[POWERPC] Add IRQ remapping hook

This patch adds irq remapping hook. On interrupt mechanism on Beat,
when an irq outlet which has an id which is formerly used is created,
remapping the irq is required.

Signed-off-by: Kou Ishizaki <kou.ishizaki@toshiba.co.jp>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c
index 0bd8c7665834..34dc37e0e369 100644
--- a/arch/powerpc/kernel/irq.c
+++ b/arch/powerpc/kernel/irq.c
@@ -604,6 +604,8 @@ unsigned int irq_create_mapping(struct irq_host *host,
          */
         virq = irq_find_mapping(host, hwirq);
         if (virq != IRQ_NONE) {
+                if (host->ops->remap)
+                        host->ops->remap(host, virq, hwirq);
                 pr_debug("irq: -> existing mapping on virq %d\n", virq);
                 return virq;
         }