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genirq: Implement irq_get/put_desc_[bus]locked/unlock()

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Most of the managing functions get the irq descriptor and lock it -
either with or without buslock. Instead of open coding this over and
over provide a common function to do that.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Thomas Gleixner
2011-02-12 12:16:16 +01:00
parent 091738a266
commit d5eb4ad2df
2 changed files with 48 additions and 0 deletions
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28
kernel/irq/internals.h
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@@ -126,6 +126,34 @@ static inline void chip_bus_sync_unlock(struct irq_desc *desc)
desc->irq_data.chip->irq_bus_sync_unlock(&desc->irq_data);
}
struct irq_desc *
__irq_get_desc_lock(unsigned int irq, unsigned long *flags, bool bus);
void __irq_put_desc_unlock(struct irq_desc *desc, unsigned long flags, bool bus);
static inline struct irq_desc *
irq_get_desc_buslock(unsigned int irq, unsigned long *flags)
{
return __irq_get_desc_lock(irq, flags, true);
}
static inline void
irq_put_desc_busunlock(struct irq_desc *desc, unsigned long flags)
{
__irq_put_desc_unlock(desc, flags, true);
}
static inline struct irq_desc *
irq_get_desc_lock(unsigned int irq, unsigned long *flags)
{
return __irq_get_desc_lock(irq, flags, false);
}
static inline void
irq_put_desc_unlock(struct irq_desc *desc, unsigned long flags)
{
__irq_put_desc_unlock(desc, flags, false);
}
/*
* Manipulation functions for irq_data.state
*/