MIPS: Netlogic: SMP fixes for XLR/XLS platform code.

Fix few issues in the Netlogic code:
- Use handle_percpu_irq to handle per-cpu interrupts
- Remove unused function nlm_common_ipi_handler()
- Call scheduler_ipi() on SMP_RESCHEDULE_YOURSELF
- Enable interrupts in nlm_smp_finish()

Signed-off-by: Jayachandran C <jayachandranc@netlogicmicro.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2460/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/netlogic/xlr/irq.c

@@ -209,7 +209,7 @@ void __init init_xlr_irqs(void)
 			irq_set_chip_and_handler(i, &xlr_pic, handle_level_irq);
 		else
 			irq_set_chip_and_handler(i, &nlm_cpu_intr,
-						handle_level_irq);
+						handle_percpu_irq);
 	}
 #ifdef CONFIG_SMP
 	irq_set_chip_and_handler(IRQ_IPI_SMP_FUNCTION, &nlm_cpu_intr,

arch/mips/netlogic/xlr/smp.c

@@ -87,17 +87,7 @@ void nlm_smp_function_ipi_handler(unsigned int irq, struct irq_desc *desc)
 /* IRQ_IPI_SMP_RESCHEDULE  handler */
 void nlm_smp_resched_ipi_handler(unsigned int irq, struct irq_desc *desc)
 {
-	set_need_resched();
-}
-
-void nlm_common_ipi_handler(int irq, struct pt_regs *regs)
-{
-	if (irq == IRQ_IPI_SMP_FUNCTION) {
-		smp_call_function_interrupt();
-	} else {
-		/* Announce that we are for reschduling */
-		set_need_resched();
-	}
+	scheduler_ipi();
 }
 
 /*
@@ -122,6 +112,7 @@ void nlm_smp_finish(void)
 #ifdef notyet
 	nlm_common_msgring_cpu_init();
 #endif
+	local_irq_enable();
 }
 
 void nlm_cpus_done(void)