linux-kernel - Re: [PATCH v4] pch_gpio: Support interrupt function

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Message-ID: <4E12A69C.8030709@dsn.okisemi.com>
Date:	Tue, 05 Jul 2011 14:52:28 +0900
From:	Tomoya MORINAGA <tomoya-linux@....okisemi.com>
To:	Grant Likely <grant.likely@...retlab.ca>
CC:	linux-kernel@...r.kernel.org,
	alexander.stein@...tec-electronic.com, qi.wang@...el.com,
	yong.y.wang@...el.com, joel.clark@...el.com,
	kok.howg.ewe@...el.com, toshiharu-linux@....okisemi.com,
	tglx@...utronix.de
Subject: Re: [PATCH v4] pch_gpio: Support interrupt function

(2011/07/05 12:59), Grant Likely wrote:
>> As we discussed before,
>> without specifying PCH_IRQ_BASE,
>> it seemed IRQ number collision issue occurred.
>> Thus, I added PCH_IRQ_BASE.
>
> Then fix the irq collision.  If the core code hands out an irq range
> that is in-use by some other driver, then the other driver isn't
> reserving it's irqs correctly and it needs to be fixed.  Hacking
> around the problem doesn't help anything in the long run.
>

I tried to work irq_alloc_descs with dynamic allocation.(Set 2nd 
parameter as 0).
However it seems the issue remains to be seen.
I attached dmesg output log, /proc/interrupts log and modified PCH-GPIO 
source code.

Could you give me your opinion or information ?

NOTE: I tested on linux-3.0-rc3

-- 
tomoya
OKI SEMICONDUCTOR CO., LTD.

View attachment "dmesg" of type "text/plain" (69150 bytes)

View attachment "interrupts" of type "text/plain" (1555 bytes)

View attachment "pch_gpio.c" of type "text/plain" (12281 bytes)