4 chipset, because that's the only one I have here
> to test with at the moment - it appears to work fine:

Yes, looks good. It is just missing the resume part, which is
necessary to reenable the hpet after suspend/resume.
 
> hpet clockevent registered
> hpet0: at MMIO 0xfefff000, IRQs 2, 8, 31
> hpet0: 3 32-bit timers, 25000000 Hz
> Time: hpet clocksource has been installed.
> Switched to high resolution mode on CPU 0
> Switched to high resolution mode on CPU 1
> 
> At the moment, I'm not clear on how to detect if the HPET has not been
> enabled by the BIOS (but given that this is hidden behind hpet=force,
> would this be acceptable, since the user would have to explicitly call
> hpet=force, and then it either works or doesn't?)

Don't worry. If HPET is enabled in the BIOS, then we have an
hpet_address already before we come into the force enable
quirk. That's why we check for hpet_address in the quirk code.

     tglx


  reply	other threads:[~2007-10-19 16:19 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-10-19  3:23 Carlos Corbacho
2007-10-19  6:50 ` Thomas Gleixner
2007-10-19 15:29   ` Carlos Corbacho
2007-10-19 16:19     ` Thomas Gleixner [this message]
2007-10-19 17:51       ` [PATCH] x86: Force enable HPET for CK804 (nForce 4) chipsets Carlos Corbacho
2007-10-19 17:58         ` Thomas Gleixner
2007-10-19 18:07           ` [PATCH] x86: Fix resume for nVidia and force_hpet Carlos Corbacho
2007-10-19 18:15             ` Thomas Gleixner
2007-10-19 18:34               ` x86: Add HPET force support for MCP55 (nForce 5) chipsets Carlos Corbacho

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