NSLU2_PB_GPIO 291 arch/arm/mach-ixp4xx/nslu2-setup.c if (request_irq(gpio_to_irq(NSLU2_PB_GPIO), &nslu2_power_handler, NSLU2_PB_GPIO 295 arch/arm/mach-ixp4xx/nslu2-setup.c gpio_to_irq(NSLU2_PB_GPIO));