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>
diff --git a/include/linux/irqdesc.h b/include/linux/irqdesc.h
index fcea4e4..5acfa26 100644
--- a/include/linux/irqdesc.h
+++ b/include/linux/irqdesc.h
@@ -166,10 +166,14 @@
#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 */