1 files changed, 1 insertions, 1 deletions

diff --git a/arch/powerpc/sysdev/fsl_rio.c b/arch/powerpc/sysdev/fsl_rio.c
index b3fd081d56f5..2de8551df40f 100644
--- a/arch/powerpc/sysdev/fsl_rio.c
+++ b/arch/powerpc/sysdev/fsl_rio.c
@@ -1524,7 +1524,7 @@ int fsl_rio_setup(struct platform_device *dev)
         port->priv = priv;
         port->phys_efptr = 0x100;
 
-        priv->regs_win = ioremap(regs.start, regs.end - regs.start + 1);
+        priv->regs_win = ioremap(regs.start, resource_size(&regs));
         rio_regs_win = priv->regs_win;
 
         /* Probe the master port phy type */