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[patch 6/7] genirq: Provide irq_desc_has_action

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  [patch 6/7] genirq: Provide irq_desc_has_action Thomas Gleixner <tglx@linutronix.de> - 2015-08-02 22:40 +0200

#1198421 — [patch 6/7] 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>
---
 include/linux/irqdesc.h |    8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

Index: tip/include/linux/irqdesc.h
===================================================================
--- tip.orig/include/linux/irqdesc.h
+++ tip/include/linux/irqdesc.h
@@ -166,12 +166,16 @@ static inline int handle_domain_irq(stru
 #endif
 
 /* Test to see if a driver has successfully requested an irq */
-static inline int irq_has_action(unsigned int irq)
+static inline int irq_desc_has_action(struct irq_desc *desc)
 {
-	struct irq_desc *desc = irq_to_desc(irq);
 	return desc->action != NULL;
 }
 
+static inline int irq_has_action(unsigned int irq)
+{
+	return irq_desc_has_action(irq_to_desc(irq));
+}
+
 /* caller has locked the irq_desc and both params are valid */
 static inline void __irq_set_handler_locked(unsigned int irq,
 					    irq_flow_handler_t handler)


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