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    Subject[PATCH 2/3] IRQ: Typedef the IRQ handler function type
    Date
    From: David Howells <dhowells@redhat.com>

    Typedef the IRQ handler function type.

    Signed-Off-By: David Howells <dhowells@redhat.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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