handle_edge_irq(9) centos man page | unix.com

HANDLE_EDGE_IRQ(9)					     Public Functions Provided						HANDLE_EDGE_IRQ(9)

NAME
       handle_edge_irq - edge type IRQ handler

SYNOPSIS
       void handle_edge_irq(unsigned int irq, struct irq_desc * desc);

ARGUMENTS
       irq
	   the interrupt number

       desc
	   the interrupt description structure for this irq

DESCRIPTION
       Interrupt occures on the falling and/or rising edge of a hardware signal. The occurrence is latched into the irq controller hardware and
       must be acked in order to be reenabled. After the ack another interrupt can happen on the same source even before the first one is handled
       by the associated event handler. If this happens it might be necessary to disable (mask) the interrupt depending on the controller
       hardware. This requires to reenable the interrupt inside of the loop which handles the interrupts which have arrived while the handler was
       running. If all pending interrupts are handled, the loop is left.

AUTHORS
       Thomas Gleixner <tglx@linutronix.de>
	   Author.

       Ingo Molnar <mingo@elte.hu>
	   Author.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014							HANDLE_EDGE_IRQ(9)