1 files changed, 2 insertions, 4 deletions

diff --git a/arch/sparc/kernel/pci.c b/arch/sparc/kernel/pci.c
index 80a87e2a3e7c..1e94f946570e 100644
--- a/arch/sparc/kernel/pci.c
+++ b/arch/sparc/kernel/pci.c
@@ -820,11 +820,9 @@ static int __pci_mmap_make_offset_bus(struct pci_dev *pdev, struct vm_area_struc
         unsigned long space_size, user_offset, user_size;
 
         if (mmap_state == pci_mmap_io) {
-                space_size = (pbm->io_space.end -
-                              pbm->io_space.start) + 1;
+                space_size = resource_size(&pbm->io_space);
         } else {
-                space_size = (pbm->mem_space.end -
-                              pbm->mem_space.start) + 1;
+                space_size = resource_size(&pbm->mem_space);
         }
 
         /* Make sure the request is in range. */