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Commit b019e573 authored by Kevin Hilman's avatar Kevin Hilman Committed by Ingo Molnar
Browse files

genirq: add unlocked version of set_irq_handler() 



Add unlocked version for use by irq_chip.set_type handlers which may
wish to change handler to level or edge handler when IRQ type is
changed.

The normal set_irq_handler() call cannot be used because it tries to
take irq_desc.lock which is already held when the irq_chip.set_type
hook is called.

Signed-off-by: default avatarKevin Hilman <khilman@mvista.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent cdc6f27d

include/linux/irq.h

+7 −0
Original line number Diff line number Diff line
@@ -339,6 +339,13 @@ extern void 
__set_irq_handler(unsigned int irq, irq_flow_handler_t handle, int is_chained,

		  const char *name);



/* caller has locked the irq_desc and both params are valid */

static inline void __set_irq_handler_unlocked(int irq,

					      irq_flow_handler_t handler)

{

	irq_desc[irq].handle_irq = handler;

}



/*

 * Set a highlevel flow handler for a given IRQ:

 */