[Linux-stm32] [PATCH net] net: stmmac: allow a tc-taprio base-time of zero

[Vladimir Oltean]

On Tue, Nov 09, 2021 at 03:19:28PM +0100, Ahmad Fatoum wrote:
> Hello Vladimir, Kurt,
> 
> On 09.11.21 11:35, Vladimir Oltean wrote:
> > 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.
> 
> Sounds like the same issue in:
> https://lore.kernel.org/netdev/20201216113239.2980816-1-h.assmann@pengutronix.de/
> 
> Cheers,
> Ahmad

Indeed. Was there a v2 to that?