linux-kernel - Re: [PATCH v3] pch_gpio: Support interrupt function

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Date:	Wed, 22 Jun 2011 17:14:10 +0900
From:	Tomoya MORINAGA <tomoya-linux@....okisemi.com>
To:	Alexander Stein <alexander.stein@...tec-electronic.com>
CC:	Grant Likely <grant.likely@...retlab.ca>,
	linux-kernel@...r.kernel.org, qi.wang@...el.com,
	yong.y.wang@...el.com, joel.clark@...el.com,
	kok.howg.ewe@...el.com, toshiharu-linux@....okisemi.com
Subject: Re: [PATCH v3] pch_gpio: Support interrupt function

(2011/06/22 15:28), Alexander Stein wrote:
> On Wednesday 22 June 2011 02:10:28 Tomoya MORINAGA wrote:
>> (2011/06/21 18:10), Alexander Stein wrote:
>>> I wrote a small program which use poll(2) on value, after edge hase been
>>> configured from shell. I cannot test the edge detection appropriately due
>>> to debouncing using jumpers.
>>
>> Really ?
>> In out test environment, my test program could detect edge interrupt
>> correctly.
>
> My test program used poll/select on edge successfully. But I could not test
> the raising or falling feature actually, as my input is bouncing. So, it
> doesn't matter if I set both/raising/falling in edge, due to my inputs the
> effect is the same. Any input event will end in several raising and falling
> interrupts events.
> I hope I could make this more clear.

Our test program also uses poll (We don't use select().)

BTW, is the above your saying related to your patch "[PATCH] pch_gpio: 
transform mutex into spinlock" ?


-- 
tomoya
OKI SEMICONDUCTOR CO., LTD.
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