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authorThomas Gleixner <tglx@linutronix.de>2008-10-15 14:31:29 +0200
committerIngo Molnar <mingo@elte.hu>2008-10-16 16:53:14 +0200
commitc6b7674f323622d86316bf7951ad9cae1ce24642 (patch)
tree00ff8c061f9c0822c56e46bc59c46dced278f9a9 /include/linux/irq.h
parent70dd4d992ab324a59cdcd6bedc3f4e729863d514 (diff)
genirq: use inline function for irq_to_desc
For the non sparse irq case an inline function is perfectly fine. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include/linux/irq.h')
-rw-r--r--include/linux/irq.h15
1 files changed, 13 insertions, 2 deletions
diff --git a/include/linux/irq.h b/include/linux/irq.h
index dbe8734ae86..7d1adacaadb 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -204,8 +204,6 @@ struct irq_desc {
const char *name;
} ____cacheline_internodealigned_in_smp;
-extern struct irq_desc *irq_to_desc(unsigned int irq);
-extern struct irq_desc *irq_to_desc_alloc(unsigned int irq);
#ifndef CONFIG_HAVE_SPARSE_IRQ
@@ -216,8 +214,21 @@ extern struct irq_desc irq_desc[NR_IRQS];
extern struct irq_desc *irq_desc;
#endif
+static inline struct irq_desc *irq_to_desc(unsigned int irq)
+{
+ return (irq < nr_irqs) ? irq_desc + irq : NULL;
+}
+
+static inline struct irq_desc *irq_to_desc_alloc(unsigned int irq)
+{
+ return irq_to_desc(irq);
+}
+
#else
+extern struct irq_desc *irq_to_desc(unsigned int irq);
+extern struct irq_desc *irq_to_desc_alloc(unsigned int irq);
+
extern struct irq_desc *sparse_irqs;
#define for_each_irq_desc(irqX, desc) \
for (desc = sparse_irqs, irqX = desc->irq; desc; desc = desc->next, irqX = desc ? desc->irq : -1U)