[PATCH net] net: stmmac: allow a tc-taprio base-time of zero

[Vladimir Oltean]

On Tue, Nov 09, 2021 at 09:20:53AM +0100, Kurt Kanzenbach wrote:
> Hi Vladimir,
> 
> On Mon Nov 08 2021, Vladimir Oltean wrote:
> > Commit fe28c53ed71d ("net: stmmac: fix taprio configuration when
> > base_time is in the past") allowed some base time values in the past,
> > but apparently not all, the base-time value of 0 (Jan 1st 1970) is still
> > explicitly denied by the driver.
> >
> > Remove the bogus check.
> >
> > Fixes: b60189e0392f ("net: stmmac: Integrate EST with TAPRIO scheduler API")
> > Signed-off-by: Vladimir Oltean <vladimir.oltean at nxp.com>
> 
> I've experienced the same problem and wanted to send a patch for
> it. Thanks!
> 
> Reviewed-by: Kurt Kanzenbach <kurt at linutronix.de>

Cool. So you had that patch queued up? What other stmmac patches do you
have queued up? :) Do you have a fix for the driver setting the PTP time
every time when SIOCSHWTSTAMP is called? This breaks the UTC-to-TAI
offset established by phc2sys and it takes a few seconds to readjust,
which is very annoying.