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Date: Fri, 30 Aug 2013 13:55:26 -0600 From: Stephen Warren <swarren@...dotorg.org> To: Javier Martinez Canillas <javier.martinez@...labora.co.uk> CC: Linus Walleij <linus.walleij@...aro.org>, Lars Poeschel <larsi@....tu-dresden.de>, Lars Poeschel <poeschel@...onage.de>, Grant Likely <grant.likely@...aro.org>, "linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>, Mark Rutland <mark.rutland@....com>, Ian Campbell <ian.campbell@...rix.com>, Kumar Gala <galak@...eaurora.org>, Pawel Moll <pawel.moll@....com>, Tomasz Figa <tomasz.figa@...il.com>, Enric Balletbo i Serra <eballetbo@...il.com>, Jean-Christophe PLAGNIOL-VILLARD <plagnioj@...osoft.com>, Santosh Shilimkar <santosh.shilimkar@...com>, Kevin Hilman <khilman@...aro.org>, Balaji T K <balajitk@...com>, Tony Lindgren <tony@...mide.com>, Jon Hunter <jgchunter@...il.com> Subject: Re: [PATCH v3] gpio: interrupt consistency check for OF GPIO IRQs On 08/29/2013 06:24 PM, Javier Martinez Canillas wrote: ... > We have been trying to solve this issue for a few months by now and Linus' > approach seems to be the most sensible solution to me. > > Drivers that request an IRQ and assume that platform code will request and setup > the GPIO have been broken since the boards using these drivers were migrated to > DT (e.g: smsc911x on OMAP2+ boards). That's only true if the driver for the GPIO controller is buggy. Whatever request_irq() maps down to in the GPIO/IRQ controller driver simply needs to set up the pin as an interrupt input, then it doesn't matter which order the driver does things. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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