Messages in this thread | | | Date | Fri, 5 Aug 2011 09:01:50 +0900 | From | Mark Brown <> | Subject | Re: [PATCH 1/3] irq: If an IRQ is a GPIO, request and configure it |
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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.
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