linux-kernel - Re: [PATCH] enable readback to get HPET working on ATI SB4x00, kernel 2.6.35

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Message-ID: <20100715100258.GA20469@aftab>
Date:	Thu, 15 Jul 2010 12:02:58 +0200
From:	Borislav Petkov <borislav.petkov@....com>
To:	Thomas Gleixner <tglx@...utronix.de>
CC:	Stephan Wolf <stephan@...zte-bankreihe.de>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"Herrmann3, Andreas" <Andreas.Herrmann3@....com>
Subject: Re: [PATCH] enable readback to get HPET working on ATI SB4x00,
 kernel 2.6.35_rc5

From: Thomas Gleixner <tglx@...utronix.de>
Date: Thu, Jul 15, 2010 at 04:22:14AM -0400

> On Thu, 15 Jul 2010, Stephan Wolf wrote:
> > Am 14.07.2010 23:04, schrieb Thomas Gleixner:
> > 
> > > +static void __init ati_hpet_bugs(int num, int slot, int func)
> > > +{
> > > +#ifdef CONFIG_HPET_TIMER
> > > +	hpet_readback_cmp = 1;
> > > +#endif
> > > +}
> > > +
> > >   #define QFLAG_APPLY_ONCE 	0x1
> > >   #define QFLAG_APPLIED		0x2
> > >   #define QFLAG_DONE		(QFLAG_APPLY_ONCE|QFLAG_APPLIED)
> > > @@ -220,6 +236,8 @@ static struct chipset early_qrk[] __init
> > >   	  PCI_CLASS_SERIAL_SMBUS, PCI_ANY_ID, 0, ati_bugs },
> > >   	{ PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_SBX00_SMBUS,
> > >   	  PCI_CLASS_SERIAL_SMBUS, PCI_ANY_ID, 0, ati_bugs_contd },
> > > +	{ PCI_VENDOR_ID_ATI, PCI_ANY_ID,
> > > +	  PCI_CLASS_SERIAL_SMBUS, PCI_ANY_ID, 0, ati_hpet_bugs },
> > >   	{}
> > 
> > Hi, the patch above solves the problem on my machine.
> 
> Thanks for testing. 
> 
> Borislav, any opinion ?

Yep, good idea to match SMBus device class on ATI, cool. Quickly tested
on my SB700.

Acked-by: Borislav Petkov <borislav.petkov@....com>

-- 
Regards/Gruss,
Boris.

Advanced Micro Devices GmbH
Einsteinring 24, 85609 Dornach
General Managers: Alberto Bozzo, Andrew Bowd
Registration: Dornach, Gemeinde Aschheim, Landkreis Muenchen
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