Re: RTC Chip and IRQ8 on 2.6.9

[Florian Schmidt]

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?

flo
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