1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/input/misc/cobalt_btns.c b/drivers/input/misc/cobalt_btns.c
index d114d3a9e1e..ee73d7219c9 100644
--- a/drivers/input/misc/cobalt_btns.c
+++ b/drivers/input/misc/cobalt_btns.c
@@ -116,7 +116,7 @@ static int __devinit cobalt_buttons_probe(struct platform_device *pdev)
         }
 
         bdev->poll_dev = poll_dev;
-        bdev->reg = ioremap(res->start, res->end - res->start + 1);
+        bdev->reg = ioremap(res->start, resource_size(res));
         dev_set_drvdata(&pdev->dev, bdev);
 
         error = input_register_polled_device(poll_dev);