linux-kernel - Re: [PATCH 11/11] pinctrl: plgpio: Remove redundant of_match

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Date:	Thu, 3 Oct 2013 12:37:48 +0530
From:	Viresh Kumar <viresh.kumar@...aro.org>
To:	Sachin Kamat <sachin.kamat@...aro.org>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Linus Walleij <linus.walleij@...aro.org>
Subject: Re: [PATCH 11/11] pinctrl: plgpio: Remove redundant of_match_ptr

On 3 October 2013 12:36, Sachin Kamat <sachin.kamat@...aro.org> wrote:
> On 3 October 2013 10:07, Viresh Kumar <viresh.kumar@...aro.org> wrote:
>> On 28 September 2013 17:38, Sachin Kamat <sachin.kamat@...aro.org> wrote:
>>> The data structure of_match_ptr() protects is always compiled in.
>>
>> of_match_ptr() isn't a data structure..
>
> Yes you are right. of_match_ptr() is a macro. The data structure here
> refers to its argument and not of_match_ptr() itself.
>
>>And also what does "protects" mean here?
>
> It just means that of_match_ptr()  avoids an undefined reference error
> had CONFIG_OF been used around the data structures definition by
> making the pointer NULL.
>
>>
>>> Hence of_match_ptr() is not needed.
>>>
>>> Signed-off-by: Sachin Kamat <sachin.kamat@...aro.org>
>>> Cc: Viresh Kumar <viresh.kumar@...aro.org>
>>> ---
>>>  drivers/pinctrl/spear/pinctrl-plgpio.c |    2 +-
>>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>>
>>> diff --git a/drivers/pinctrl/spear/pinctrl-plgpio.c b/drivers/pinctrl/spear/pinctrl-plgpio.c
>>> index 0a7f0bdb..ff2940e 100644
>>> --- a/drivers/pinctrl/spear/pinctrl-plgpio.c
>>> +++ b/drivers/pinctrl/spear/pinctrl-plgpio.c
>>> @@ -735,7 +735,7 @@ static struct platform_driver plgpio_driver = {
>>>                 .owner = THIS_MODULE,
>>>                 .name = "spear-plgpio",
>>>                 .pm = &plgpio_dev_pm_ops,
>>> -               .of_match_table = of_match_ptr(plgpio_of_match),
>>> +               .of_match_table = plgpio_of_match,
>>>         },
>>>  };
>>
>> Patch is okay otherwise.
>
> Hope to have your ack on this :)
> Thanks for reviewing.

Yeah I will Ack this.. but was waiting for your next version with fixed log. :)
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