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Date: Fri, 5 Aug 2011 09:01:50 +0900 From: Mark Brown <broonie@...nsource.wolfsonmicro.com> To: Stephen Warren <swarren@...dia.com> Cc: Thomas Gleixner <tglx@...utronix.de>, Liam Girdwood <lrg@...com>, Chris Ball <cjb@...top.org>, ccross@...roid.com, olof@...om.net, linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, alsa-devel@...a-project.org, linux-mmc@...r.kernel.org, linux-tegra@...r.kernel.org Subject: Re: [PATCH 1/3] irq: If an IRQ is a GPIO, request and configure it On Thu, Aug 04, 2011 at 05:00:18PM -0600, Stephen Warren wrote: > + } else { > + gpio = irq_to_gpio(irq); > + if (gpio_is_valid(gpio)) { > + ret = gpio_request(gpio, new->name); > + if (ret < 0) > + goto out_mask; > + ret = gpio_direction_input(gpio); > + if (ret < 0) > + goto out_mask; > + } If you treat failures as an error what happens when a driver is using a GPIO as both an interrupt and a GPIO? For example a driver which monitors the level on a GPIO and uses edge triggered IRQs to be notified of state changes. -- 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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