centos man page for handle_level_irq

HANDLE_LEVEL_IRQ(9)					     Public Functions Provided					       HANDLE_LEVEL_IRQ(9)

NAME
       handle_level_irq - Level type irq handler

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

ARGUMENTS
       irq
	   the interrupt number

       desc
	   the interrupt description structure for this irq

DESCRIPTION
       Level type interrupts are active as long as the hardware line has the active level. This may require to mask the interrupt and unmask it
       after the associated handler has acknowledged the device, so the interrupt line is back to inactive.

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

       Ingo Molnar <mingo@elte.hu>
	   Author.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014						       HANDLE_LEVEL_IRQ(9)