linux-kernel - Re: [PATCH v9 1/2] mrst: export get_gpio_by

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Message-ID: <20110328110053.5355badb@feng-i7>
Date:	Mon, 28 Mar 2011 11:00:53 +0800
From:	Feng Tang <feng.tang@...el.com>
To:	Arjan van de Ven <arjan@...ux.intel.com>
CC:	"Lu, Guanqun" <guanqun.lu@...el.com>,
	"meego-kernel@...ts.meego.com" <meego-kernel@...ts.meego.com>,
	"alan@...ux.intel.com" <alan@...ux.intel.com>,
	"Wu, Fengguang" <fengguang.wu@...el.com>,
	"Fu, Michael" <michael.fu@...el.com>,
	"Wang, Xingchao" <xingchao.wang@...el.com>,
	"Koul, Vinod" <vinod.koul@...el.com>,
	"Kp, Jeeja" <jeeja.kp@...el.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	"Ingo Molnar" <mingo@...hat.com>, "H. Peter Anvin" <hpa@...or.com>,
	"x86@...nel.org" <x86@...nel.org>,
	Feng Tang <feng.tang@...ux.intel.com>,
	Jacob Pan <jacob.jun.pan@...ux.intel.com>,
	Jekyll Lai <jekyll_lai@...tron.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v9 1/2] mrst: export get_gpio_by_name() function

Hi Arjan,

On Mon, 28 Mar 2011 10:47:23 +0800
Arjan van de Ven <arjan@...ux.intel.com> wrote:

> On 3/27/2011 7:47 PM, Feng Tang wrote:
> > On Mon, 28 Mar 2011 10:34:22 +0800
> > Arjan van de Ven<arjan@...ux.intel.com>  wrote:
> >
> >> On 3/27/2011 7:29 PM, Lu Guanqun wrote:
> >>> Export get_gpio_by_name() function and make its name more focused.
> >>> We are doing this because currently get_gpio_by_name() is only
> >>> used by the devices exported from SFI DEVS table, but it is also
> >>> useful for other PCI devices which also use the GPIO lines, and
> >>> have their gpio infos in the SFI GPIO table.
> >>>
> >> I can't say that I like the new name... at all.
> >>
> >> what's "mid" ?
> >> what is wrong with the original name????
> >>
> > Hi Arjan,
> >
> > The original get_gpio_by_name() is static and only used in mrst.c
> > as it's mrst/mfld specific. So if we call it from a PCI driver,
> > that name sounds
> 
> get_gpio_by_name() would be a very good generic name for a function 
> provided by the gpio layer as well.

Yes, the "get_gpio_by_name" name itself is very generic, but it's
implementation is not in the GPIO core, but inside the mrst.c and
bound to Moorestown/Medfield platforms.

> 
> > like a platform independent general API while it's actually
> > mrst/mfld bound. So we would show this dependency from the function
> > name.
> that makes no sense.
> and again, what on earth is a "mid"??????????

Sorry for missed it in last email, "mid" stands for Mobile Internet Device,
Moorestown/Medfield platform are defined as MID, and this name is already
used by some driver files.

Thanks,
Feng
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