ARC: [SMP] Fix IPI IRQ registration

Handle it just like timer. Current request_percpu_irq() would fail on
non-boot cpus and thus IRQ will remian unmasked on those cpus.

[vgupta: fix changelong]
Signed-off-by: Noam Camus <noamc@ezchip.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>

diff --git a/arch/arc/kernel/smp.c b/arch/arc/kernel/smp.c
index cf90b6f4d3e032e62b75b4c170a968145457e973..c802bb5006028e15c1ed1cdc4da5423c09f81236 100644 (file)
--- a/arch/arc/kernel/smp.c
+++ b/arch/arc/kernel/smp.c
@@ -337,8 +337,19 @@ irqreturn_t do_IPI(int irq, void *dev_id)
  * API called by platform code to hookup arch-common ISR to their IPI IRQ
  */
 static DEFINE_PER_CPU(int, ipi_dev);
+
+static struct irqaction arc_ipi_irq = {
+        .name    = "IPI Interrupt",
+        .flags   = IRQF_PERCPU,
+        .handler = do_IPI,
+};
+
 int smp_ipi_irq_setup(int cpu, int irq)
 {
-       int *dev_id = &per_cpu(ipi_dev, smp_processor_id());
-       return request_percpu_irq(irq, do_IPI, "IPI Interrupt", dev_id);
+       if (!cpu)
+               return setup_irq(irq, &arc_ipi_irq);
+       else
+               arch_unmask_irq(irq);
+
+       return 0;
 }