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

[Lee Jones]

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.

-- 
Lee Jones [李琼斯]
Senior Technical Lead - Developer Services
Linaro.org │ Open source software for Arm SoCs
Follow Linaro: Facebook | Twitter | Blog