netdev - Re: [PATCH 3/5] net: fec: initialize clock with 0 rather than current kernel time

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Date:   Wed, 8 Jul 2020 04:04:44 -0700
From:   Richard Cochran <richardcochran@...il.com>
To:     Vladimir Oltean <olteanv@...il.com>
Cc:     Sergey Organov <sorganov@...il.com>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, Fugang Duan <fugang.duan@....com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Subject: Re: [PATCH  3/5] net: fec: initialize clock with 0 rather than
 current kernel time

On Mon, Jul 06, 2020 at 06:27:21PM +0300, Vladimir Oltean wrote:
> There's no correct answer, I'm afraid. Whatever the default value of the
> clock may be, it's bound to be confusing for some reason, _if_ the
> reason why you're investigating it in the first place is a driver bug.
> Also, I don't really see how your change to use Jan 1st 1970 makes it
> any less confusing.

+1

For a PHC, the user of the clock must check the PTP stack's
synchronization flags via the management interface to know the status
of the time signal.

Thanks,
Richard