Compiling handle_percpu_irq only on uniprocessor generates an artificial special case so a typical use like: set_irq_chip_and_handler(irq, &some_irq_type, handle_percpu_irq); needs to be conditionally compiled only on SMP systems as well and an alternative UP construct is usually needed - for no good reason. Signed-off-by: Ralf Baechle <ralf@xxxxxxxxxxxxxx> --- This fixes uniprocessor configurations for some MIPS SMP systems. diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c index f1a73f0..9b5dff6 100644 --- a/kernel/irq/chip.c +++ b/kernel/irq/chip.c @@ -503,7 +503,6 @@ out_unlock: spin_unlock(&desc->lock); } -#ifdef CONFIG_SMP /** * handle_percpu_IRQ - Per CPU local irq handler * @irq: the interrupt number @@ -529,8 +528,6 @@ handle_percpu_irq(unsigned int irq, struct irq_desc *desc) desc->chip->eoi(irq); } -#endif /* CONFIG_SMP */ - void __set_irq_handler(unsigned int irq, irq_flow_handler_t handle, int is_chained, const char *name)