[LinuxPPS] Which patch to use?

[Jordan Hayes]

>> I am patching against 2.6.24.7
>
> 2.6.24.7 is OK for now.
> -ter applies OK on 2.6.25. No hurry to go to .25 yet.

> Keep us updated!

Ok, this morning the compile was finished, so I installed and rebooted. 
Following http://wiki.enneenne.com/index.php/LinuxPPS_support

# tree /sys/class/pps
/sys/class/pps
|-- pps0
|   |-- assert
|   |-- clear
|   |-- dev
|   |-- echo
|   |-- mode
|   |-- name
|   |-- path
|   |-- power
|   |   `-- wakeup
|   |-- subsystem -> ../../../class/pps
|   `-- uevent

I don't see a "device" the way the wiki says.

Next I did

# ./ppsctl /dev/ttyS0 enable
# ./ppstest /dev/pps0

... and that gives me assert/clear pairs.

I applied the patch to ntp-4.2.2p4 ntpd/refclock_nmea.c, ran configure, 
then make.  I put this in my /etc/ntp.conf:

server 127.127.20.0 prefer minpoll 4
fudge 127.127.20.0 flag3 1 flag2 0 time1 0.0

I moved /usr/sbin/ntpd out of the way and put the new one in there, but 
"/etc/init.d/ntp restart" didn't like the new binary (probably a 
command-line issue, the default debian one has a very different output 
of -v leading me to think it's something other than 4.2.4 ...  If I run 
it manually, I get this error message:

ntpd[22954]: refclock_open /dev/gps0: No such file or directory
ntpd[22954]: configuration of 127.127.20.0 failed

Is /dev/gps0 supposed to be a symlink or something?

Thanks,

/jordan