[LinuxPPS] kernel does not see PPS on serial port

LICHTENBERGER Janos lityi at sas.elte.hu
Fri Mar 7 12:13:20 CET 2008


>
> It seems that on IRQ 4 there are no drivers registered... strange...
>
> Look at my system:
>
> giometti at jeeg:~$ cat /proc/interrupts
>            CPU0
>   0:      44169    XT-PIC-XT        timer
>   1:          2    XT-PIC-XT        i8042
>   2:          0    XT-PIC-XT        cascade
>   4:          1    XT-PIC-XT        serial
>   6:          3    XT-PIC-XT        floppy
>   9:          0    XT-PIC-XT        ohci_hcd:usb1
>  10:        809    XT-PIC-XT        eth0
>  12:          4    XT-PIC-XT        i8042
>  14:       3926    XT-PIC-XT        ide0
> NMI:          0   Non-maskable interrupts
> LOC:          0   Local timer interrupts
> RES:          0   Rescheduling interrupts
> CAL:          0   function call interrupts
> TLB:          0   TLB shootdowns
> TRM:          0   Thermal event interrupts
> SPU:          0   Spurious interrupts
> ERR:          0
> MIS:          0
>
> as you can see I got "serial" on the last column.
>

You are right, this is funny... Though I have not find any specific module
missing, here are the serial port related modules:

8250                   30628  0
serial_core            20352  1 8250
pps_core               12808  2 8250,serial_core

Ciao,


Janos

-- 
Dr. János Lichtenberger
Space Research Group,
Eötvös University,
Budapest, Pf 32 H-1518 Hungary
Tel: +36-1-372 2934
Fax: +36-1-372 2927



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