#endif
}
-/*
- * do_IRQ handles all normal device IRQ's (the special
- * SMP cross-CPU interrupts have their own specific
- * handlers).
- */
-asmlinkage unsigned int __irq_entry do_IRQ(struct pt_regs *regs)
+bool handle_irq(unsigned irq, struct pt_regs *regs)
{
- struct pt_regs *old_regs = set_irq_regs(regs);
struct irq_desc *desc;
- /* high bit used in ret_from_ code */
- unsigned vector = ~regs->orig_ax;
- unsigned irq;
-
- exit_idle();
- irq_enter();
- irq = __get_cpu_var(vector_irq)[vector];
-
stack_overflow_check(regs);
desc = irq_to_desc(irq);
- if (likely(desc))
- generic_handle_irq_desc(irq, desc);
- else {
- if (!disable_apic)
- ack_APIC_irq();
-
- if (printk_ratelimit())
- printk(KERN_EMERG "%s: %d.%d No irq handler for vector\n",
- __func__, smp_processor_id(), vector);
- }
-
- irq_exit();
+ if (unlikely(!desc))
+ return false;
- set_irq_regs(old_regs);
- return 1;
+ generic_handle_irq_desc(irq, desc);
+ return true;
}
#ifdef CONFIG_HOTPLUG_CPU