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genirq: Provide irq_desc_has_action 

If we have a reference to irq_desc already, there is no point to do
another lookup.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Link: http://lkml.kernel.org/r/20150802203609.638130301@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Thomas Gleixner 2015-08-02 20:38:26 +00:00
parent 44825757a3
commit f61ae4fb66
1 changed files with 6 additions and 2 deletions
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8
include/linux/irqdesc.h
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@ -166,10 +166,14 @@ static inline int handle_domain_irq(struct irq_domain *domain,
#endif
/* Test to see if a driver has successfully requested an irq */
static inline int irq_desc_has_action(struct irq_desc *desc)
{
return desc->action != NULL;
}
static inline int irq_has_action(unsigned int irq)
{
struct irq_desc *desc = irq_to_desc(irq);
return desc->action != NULL;
return irq_desc_has_action(irq_to_desc(irq));
}
/* caller has locked the irq_desc and both params are valid */