1 files changed, 14 insertions, 0 deletions

diff --git a/arch/powerpc/kernel/prom_parse.c b/arch/powerpc/kernel/prom_parse.c
index aa40a5307294..78ee8d5b07ce 100644
--- a/arch/powerpc/kernel/prom_parse.c
+++ b/arch/powerpc/kernel/prom_parse.c
@@ -1042,3 +1042,17 @@ const void *of_get_mac_address(struct device_node *np)
 }
 EXPORT_SYMBOL(of_get_mac_address);
 
+int of_irq_to_resource(struct device_node *dev, int index, struct resource *r)
+{
+        int irq = irq_of_parse_and_map(dev, index);
+
+        /* Only dereference the resource if both the
+         * resource and the irq are valid. */
+        if (r && irq != NO_IRQ) {
+                r->start = r->end = irq;
+                r->flags = IORESOURCE_IRQ;
+        }
+
+        return irq;
+}
+EXPORT_SYMBOL_GPL(of_irq_to_resource);