[LinuxPPS] PPS/ntpd fails on fresh startup

[Luca Bertagnolio]

Reg,

> Try putting a 'sleep 5' after the section with ppsldisc, and before starting ntpd.
>
> Its ugly, but it should work.
> The problem is that it takes the system some time to set up the ldisc, and
> it probably isnt worth trying to wait (cleanly) for this to happen.  In your
> init startup you get to the point where you need the pps device before its
> available.
>
> In any case, works for me...

it doesn't for me.  From the dmesg log, looks like ppsldisc starts to work OK
with the script sleeping for 5 seconds, then as soon as ntpd starts, the same
as before happens:

source serial1 got cdev (253:0)
new PPS source serial1 at ID 0
PPS source #0 "/dev/ttyS1" added
PPS event on source 0 at 1223337678.357389483
capture clear seq #1 for source 0
PPS clear at 70319 on source #0
PPS event on source 0 at 1223337679.157620784
capture assert seq #1 for source 0
PPS assert at 70519 on source #0
PPS event on source 0 at 1223337679.357679447
capture clear seq #2 for source 0
PPS clear at 70569 on source #0
PPS event on source 0 at 1223337680.157910748
capture assert seq #2 for source 0
PPS assert at 70769 on source #0
PPS event on source 0 at 1223337680.357969411
capture clear seq #3 for source 0
PPS clear at 70819 on source #0
PPS event on source 0 at 1223337681.158201551
capture assert seq #3 for source 0
PPS assert at 71019 on source #0
PPS event on source 0 at 1223337681.358260214
capture clear seq #4 for source 0
PPS clear at 71069 on source #0
PPS event on source 0 at 1223337682.158491515
capture assert seq #4 for source 0
PPS assert at 71269 on source #0
PPS event on source 0 at 1223337682.358550178
capture clear seq #5 for source 0
PPS clear at 71319 on source #0
PPS event on source 0 at 1223337683.158781479
capture assert seq #5 for source 0
PPS assert at 71519 on source #0
PPS event on source 0 at 1223337683.358841819
capture clear seq #6 for source 0
PPS clear at 71569 on source #0   <-------------- sleep 5 ends here
PPS_GETCAP: source 0
PPS_SETPARAMS: source 0
PPS_GETCAP: source 0
PPS_SETPARAMS: source 0
PPS_FETCH: source 0
timeout 0.000000000
PPS_FETCH: source 0
timeout 0.000000000
PPS_FETCH: source 0
timeout 0.000000000
PPS_FETCH: source 0
timeout 0.000000000

Needless to say, after stopping and restarting ntpd works fine again...

Ciao, Luca