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Date: Wed, 3 Oct 2007 10:48:51 +1000
From: Paul Mackerras <paulus@samba.org>
To: tony@bakeyournoodle.com (Tony Breeds)
Subject: Re: [PATCH v3 2/4] Implement generic time of day clocksource for
	powerpc machines.
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	<20070921145212.7e8a7b89.sfr@canb.auug.org.au>
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Cc: Stephen Rothwell <sfr@canb.auug.org.au>,
	Thomas Gleixner <tglx@linutronix.de>,
	Realtime Kernel <linux-rt-users@vger.kernel.org>, linuxppc-dev@ozlabs.org
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Tony Breeds writes:

> @@ -982,6 +906,10 @@ void __init time_init(void)
>  
>  	write_sequnlock_irqrestore(&xtime_lock, flags);
>  
> +	/* Register the clocksource, if we're not running on iSeries */
> +	if (!firmware_has_feature(FW_FEATURE_ISERIES))
> +		clocksource_init();

This breaks the 32-bit compile.

Is it possible to adjust the frequency of a clocksource after it has
been registered?  Or could the timebase clocksource be unregistered
and reregistered in iSeries_tb_recal?

Paul.