linux-kernel - RE: [PATCH 1/1] gpio: gpio-mxs: remove the duplicated micro define

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Date:	Wed, 16 Nov 2011 03:37:53 +0000
From:	Dong Aisheng-B29396 <B29396@...escale.com>
To:	Dong Aisheng-B29396 <B29396@...escale.com>,
	Stephen Warren <swarren@...dia.com>,
	Dong Aisheng <dong.aisheng@...aro.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
CC:	"grant.likely@...retlab.ca" <grant.likely@...retlab.ca>,
	"arnd@...db.de" <arnd@...db.de>,
	"s.hauer@...gutronix.de" <s.hauer@...gutronix.de>,
	Guo Shawn-R65073 <r65073@...escale.com>,
	"kernel@...gutronix.de" <kernel@...gutronix.de>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>
Subject: RE: [PATCH 1/1] gpio: gpio-mxs: remove the duplicated micro define

> -----Original Message-----
> From: Dong Aisheng-B29396
> Sent: Wednesday, November 16, 2011 11:31 AM
> To: 'Stephen Warren'; Dong Aisheng; linux-kernel@...r.kernel.org
> Cc: grant.likely@...retlab.ca; arnd@...db.de; s.hauer@...gutronix.de; Guo
> Shawn-R65073; kernel@...gutronix.de
> Subject: RE: [PATCH 1/1] gpio: gpio-mxs: remove the duplicated micro
> define
> 
>  -----Original Message-----
> > From: linux-kernel-owner@...r.kernel.org [mailto:linux-kernel-
> > owner@...r.kernel.org] On Behalf Of Stephen Warren
> > Sent: Wednesday, November 16, 2011 2:42 AM
> > To: Dong Aisheng; linux-kernel@...r.kernel.org
> > Cc: grant.likely@...retlab.ca; arnd@...db.de; s.hauer@...gutronix.de;
> > Guo Shawn-R65073; kernel@...gutronix.de
> > Subject: RE: [PATCH 1/1] gpio: gpio-mxs: remove the duplicated micro
> > define
> >
> > Dong Aisheng wrote at Tuesday, November 15, 2011 2:55 AM:
> > ...
> > > diff --git a/drivers/gpio/gpio-mxs.c b/drivers/gpio/gpio-mxs.c
> > ...
> > > -#define MXS_SET		0x4
> > > -#define MXS_CLR		0x8
> >
> > If the long-term direction on MXS is to move to gpiolib, won't
> It looks gpio-mxs driver is already using gpiolib.
> 
> > MX_SET_ADDR etc. and the inline functions that use it eventually be
> > removed from mach-mxs/include/mach/mxs.h hence requiring the #define
> > be moved back into the GPIO driver?
> >
> Yes, i agree with you.
> Eventually we will remove using <mach/mxs.h>.
> Thanks for the comments.
> 
Sorry for missing Linux-arm-kernel list. Add it.
BTW, one concern is that if we move defines like #define MXS_SET into driver,
then every drivers wanting to use it will define it respectively which will
cause a little code duplication.
Not sure if people would like it.

Regards
Dong Aisheng


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