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SubjectRE: [PATCH][i386] HPET setup, duplicate HPET_T0_CMP needed for some platforms
Date
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>-----Original Message-----
>From: linux-kernel-owner@vger.kernel.org
>[mailto:linux-kernel-owner@vger.kernel.org] On Behalf Of
>Giuseppe Bilotta
>Sent: Sunday, February 06, 2005 7:59 AM
>To: linux-kernel@vger.kernel.org
>Subject: Re: [PATCH][i386] HPET setup, duplicate HPET_T0_CMP
>needed for some platforms
>
>Venkatesh Pallipadi wrote:
>> + /*
>> + * Some systems seems to need two writes to HPET_T0_CMP,
>> + * to get interrupts working
>> + */
>> + hpet_writel(tick, HPET_T0_CMP);
>> hpet_writel(tick, HPET_T0_CMP);
>
>Is it known which platforms require two, and which ones require
>one write? Is it cost-effective to #if CONFIG_ the second
>write?

Additional write should not be performace critical, as this code is
called
only once, during boot up (and again during system suspend-resume).

Thanks,
Venki
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