1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/ide/tx4939ide.c b/drivers/ide/tx4939ide.c
index bed3e39aac96..71c231954972 100644
--- a/drivers/ide/tx4939ide.c
+++ b/drivers/ide/tx4939ide.c
@@ -551,10 +551,10 @@ static int __init tx4939ide_probe(struct platform_device *pdev)
                 return -ENODEV;
 
         if (!devm_request_mem_region(&pdev->dev, res->start,
-                                     res->end - res->start + 1, "tx4938ide"))
+                                     resource_size(res), "tx4938ide"))
                 return -EBUSY;
         mapbase = (unsigned long)devm_ioremap(&pdev->dev, res->start,
-                                              res->end - res->start + 1);
+                                              resource_size(res));
         if (!mapbase)
                 return -EBUSY;
         memset(&hw, 0, sizeof(hw));