handle_edge_irq man page on Scientific

handle_edge_irq man page on Scientific

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HANDLE_EDGE_IRQ(9)	  Internal 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 occurence 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 assosiacted 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 2.6.	 November 2013		    HANDLE_EDGE_IRQ(9)

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