On Fri, Oct 26, 2018 at 03:16:47PM -0700, Vinicius Costa Gomes wrote:
> > + case PTP_SYS_OFFSET_EXTENDED:
> > + if (!ptp->info->gettimex64) {
> > + err = -EOPNOTSUPP;
> > + break;
> > + }
> > + sysoff_extended = memdup_user((void
Hi Miroslav,
Miroslav Lichvar writes:
> The PTP_SYS_OFFSET ioctl, which can be used to measure the offset
> between a PHC and the system clock, includes the total time that the
> gettime64 function of a driver needs to read the PHC timestamp.
>
> This typically involves reading of multiple PCI
