Re: RTC Inappropriate ioctl for device

[Randy.Dunlap]

Aurélien GÉRÔME wrote:
> Hi,
>
> Having CONFIG_RTC=y, I tried on x86 the rtctest program found in
> linux-2.6.10/Documentation/rtc.txt. However, it failed at:
>
> ioctl(fd, RTC_UIE_ON, 0);
>
> with:
>
> ioctl: Inappropriate ioctl for device
>
> Did I miss something? Maybe something else conflicts with CONFIG_RTC?
>
> Cheers.

Do you have an HPET timer enabled?  That could cause a conflict.

Does /proc/interrupts report rtc interrupts increasing when you
run rtctest?
I.e., does the number of this line increase like this?

  8:        131    IO-APIC-edge  rtc

rtctest works for me (2.6.11-rc4).  Maybe send me the strace
output when you run rtctest and your .config file.
Oh, and your kernel boot log, maybe there are some rtc driver
messages in it.

--
~Randy
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