linux-kernel - Re: 2.6.31.4: WARNING: at arch/x86/kernel/hpet.c:390 hpet_next_event+0x70/0x80() [occurs when ACPI

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Message-ID: <alpine.DEB.2.00.0911171750420.3800@p34.internal.lan>
Date:	Tue, 17 Nov 2009 17:53:12 -0500 (EST)
From:	Justin Piszcz <jpiszcz@...idpixels.com>
To:	"Pallipadi, Venkatesh" <venkatesh.pallipadi@...el.com>
cc:	Thomas Gleixner <tglx@...utronix.de>,
	john stultz <johnstul@...ibm.com>,
	lkml <linux-kernel@...r.kernel.org>,
	Arjan van de Ven <arjan@...radead.org>
Subject: Re: 2.6.31.4: WARNING: at arch/x86/kernel/hpet.c:390
 hpet_next_event+0x70/0x80() [occurs when ACPI_PROCESSOR=y]



On Tue, 17 Nov 2009, Pallipadi, Venkatesh wrote:

> On Tue, Nov 17, 2009 at 03:45:31AM -0800, Justin Piszcz wrote:
> +		WARN_ON_ONCE((u32)hpet_readl(HPET_Tn_CMP(timer)) != cnt);
>
> 	return (s32)((u32)hpet_readl(HPET_COUNTER) - cnt) >= 0 ? -ETIME : 0;
> }
> -- 
> 1.6.0.6

Hi, that omits the message @ boot and you are correct, all is/continues to work fine.

Thanks..

As far as the DP55KG reboots, the workaround is set append="reboot=a" -
will a BIOS fix address this (other) issue? Try rebooting Linux without 
any special parameters (2.6.30+) and the DP55KG will hang at reboot
(note, shutdown does shut the machine off).

Justin.

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