linux-kernel - Re: [PATCH v2] mfd: syscon: Add syscon_regmap_lookup_by_phandle

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Date:   Tue, 17 Nov 2020 12:37:41 +0000
From:   Lee Jones <lee.jones@...aro.org>
To:     Matthias Brugger <matthias.bgg@...il.com>
Cc:     Enric Balletbo i Serra <enric.balletbo@...labora.com>,
        linux-kernel@...r.kernel.org,
        Collabora Kernel ML <kernel@...labora.com>,
        Nicolas Boichat <drinkcat@...omium.org>,
        Arnd Bergmann <arnd@...db.de>
Subject: Re: [PATCH v2] mfd: syscon: Add
 syscon_regmap_lookup_by_phandle_optional() function.

On Tue, 17 Nov 2020, Matthias Brugger wrote:

> 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@...omium.org>
> > > Signed-off-by: Enric Balletbo i Serra <enric.balletbo@...labora.com>
> > > Reviewed-by: Matthias Brugger <matthias.bgg@...il.com>
> > > ---
> > > 
> > > 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.

Why can't you base it off of for-mfd-next?

https://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd.git/log/?h=for-mfd-next

-- 
Lee Jones [李琼斯]
Senior Technical Lead - Developer Services
Linaro.org │ Open source software for Arm SoCs
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