Messages in this thread | | | Date | Thu, 12 Oct 2006 15:29:19 -0700 | From | "Zhao Forrest" <> | Subject | HPET char device can't work in 2.6.18 |
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Hi Robert,
After 2.6.18 booted on my machine, there's a device file for hpet: /dev/hpet.But when I read this device file, I got the error: cat: /dev/hpet: Input/output error
In dmesg, I found some error messages related to hpet: hpet_resources: 0xfed00000 is busy hpet_acpi_add: no address or irqs in _CRS
Also there're some not-error-messages about hpet: time.c: Using 25.000000 MHz WALL HPET GTOD HPET timer. time.c: Detected 2613.696 MHz processor. ........ hpet0: at MMIO 0xfed00000 (virtual 0xffffffffff5fe000), IRQs 2, 8, 31 hpet0: 3 32-bit timers, 25000000 Hz
I guess maybe there's only one hpet timer in system, so after kernel use one, the hpet char device driver can't find a free hpet timer anymore. Am I right?
The full dmesg is attached.
Thanks, Forrest [unhandled content-type:application/x-gzip] | |