linux-kernel - Re: [PATCH V2 2/5] input: keyboard: imx_sc: Add i.MX system controller power key support

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Message-ID: <20190922161401.GC1999@bug>
Date:   Sun, 22 Sep 2019 18:14:01 +0200
From:   Pavel Machek <pavel@....cz>
To:     Oleksij Rempel <o.rempel@...gutronix.de>
Cc:     Anson Huang <anson.huang@....com>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "mark.rutland@....com" <mark.rutland@....com>,
        "shawnguo@...nel.org" <shawnguo@...nel.org>,
        "s.hauer@...gutronix.de" <s.hauer@...gutronix.de>,
        "kernel@...gutronix.de" <kernel@...gutronix.de>,
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        Aisheng Dong <aisheng.dong@....com>,
        "ulf.hansson@...aro.org" <ulf.hansson@...aro.org>,
        Andy Duan <fugang.duan@....com>, Peng Fan <peng.fan@....com>,
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        Jacky Bai <ping.bai@....com>,
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        "linux-input@...r.kernel.org" <linux-input@...r.kernel.org>,
        dl-linux-imx <linux-imx@....com>
Subject: Re: [PATCH V2 2/5] input: keyboard: imx_sc: Add i.MX system
 controller power key support

Hi!

> >>Why is it global struct? It seems to be flexible configurable over devicetree.
> >>So I would assume it should be able to handle more then one button. Please
> >>remove global variables, make it allocatable per OF node.
> >
> >There is ONLY one button available for SC key, but yes, I think I can make the structure
> >private and get all necessary data from the structure using container_of.
> 
> And we will never need more then 640 kB RAM ;)
> https://en.wikiquote.org/wiki/Talk:Bill_Gates

Right question is "is it worth complicating kernel now (and making it slower/bigger)
for future flexibility?". And I believe answer is "no", but it is not a big deal
either way.								Pavel

-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html