linux-kernel - Re: [PATCH v1 09/12] i2c: tegra: Clean up probe function

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Message-ID: <20200902210611.GC1624@qmqm.qmqm.pl>
Date:   Wed, 2 Sep 2020 23:06:11 +0200
From:   Michał Mirosław <mirq-linux@...e.qmqm.pl>
To:     Dmitry Osipenko <digetx@...il.com>
Cc:     Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Laxman Dewangan <ldewangan@...dia.com>,
        Wolfram Sang <wsa@...-dreams.de>, linux-i2c@...r.kernel.org,
        linux-tegra@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1 09/12] i2c: tegra: Clean up probe function

On Mon, Aug 31, 2020 at 11:23:00PM +0300, Dmitry Osipenko wrote:
> The driver's probe function code is difficult to read and follow. This
> patch splits probe function into several logical parts that are easy to
> work with.
> 
> Signed-off-by: Dmitry Osipenko <digetx@...il.com>
> ---
>  drivers/i2c/busses/i2c-tegra.c | 398 ++++++++++++++++++++-------------
>  1 file changed, 240 insertions(+), 158 deletions(-)
[...]

I can see why you want to extract clock setup and combine DT-parsing parts,
but the rest is not that clear. At least the clock setup split should be
a separate patch, as it seems to require massive code motion.
For eg. runtime PM setup/disable or interrupt setup, I would actually suggest
to drop the parts as they make the code harder to follow (you have
a function doing nothing but calling another one).

Best Regards,
Michał Mirosław