linux-kernel - Re: [RFC PATCH 4/7] pinctrl: sunxi: remove redundant "depends on RESET

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Date:	Mon, 16 Nov 2015 12:40:09 +0900
From:	Masahiro Yamada <yamada.masahiro@...ionext.com>
To:	Linus Walleij <linus.walleij@...aro.org>
Cc:	Vishnu Patekar <vishnupatekar0510@...il.com>,
	"linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Hans de Goede <hdegoede@...hat.com>,
	Chen-Yu Tsai <wens@...e.org>,
	Philipp Zabel <p.zabel@...gutronix.de>,
	Maxime Ripard <maxime.ripard@...e-electrons.com>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [RFC PATCH 4/7] pinctrl: sunxi: remove redundant "depends on RESET_CONTROLLER"

Hi Linus

2015-11-05 22:40 GMT+09:00 Linus Walleij <linus.walleij@...aro.org>:
> On Thu, Nov 5, 2015 at 12:15 PM, Masahiro Yamada
> <yamada.masahiro@...ionext.com> wrote:
>
>> ARCH_SUNXI selects RESET_CONTROLLER.
>> The dependency "depends on RESET_CONTROLLER" is already met.
>>
>> Signed-off-by: Masahiro Yamada <yamada.masahiro@...ionext.com>
>
> NACK, this pin controller needs that as dependency, I don't worry
> that it's overspecified.
>
> They both do this:
> #include <linux/reset.h>
>
> And the object should specify its dependencies, not rely on them
> being implicitly available.
>
> The dep is there for human readers too, not just machines. And to
> them, this is helpful information.

How strict we should follow this rule?

Many drivers depend on OF, but do they all have "depends on OF"?





-- 
Best Regards
Masahiro Yamada
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