1 files changed, 2 insertions, 3 deletions

diff --git a/drivers/rtc/rtc-puv3.c b/drivers/rtc/rtc-puv3.c
index 46f14b82f3ab..b3eba3cddd42 100644
--- a/drivers/rtc/rtc-puv3.c
+++ b/drivers/rtc/rtc-puv3.c
@@ -267,9 +267,8 @@ static int puv3_rtc_probe(struct platform_device *pdev)
                 return -ENOENT;
         }
 
-        puv3_rtc_mem = request_mem_region(res->start,
-                                         res->end-res->start+1,
-                                         pdev->name);
+        puv3_rtc_mem = request_mem_region(res->start, resource_size(res),
+                                          pdev->name);
 
         if (puv3_rtc_mem == NULL) {
                 dev_err(&pdev->dev, "failed to reserve memory region\n");