linux-kernel - [PATCH 2/3] IRQ: Typedef the IRQ handler function type

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Message-Id: <20061002162051.17763.72448.stgit@warthog.cambridge.redhat.com>
Date:	Mon, 02 Oct 2006 17:20:51 +0100
From:	David Howells <dhowells@...hat.com>
To:	torvalds@...l.org, akpm@...l.org
Cc:	dhowells@...hat.com, linux-kernel@...r.kernel.org,
	linux-arch@...r.kernel.org
Subject: [PATCH 2/3] IRQ: Typedef the IRQ handler function type

From: David Howells <dhowells@...hat.com>

Typedef the IRQ handler function type.

Signed-Off-By: David Howells <dhowells@...hat.com>
---

 include/linux/interrupt.h |    7 ++++---
 kernel/irq/manage.c       |    4 +---
 2 files changed, 5 insertions(+), 6 deletions(-)

diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h
index 1f97e3d..1978235 100644
--- a/include/linux/interrupt.h
+++ b/include/linux/interrupt.h
@@ -64,8 +64,10 @@ #define SA_TRIGGER_FALLING	IRQF_TRIGGER_
 #define SA_TRIGGER_RISING	IRQF_TRIGGER_RISING
 #define SA_TRIGGER_MASK		IRQF_TRIGGER_MASK
 
+typedef irqreturn_t (*irq_handler_t)(int, void *, struct pt_regs *);
+
 struct irqaction {
-	irqreturn_t (*handler)(int, void *, struct pt_regs *);
+	irq_handler_t handler;
 	unsigned long flags;
 	cpumask_t mask;
 	const char *name;
@@ -76,8 +78,7 @@ struct irqaction {
 };
 
 extern irqreturn_t no_action(int cpl, void *dev_id, struct pt_regs *regs);
-extern int request_irq(unsigned int,
-		       irqreturn_t (*handler)(int, void *, struct pt_regs *),
+extern int request_irq(unsigned int, irq_handler_t handler,
 		       unsigned long, const char *, void *);
 extern void free_irq(unsigned int, void *);
 
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 92be519..6879202 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -427,8 +427,7 @@ EXPORT_SYMBOL(free_irq);
  *	IRQF_SAMPLE_RANDOM	The interrupt can be used for entropy
  *
  */
-int request_irq(unsigned int irq,
-		irqreturn_t (*handler)(int, void *, struct pt_regs *),
+int request_irq(unsigned int irq, irq_handler_t handler,
 		unsigned long irqflags, const char *devname, void *dev_id)
 {
 	struct irqaction *action;
@@ -475,4 +474,3 @@ #endif
 	return retval;
 }
 EXPORT_SYMBOL(request_irq);
-
-
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