Re: [PATCH net v2 1/1] net: dsa: microchip: make sure drive strength configuration is not lost by soft reset
From: Oleksij Rempel
Date: Thu Mar 07 2024 - 04:03:26 EST
Hi Jakub,
On Wed, Mar 06, 2024 at 07:03:39AM +0100, Oleksij Rempel wrote:
> On Wed, Mar 06, 2024 at 03:29:32AM +0000, Arun.Ramadoss@xxxxxxxxxxxxx wrote:
> > Hi Jakub,
> >
> > On Tue, 2024-03-05 at 19:14 -0800, Jakub Kicinski wrote:
> > > EXTERNAL EMAIL: Do not click links or open attachments unless you
> > > know the content is safe
> > >
> > > On Tue, 5 Mar 2024 07:48:02 +0100 Oleksij Rempel wrote:
> > > > This driver has two separate reset sequence in different places:
> > > > - gpio/HW reset on start of ksz_switch_register()
> > > > - SW reset on start of ksz_setup()
> > > >
> > > > The second one will overwrite drive strength configuration made in
> > > > the
> > > > ksz_switch_register().
> > > >
> > > > To fix it, move ksz_parse_drive_strength() from
> > > > ksz_switch_register() to
> > > > ksz_setup().
> > > >
> > > > Fixes: d67d7247f641 ("net: dsa: microchip: Add drive strength
> > > > configuration")
> > > > Signed-off-by: Oleksij Rempel <o.rempel@xxxxxxxxxxxxxx>
> > >
> > > Hm, this is much larger than I anticipated, and also doesn't apply,
> > > so there will be conflict with -next. Andrew, should we go back to
> > > the v1?
> >
> > Suggestion: Instead of moving ksz_parse_drive_strength() from end of
> > file to above, can we move ksz_setup() & ksz_teardown() down. So that
> > the changes will be minimal. Will that work?
>
> This will make it hard portable to stable too. As alternative I can
> offer to use v1 patch for stable and send bigger patch for next after
> in the next net-next window.
Are any changes on my side required?
Regards,
Oleksij
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