linux-kernel - Re: [RESEND]: RE: [PATCH v2 3/3] pch

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Message-ID: <20110607172211.GF17754@ponder.secretlab.ca>
Date:	Tue, 7 Jun 2011 11:22:11 -0600
From:	Grant Likely <grant.likely@...retlab.ca>
To:	Tomoya MORINAGA <tomoya-linux@....okisemi.com>
Cc:	linux-kernel@...r.kernel.org,
	alexander.stein@...tec-electronic.com, qi.wang@...el.com,
	yong.y.wang@...el.com, toshiharu-linux@....okisemi.com,
	kok.howg.ewe@...el.com, joel.clark@...el.com
Subject: Re: [RESEND]: RE: [PATCH v2 3/3] pch_gpio: support interrupt function

On Tue, Jun 07, 2011 at 03:00:48PM +0900, Tomoya MORINAGA wrote:
> Hi Grant,
> 
> Let me resend again.
> I haven't received your answer the following my question yet.
> 
> On Friday, May 27, 2011 4:09 PM, Grant Likely wrote:
> > Take a look at the new irq_chip_generic infrastructure.  You don't
> > need to implement a memory mapped irq controller from scratch anymore.
> > Most of the access functions can be taken directly from
> > irq_chip_generic instead.
> 
> Let me clarify your saying.
>   a) We shouldn't use request_irq( ) ?
>   b) Does Your  "irq_chip_generic" mean irq_set_handler_data( ) /
> irq_set_chained_handler( ) ?
>       If yes, Using these functions, I saw IRQ shared other function's
> interrupt becomes invalid.
> 

No, I'm saying that you don't need to implement new irq_chip
operations if you use the new irq_chip_generic implementation.

g.
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