Re: [PATCH v2] mfd: syscon: Add syscon_regmap_lookup_by_phandle_optional() function.

[Matthias Brugger]

Hi Lee,

On 13/11/2020 11:19, Lee Jones wrote:
> On Tue, 10 Nov 2020, Enric Balletbo i Serra wrote:
>
> > This adds syscon_regmap_lookup_by_phandle_optional() function to get an
> > optional regmap.
> >
> > It behaves the same as syscon_regmap_lookup_by_phandle() except where
> > there is no regmap phandle. In this case, instead of returning -ENODEV,
> > the function returns NULL. This makes error checking simpler when the
> > regmap phandle is optional.
> >
> > Suggested-by: Nicolas Boichat <drinkcat@xxxxxxxxxxxx>
> > Signed-off-by: Enric Balletbo i Serra <enric.balletbo@xxxxxxxxxxxxx>
> > Reviewed-by: Matthias Brugger <matthias.bgg@xxxxxxxxx>
> > ---
> >
> > Changes in v2:
> > - Add Matthias r-b tag.
> > - Add the explanation from the patch description to the code.
> > - Return NULL instead of -ENOTSUPP when regmap helpers are not enabled.
> >
> >   drivers/mfd/syscon.c       | 18 ++++++++++++++++++
> >   include/linux/mfd/syscon.h | 11 +++++++++++
> >   2 files changed, 29 insertions(+)
>
> Applied, thanks.

I've a series [1] that's based on this patch, could you provide a stable branch 
for it, so that I can take the series.

Thanks,
Matthias

[1] 
https://lore.kernel.org/linux-mediatek/20201030113622.201188-1-enric.balletbo@xxxxxxxxxxxxx/