linux-kernel - Re: [PATCH v3 01/11] i2c: Export of_i2c_get_board

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Message-ID: <20180325121932.6b0e5e5f@bbrezillon>
Date:   Sun, 25 Mar 2018 12:19:32 +0200
From:   Boris Brezillon <boris.brezillon@...tlin.com>
To:     Wolfram Sang <wsa@...-dreams.de>
Cc:     linux-i2c@...r.kernel.org, Jonathan Corbet <corbet@....net>,
        linux-doc@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Arnd Bergmann <arnd@...db.de>,
        Przemyslaw Sroka <psroka@...ence.com>,
        Arkadiusz Golec <agolec@...ence.com>,
        Alan Douglas <adouglas@...ence.com>,
        Bartosz Folta <bfolta@...ence.com>,
        Damian Kos <dkos@...ence.com>,
        Alicja Jurasik-Urbaniak <alicja@...ence.com>,
        Cyprian Wronka <cwronka@...ence.com>,
        Suresh Punnoose <sureshp@...ence.com>,
        Rafal Ciepiela <rafalc@...ence.com>,
        Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>,
        Nishanth Menon <nm@...com>, Rob Herring <robh+dt@...nel.org>,
        Pawel Moll <pawel.moll@....com>,
        Mark Rutland <mark.rutland@....com>,
        Ian Campbell <ijc+devicetree@...lion.org.uk>,
        Kumar Gala <galak@...eaurora.org>, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Vitor Soares <Vitor.Soares@...opsys.com>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Xiang Lin <Xiang.Lin@...aptics.com>,
        linux-gpio@...r.kernel.org,
        Boris Brezillon <boris.brezillon@...e-electrons.com>
Subject: Re: [PATCH v3 01/11] i2c: Export of_i2c_get_board_info()

Hi Wolfram,

On Sat, 24 Mar 2018 23:35:18 +0100
Wolfram Sang <wsa@...-dreams.de> wrote:

> Hi Boris,
> 
> > - rebase on v4.15-rc1  
> 
> This code has changed a little meanwhile. Please check my for-next
> branch. Some changes are identical, some similar.

Actually it was rebased on top of v4.16-rc1, but I'll check if this
patch applies correctly on top of your for-next branch.

> 
> > -	info.archdata = &dev_ad;  
> 
> Why did you drop this?

Well, this line could have been moved in of_i2c_register_device(), but
I realized dev_ad was zero initialized without any further
modification, and leaving info->archdata to NULL has the exact same
effect (see [1]).

Regards,

Boris

[1]https://elixir.bootlin.com/linux/v4.16-rc6/source/drivers/i2c/i2c-core-base.c#L711

-- 
Boris Brezillon, Bootlin (formerly Free Electrons)
Embedded Linux and Kernel engineering
https://bootlin.com