Re: RTC Chip and IRQ8 on 2.6.9

From: Florian Schmidt
Date: Sun Nov 14 2004 - 07:27:38 EST

On Fri, 12 Nov 2004 11:47:10 -0500 (EST)
linux-os <linux-os@xxxxxxxxxxxxxxxxxx> wrote:

> I must use the RTC and IRQ8 in a driver being ported from
> 2.4.20 to 2.6.9. When I attempt request_irq(8,...), it
> returns -EBUSY. I have disabled everything in .config
> that has "RTC" in it.
> The RTC interrupt is used to precisely time the sequencing
> of a precision A/D converter. It is mandatory that I use
> it because the precise interval is essential for its
> IIR filter that produces 20 bits of resolution from a
> 16 bit A/D.
> 8: 1 IO-APIC-edge rtc

maybe it's the HPET timer providing rtc emulation?

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