1 files changed, 4 insertions, 4 deletions

diff --git a/arch/sh/kernel/io_trapped.c b/arch/sh/kernel/io_trapped.c
index 32c385ef1011..0f62f4672754 100644
--- a/arch/sh/kernel/io_trapped.c
+++ b/arch/sh/kernel/io_trapped.c
@@ -58,7 +58,7 @@ int register_trapped_io(struct trapped_io *tiop)
 
         for (k = 0; k < tiop->num_resources; k++) {
                 res = tiop->resource + k;
-                len += roundup((res->end - res->start) + 1, PAGE_SIZE);
+                len += roundup(resource_size(res), PAGE_SIZE);
                 flags |= res->flags;
         }
 
@@ -85,7 +85,7 @@ int register_trapped_io(struct trapped_io *tiop)
                        (unsigned long)(tiop->virt_base + len),
                        res->flags & IORESOURCE_IO ? "io" : "mmio",
                        (unsigned long)res->start);
-                len += roundup((res->end - res->start) + 1, PAGE_SIZE);
+                len += roundup(resource_size(res), PAGE_SIZE);
         }
 
         tiop->magic = IO_TRAPPED_MAGIC;
@@ -128,7 +128,7 @@ void __iomem *match_trapped_io_handler(struct list_head *list,
                                 return tiop->virt_base + voffs;
                         }
 
-                        len = (res->end - res->start) + 1;
+                        len = resource_size(res);
                         voffs += roundup(len, PAGE_SIZE);
                 }
         }
@@ -173,7 +173,7 @@ static unsigned long lookup_address(struct trapped_io *tiop,
 
         for (k = 0; k < tiop->num_resources; k++) {
                 res = tiop->resource + k;
-                len = roundup((res->end - res->start) + 1, PAGE_SIZE);
+                len = roundup(resource_size(res), PAGE_SIZE);
                 if (address < (vaddr + len))
                         return res->start + (address - vaddr);
                 vaddr += len;