linux-kernel - Re: [PATCH] i2c: pxa: move header file out of deprecated i2c folder

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Date:   Sun, 29 Oct 2017 18:52:57 +0100
From:   Wolfram Sang <wsa@...-dreams.de>
To:     Robert Jarzmik <robert.jarzmik@...e.fr>
Cc:     linux-i2c@...r.kernel.org, Eric Miao <eric.y.miao@...il.com>,
        Haojian Zhuang <haojian.zhuang@...il.com>,
        Russell King <linux@...linux.org.uk>,
        Daniel Mack <daniel@...que.org>,
        Marek Vasut <marek.vasut@...il.com>,
        Philipp Zabel <philipp.zabel@...il.com>,
        Paul Parsons <lost.distance@...oo.com>,
        Jonathan Cameron <jic23@....ac.uk>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] i2c: pxa: move header file out of deprecated i2c folder

Hi Robert,

I had a look again at this patch.

> > include/linux/i2c is deprecated because too many platform_data of i2c
> > clients incorrectly ended up there. The few still relevant include files
> > for I2C bus masters with their platform_data have been moved to the
> > platform_data directory. This final one, PXA, is not entirely
> > platform_data, so it is simply moved one layer up. After that, the i2c
> > subfolder can finally go soon.
> >
> > Signed-off-by: Wolfram Sang <wsa@...-dreams.de>
>
> I'm sorry I completely missed this one.
> Either it's too late and trash this mail, or it's not, and then I'd suggest
> another approach :
>  - patch 1 : move include/linux/i2c/pxa-i2c.h to include/platform_data/i2c-pxa.h
>    (i2c-pxa.h and not pxa-i2c.h to be consistent)
>  - patch 2 : move this chunk to arch/arm/mach-pxa/devices.h
> > extern void pxa_set_i2c_info(struct i2c_pxa_platform_data *info);
> > 
> > #ifdef CONFIG_PXA27x
> > extern void pxa27x_set_i2c_power_info(struct i2c_pxa_platform_data *info);
> > #endif
> > 
> > #ifdef CONFIG_PXA3xx
> > extern void pxa3xx_set_i2c_power_info(struct i2c_pxa_platform_data *info);
> > #endif
> 
> This is the cleanest approach I could think of.

Wouldn't it be even cleaner if patch 1 & 2 above would be swapped? First
move the chunk, then rename the file?

And is there a branch I should base this on? Currently, I am thinking of
basing this patch on for-next and then submit it around rc1 time.

Does that make sense to you?

Regards,

   Wolfram


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