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Commit 57a58a94 authored by David Howells's avatar David Howells Committed by David Howells
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IRQ: Typedef the IRQ flow handler function type 



Typedef the IRQ flow handler function type.

Signed-Off-By: default avatarDavid Howells <dhowells@redhat.com>
(cherry picked from 8e973fbdf5716b93a0a8c0365be33a31ca0fa351 commit)
parent d223a601

include/linux/irq.h

+12 −18
Original line number Diff line number Diff line
@@ -22,6 +22,12 @@ 
#include <asm/irq.h>

#include <asm/ptrace.h>



struct irq_desc;

typedef	void fastcall (*irq_flow_handler_t)(unsigned int irq,

					    struct irq_desc *desc,

					    struct pt_regs *regs);





/*

 * IRQ line status.

 *
@@ -139,9 +145,7 @@ struct irq_chip { 
 * Pad this out to 32 bytes for cache and indexing reasons.

 */

struct irq_desc {

	void fastcall		(*handle_irq)(unsigned int irq,

					      struct irq_desc *desc,

					      struct pt_regs *regs);

	irq_flow_handler_t	handle_irq;

	struct irq_chip		*chip;

	void			*handler_data;

	void			*chip_data;
@@ -281,9 +285,7 @@ handle_bad_irq(unsigned int irq, struct irq_desc *desc, struct pt_regs *regs); 
 * Get a descriptive string for the highlevel handler, for

 * /proc/interrupts output:

 */

extern const char *

handle_irq_name(void fastcall (*handle)(unsigned int, struct irq_desc *,

					struct pt_regs *));

extern const char *handle_irq_name(irq_flow_handler_t handle);



/*

 * Monolithic do_IRQ implementation.
@@ -335,22 +337,15 @@ extern struct irq_chip dummy_irq_chip; 


extern void

set_irq_chip_and_handler(unsigned int irq, struct irq_chip *chip,

			 void fastcall (*handle)(unsigned int,

						 struct irq_desc *,

						 struct pt_regs *));

			 irq_flow_handler_t handle);

extern void

__set_irq_handler(unsigned int irq,

		  void fastcall (*handle)(unsigned int, struct irq_desc *,

					  struct pt_regs *),

		  int is_chained);

__set_irq_handler(unsigned int irq, irq_flow_handler_t handle, int is_chained);



/*

 * Set a highlevel flow handler for a given IRQ:

 */

static inline void

set_irq_handler(unsigned int irq,

		void fastcall (*handle)(unsigned int, struct irq_desc *,

					struct pt_regs *))

set_irq_handler(unsigned int irq, irq_flow_handler_t handle)

{

	__set_irq_handler(irq, handle, 0);

}
@@ -362,8 +357,7 @@ set_irq_handler(unsigned int irq, 
 */

static inline void

set_irq_chained_handler(unsigned int irq,

			void fastcall (*handle)(unsigned int, struct irq_desc *,

						struct pt_regs *))

			irq_flow_handler_t handle)

{

	__set_irq_handler(irq, handle, 1);

}

kernel/irq/chip.c

+3 −9
Original line number Diff line number Diff line
@@ -505,10 +505,7 @@ handle_percpu_irq(unsigned int irq, struct irq_desc *desc, struct pt_regs *regs) 
#endif /* CONFIG_SMP */



void

__set_irq_handler(unsigned int irq,

		  void fastcall (*handle)(unsigned int, irq_desc_t *,

					  struct pt_regs *),

		  int is_chained)

__set_irq_handler(unsigned int irq, irq_flow_handler_t handle, int is_chained)

{

	struct irq_desc *desc;

	unsigned long flags;
@@ -561,9 +558,7 @@ __set_irq_handler(unsigned int irq, 


void

set_irq_chip_and_handler(unsigned int irq, struct irq_chip *chip,

			 void fastcall (*handle)(unsigned int,

						 struct irq_desc *,

						 struct pt_regs *))

			 irq_flow_handler_t handle)

{

	set_irq_chip(irq, chip);

	__set_irq_handler(irq, handle, 0);
@@ -574,8 +569,7 @@ set_irq_chip_and_handler(unsigned int irq, struct irq_chip *chip, 
 * /proc/interrupts output:

 */

const char *

handle_irq_name(void fastcall (*handle)(unsigned int, struct irq_desc *,

					struct pt_regs *))

handle_irq_name(irq_flow_handler_t handle)

{

	if (handle == handle_level_irq)

		return "level  ";