1 files changed, 1 insertions, 1 deletions

diff --git a/include/linux/rio.h b/include/linux/rio.h
index aa2323893e8d..f7ec35b48800 100644
--- a/include/linux/rio.h
+++ b/include/linux/rio.h
@@ -425,7 +425,7 @@ struct rio_ops {
         int (*add_inb_buffer)(struct rio_mport *mport, int mbox, void *buf);
         void *(*get_inb_message)(struct rio_mport *mport, int mbox);
         int (*map_inb)(struct rio_mport *mport, dma_addr_t lstart,
-                        u64 rstart, u32 size, u32 flags);
+                        u64 rstart, u64 size, u32 flags);
         void (*unmap_inb)(struct rio_mport *mport, dma_addr_t lstart);
         int (*query_mport)(struct rio_mport *mport,
                            struct rio_mport_attr *attr);