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Message-ID: <002801cb5ec9$b7936a00$66f8800a@maildom.okisemi.com>
From: "Masayuki Ohtake" <masa-korg@dsn.okisemi.com>
To: "Mike Frysinger" <vapier@gentoo.org>,
        "Mark Brown" <broonie@opensource.wolfsonmicro.com>
Cc: "Andrew Morton" <akpm@linux-foundation.org>,
        "Samuel Ortiz" <sameo@linux.intel.com>,
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        "Alek Du" <alek.du@intel.com>, <richard.rojfors@mocean-labs.com>,
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        "Qi" <qi.wang@intel.com>, <andrew.chih.howe.khor@intel.com>,
        <gregkh@suse.de>, "Yong Y" <yong.y.wang@intel.com>,
        "Tomoya MORINAGA" <morinaga526@dsn.okisemi.com>,
        <joel.clark@intel.com>, <margie.foster@intel.com>,
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References: <4C80D3C8.9020204@dsn.okisemi.com> <20100903134827.GA7614@rakim.wolfsonmicro.main> <000301cb5ebc$35ad8d20$66f8800a@maildom.okisemi.com> <201009272338.23762.vapier@gentoo.org>
Subject: Re: [MeeGo-Dev][PATCH] Topcliff: Update PCH_GPIO driver to 2.6.35
Date: Tue, 28 Sep 2010 13:57:50 +0900
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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@localhost gpio]# ls
export  gpiochip244  unexport
[root@localhost gpio]# echo 1 > export
bash: echo: write error: Invalid argument
[root@localhost gpio]#

But it fails.

Could you teach me the reason/cause why?

Thanks, Ohtake(OKISemi)