linux-kernel - Re: [MeeGo-Dev][PATCH] Topcliff: Update PCH

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Date:	Tue, 28 Sep 2010 13:57:50 +0900
From:	"Masayuki Ohtake" <masa-korg@....okisemi.com>
To:	"Mike Frysinger" <vapier@...too.org>,
	"Mark Brown" <broonie@...nsource.wolfsonmicro.com>
Cc:	"Andrew Morton" <akpm@...ux-foundation.org>,
	"Samuel Ortiz" <sameo@...ux.intel.com>,
	"Randy Dunlap" <randy.dunlap@...cle.com>,
	"Alek Du" <alek.du@...el.com>, <richard.rojfors@...ean-labs.com>,
	<meego-dev@...go.com>,
	"ML linux-kernel" <linux-kernel@...r.kernel.org>,
	"Qi" <qi.wang@...el.com>, <andrew.chih.howe.khor@...el.com>,
	<gregkh@...e.de>, "Yong Y" <yong.y.wang@...el.com>,
	"Tomoya MORINAGA" <morinaga526@....okisemi.com>,
	<joel.clark@...el.com>, <margie.foster@...el.com>,
	<kok.howg.ewe@...el.com>
Subject: Re: [MeeGo-Dev][PATCH] Topcliff: Update PCH_GPIO driver to 2.6.35

Hi Mike and Mark,

Thanks for your help.

But, I've got a bit of problem again.
I have modified for GPIO standard I/F referring other accepted GPIO driver.

According to Documentation/gpio.txt,
I tried to create GPIO node like below.

[root@...alhost gpio]# ls
export  gpiochip244  unexport
[root@...alhost gpio]# echo 1 > export
bash: echo: write error: Invalid argument
[root@...alhost gpio]#

But it fails.

Could you teach me the reason/cause why?

Thanks, Ohtake(OKISemi)



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