linux-kernel - Re: [PATCH v5] i2c-gpio: add devicetree support

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Message-ID: <4D5B6AF2.8060104@wytron.com.tw>
Date:	Wed, 16 Feb 2011 14:13:06 +0800
From:	Thomas Chou <thomas@...ron.com.tw>
To:	Grant Likely <grant.likely@...retlab.ca>
CC:	Ben Dooks <ben-linux@...ff.org>, linux-kernel@...r.kernel.org,
	nios2-dev@...c.et.ntust.edu.tw,
	devicetree-discuss@...ts.ozlabs.org, linux-i2c@...r.kernel.org,
	Albert Herranz <albert_herranz@...oo.es>
Subject: Re: [PATCH v5] i2c-gpio: add devicetree support

Hi Grant,

On 02/16/2011 01:49 PM, Grant Likely wrote:
> On Mon, Feb 14, 2011 at 10:30:10AM +0800, Thomas Chou wrote:
>> From: Albert Herranz<albert_herranz@...oo.es>
>>
>> This patch adds devicetree support to i2c-gpio driver. The allocation
>> of local data is integrated to a private structure, and use devm_*
>> helper for easy cleanup.
>>
>> It is base on an earlier patch for gc-linux from
>> Albert Herranz<albert_herranz@...oo.es>.
>>
>> Signed-off-by: Thomas Chou<thomas@...ron.com.tw>
>> CC: Albert Herranz<albert_herranz@...oo.es>
>> Acked-by: Haavard Skinnemoen<hskinnemoen@...il.com>
>
> One minor nitpick below, but I'd be fine with cleaning that up via a
> followup patch.  This one looks correct to me.
>
> Acked-by: Grant Likely<grant.likely@...retlab.ca>
>
> Ben, this one depends on a patch in my devicetree/next tree.  How do
> you want to handle it?
>
> g.
>

Thanks a lot.

>> +#ifdef CONFIG_OF
>> +#include<linux/of_gpio.h>
>
> Instead of putting the include here, please add #ifdef CONFIG_OF
> protection around the contents of linux/of_gpio.h itself.  I fully
> support that change so that includes can remain at the top where they
> belong.

Then, my earlier patch on Jan 31, might be another solution. This way 
of_gpio.h can be included at the top, and those of_gpio users will be 
optimized out when of or of_gpio is not configured.

[PATCH 2/3] of: of_gpiochip_add is needed only for gpiolib

Cheers,
Thomas

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