linux-kernel - Re: [PATCH 1/1] mfd: simple-mfd-i2c: Add support for registering devices via MFD cells

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Message-ID: <YQuV1bhnv5QHGqNR@google.com>
Date:   Thu, 5 Aug 2021 08:40:05 +0100
From:   Lee Jones <lee.jones@...aro.org>
To:     Michael Walle <michael@...le.cc>
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Mark Brown <broonie@...nel.org>
Subject: Re: [PATCH 1/1] mfd: simple-mfd-i2c: Add support for registering
 devices via MFD cells

On Thu, 05 Aug 2021, Michael Walle wrote:

> Hi Lee,
> 
> Am 2021-08-04 16:37, schrieb Lee Jones:
> > More devices are cropping up requiring only Regmap initialisation and
> > child registration functionality.  We currently only support that if
> > all required devices are represented by their own Device Tree nodes
> > complete with compatible strings.
> > 
> > However, not everyone is happy with adding empty nodes that provide no
> > additional device information into the Device Tree.
> > 
> > Rather than have a plethora of mostly empty, function-less drivers in
> > MFD, we'll support those simple cases in here instead via MFD cells.
> > 
> > Cc: Michael Walle <michael@...le.cc>
> > Cc: Mark Brown <broonie@...nel.org>
> > Signed-off-by: Lee Jones <lee.jones@...aro.org>
> > ---
> > 
> > Michael, could you please test this on your platform to ensure I
> >          didn't break anything please?
> > 
> 
> I'm getting a null pointer dereference.

Perfect.  Will fix.

Thanks for testing.

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