free_irq man page on Oracle

free_irq man page on Oracle

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FREE_IRQ(9)		   Public Functions Provided		   FREE_IRQ(9)

NAME
       free_irq - free an interrupt allocated with request_irq

SYNOPSIS
       void free_irq(unsigned int irq, void * dev_id);

ARGUMENTS
       irq
	   Interrupt line to free

       dev_id
	   Device identity to free

DESCRIPTION
       Remove an interrupt handler. The handler is removed and if the
       interrupt line is no longer in use by any driver it is disabled. On a
       shared IRQ the caller must ensure the interrupt is disabled on the card
       it drives before calling this function. The function does not return
       until any executing interrupts for this IRQ have completed.

       This function must not be called from interrupt context.

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

       Ingo Molnar <mingo@elte.hu>
	   Author.

COPYRIGHT
Kernel Hackers Manual 3.8.	   June 2014			   FREE_IRQ(9)

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