1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/watchdog/pnx4008_wdt.c b/drivers/watchdog/pnx4008_wdt.c
index 4d227b152001..430a5848a9a5 100644
--- a/drivers/watchdog/pnx4008_wdt.c
+++ b/drivers/watchdog/pnx4008_wdt.c
@@ -264,7 +264,7 @@ static int __devinit pnx4008_wdt_probe(struct platform_device *pdev)
                 return -ENOENT;
         }
 
-        size = res->end - res->start + 1;
+        size = resource_size(res);
         wdt_mem = request_mem_region(res->start, size, pdev->name);
 
         if (wdt_mem == NULL) {