netdev - Re: [PATCH net 2/2] ptp: idt82p33: implement double dco time correction

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Message-ID: <20210624161558.GD15473@hoboy.vegasvil.org>
Date:   Thu, 24 Jun 2021 09:15:58 -0700
From:   Richard Cochran <richardcochran@...il.com>
To:     Min Li <min.li.xe@...esas.com>
Cc:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH net 2/2] ptp: idt82p33: implement double dco time
 correction

On Thu, Jun 24, 2021 at 02:40:52PM +0000, Min Li wrote:
> > What happens if user space makes a new adjustment before this completes?
> > 
> > After all, some PTP profiles update the clock several times per second.
> > 
> > Thanks,
> > Richard
> 
> Hi Richard
> 
> In that case, adjtime would simply return without doing anything as in

This is not what user space expects.

Thanks,
Richard