Hi, If a particual IRQ line has been disabled (disable_irq()), what happens if the device on that IRQ line generates interrupt? Does it result in missed interrupt? And in case of Uniprocessor machine, what happens if interrupts are generated while spinlock_irq_save() etc? TIA, Rick - To unsubscribe from this list: send the line "unsubscribe linux-newbie" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.linux-learn.org/faqs