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Commit a2e8461a authored by Thomas Gleixner's avatar Thomas Gleixner
Browse files

genirq: Provide locked setter for chip, handler, name 



Some irq_set_type() callbacks need to change the chip and the handler
when the trigger mode changes. We have already a (misnomed) setter
function for the handler which can be called from irq_set_type().

Provide one which allows to set chip and name as well. Put the
misnomed function under the COMPAT switch and provide a replacement.

Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent d3e17deb

include/linux/irqdesc.h

+24 −5
Original line number Diff line number Diff line
@@ -171,25 +171,44 @@ static inline int irq_has_action(unsigned int irq) 
	return desc->action != NULL;

}



#ifndef CONFIG_GENERIC_HARDIRQS_NO_COMPAT

static inline int irq_balancing_disabled(unsigned int irq)

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

static inline void __irq_set_handler_locked(unsigned int irq,

					    irq_flow_handler_t handler)

{

	struct irq_desc *desc;



	desc = irq_to_desc(irq);

	return desc->status & IRQ_NO_BALANCING_MASK;

	desc->handle_irq = handler;

}

#endif



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

static inline void

__irq_set_chip_handler_name_locked(unsigned int irq, struct irq_chip *chip,

				   irq_flow_handler_t handler, const char *name)

{

	struct irq_desc *desc;



	desc = irq_to_desc(irq);

	irq_desc_get_irq_data(desc)->chip = chip;

	desc->handle_irq = handler;

	desc->name = name;

}



#ifndef CONFIG_GENERIC_HARDIRQS_NO_COMPAT

static inline void __set_irq_handler_unlocked(int irq,

					      irq_flow_handler_t handler)

{

	__irq_set_handler_locked(irq, handler);

}



static inline int irq_balancing_disabled(unsigned int irq)

{

	struct irq_desc *desc;



	desc = irq_to_desc(irq);

	desc->handle_irq = handler;

	return desc->status & IRQ_NO_BALANCING_MASK;

}

#endif



static inline void

irq_set_lockdep_class(unsigned int irq, struct lock_class_key *class)