linux interrupt
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port->irq = UARTIntNumberGet(port->iobase);err = request_irq(port->irq, m200_uart_irq_handler, port->irqflags, m200_port->name, port);
static inline int __must_check
request_irq(unsigned int irq, irq_handler_t handler, unsigned long flags,
const char *name, void *dev)
{
return request_threaded_irq(irq, handler, NULL, flags, name, dev);
}
request_irq -> request_threaded_irq -> __setup_irq ->
request_irq /include/linux/interrupt.h
request_threaded_irq /kernel/irq/manage.c
__setup_irq /kernel/irq/manage.c
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