2 files changed, 5 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;
         }
diff --git a/include/asm-powerpc/irq.h b/include/asm-powerpc/irq.h
index 46476e9a494a..4734cc178db5 100644
--- a/include/asm-powerpc/irq.h
+++ b/include/asm-powerpc/irq.h
@@ -89,6 +89,9 @@ struct irq_host_ops {
         /* Dispose of such a mapping */
         void (*unmap)(struct irq_host *h, unsigned int virq);
 
+        /* Update of such a mapping  */
+        void (*remap)(struct irq_host *h, unsigned int virq, irq_hw_number_t hw);
+
         /* Translate device-tree interrupt specifier from raw format coming
          * from the firmware to a irq_hw_number_t (interrupt line number) and
          * type (sense) that can be passed to set_irq_type(). In the absence