linux-kernel - Re: [PATCH 01/10] pinctrl: mediatek: data struct optimize and remove unused member

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Date:	Tue, 19 May 2015 10:49:19 +0200
From:	Linus Walleij <linus.walleij@...aro.org>
To:	Hongzhou Yang <hongzhou.yang@...iatek.com>
Cc:	Rob Herring <robh+dt@...nel.org>,
	Matthias Brugger <matthias.bgg@...il.com>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Russell King <linux@....linux.org.uk>,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will.deacon@....com>,
	Samuel Ortiz <sameo@...ux.intel.com>,
	Lee Jones <lee.jones@...aro.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Eddie Huang <eddie.huang@...iatek.com>,
	Howard Chen <ibanezchen@...il.com>,
	Ashwin Chaugule <ashwin.chaugule@...aro.org>,
	"Joe.C" <yingjoe.chen@...iatek.com>,
	Chaotian Jing <chaotian.jing@...iatek.com>,
	Fabian Frederick <fabf@...net.be>,
	Maoguang Meng <maoguang.meng@...iatek.com>,
	Axel Lin <axel.lin@...ics.com>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	linux-mediatek@...ts.infradead.org,
	"linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>,
	srv_heupstream@...iatek.com, Sascha Hauer <kernel@...gutronix.de>,
	dandan.he@...iatek.com
Subject: Re: [PATCH 01/10] pinctrl: mediatek: data struct optimize and remove
 unused member

On Thu, May 14, 2015 at 3:35 AM, Hongzhou Yang
<hongzhou.yang@...iatek.com> wrote:

> From: Yingjoe Chen <yingjoe.chen@...iatek.com>
>
> struct mtk_desc_pin.chip, mtk_pinctrl_devdata.invser_offset
> and mtk_pinctrl_devdata.chip_type are never used in code.
> Remove them.
>
> Some per-pin data are using int for pin number and offsets.
> Change to short and rearrange to reduce const data size.
>
> Signed-off-by: Yingjoe Chen <yingjoe.chen@...iatek.com>
> Signed-off-by: Hongzhou Yang <hongzhou.yang@...iatek.com>

Patch applied.

However I suggest you use:

unsigned int => u32
unsigned short => u16
unsigned char => u8

These kernel-specific types are more to the point,
you immediately see how many bits they use, so a
patch chaning all of the types to u32/u16/u8 would
be welcome.

Yours,
Linus Walleij
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