devres.c File Reference

#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/device.h>
#include <linux/gfp.h>

Go to the source code of this file.

Data Structures
struct	irq_devres

Functions
int	devm_request_threaded_irq (struct device *dev, unsigned int irq, irq_handler_t handler, irq_handler_t thread_fn, unsigned long irqflags, const char *devname, void *dev_id)
	EXPORT_SYMBOL (devm_request_threaded_irq)
void	devm_free_irq (struct device *dev, unsigned int irq, void *dev_id)
	EXPORT_SYMBOL (devm_free_irq)

Function Documentation

void devm_free_irq	(	struct device *	dev,
		unsigned int	irq,
		void *	dev_id
	)

devm_free_irq - free an interrupt : device to free interrupt for : Interrupt line to free : Device identity to free

Except for the extra argument, this function takes the same arguments and performs the same function as free_irq(). This function instead of free_irq() should be used to manually free IRQs allocated with devm_request_irq().

Definition at line 86 of file devres.c.

int devm_request_threaded_irq	(	struct device *	dev,
		unsigned int	irq,
		irq_handler_t	handler,
		irq_handler_t	thread_fn,
		unsigned long	irqflags,
		const char *	devname,
		void *	dev_id
	)

devm_request_threaded_irq - allocate an interrupt line for a managed device : device to request interrupt for : Interrupt line to allocate : Function to be called when the IRQ occurs : function to be called in a threaded interrupt context. NULL for devices which handle everything in : Interrupt type flags : An ascii name for the claiming device : A cookie passed back to the handler function

Except for the extra argument, this function takes the same arguments and performs the same function as request_irq(). IRQs requested with this function will be automatically freed on driver detach.

If an IRQ allocated with this function needs to be freed separately, devm_free_irq() must be used.

Definition at line 47 of file devres.c.

EXPORT_SYMBOL

(

devm_request_threaded_irq

)

EXPORT_SYMBOL

(

devm_free_irq

)