Re: [Linuxptp-users] Jump of ~UTC-TAI offset after taking the interface down and up

[Keller, J. E <jac...@in...>]

> -----Original Message-----
> From: Richard Cochran [mailto:ric...@gm...]
> Sent: Tuesday, August 21, 2018 5:33 AM
> To: FUSTE Emmanuel <emm...@th...>
> Cc: lin...@li...
> Subject: Re: [Linuxptp-users] Jump of ~UTC-TAI offset after taking the interface
> down and up
> 
> I have complained about this on netdev before, but to no avail.  There
> drivers that do all of their bringup/teardown in their .open/close
> callbacks and *not* in the .probe/remove methods.  It may be that
> the HW forces implementation in some cases.
> 

I know a lot of drivers end up doing resets, and the hw reset clears their internal timer. :(

> But in at least one case, where *I* wrote a perfectly adequate PHC
> driver that sets the clock exactly once, in probe/remove, the $corp
> developers when ahead and moved that into open/close.  Brilliant.
> 

Yea, I remember this happening :(

Regards,
Jake