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| author | Thomas Gleixner <tglx@linutronix.de> | 2008-10-15 14:31:29 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-10-16 16:53:14 +0200 |
| commit | c6b7674f323622d86316bf7951ad9cae1ce24642 (patch) | |
| tree | 00ff8c061f9c0822c56e46bc59c46dced278f9a9 /include/linux/irq.h | |
| parent | 70dd4d992ab324a59cdcd6bedc3f4e729863d514 (diff) | |
| download | linux-3.10-c6b7674f323622d86316bf7951ad9cae1ce24642.tar.gz linux-3.10-c6b7674f323622d86316bf7951ad9cae1ce24642.tar.bz2 linux-3.10-c6b7674f323622d86316bf7951ad9cae1ce24642.zip | |
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.h | 15 |
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) |