1 files changed, 3 insertions, 3 deletions

diff --git a/drivers/rtc/rtc-cmos.c b/drivers/rtc/rtc-cmos.c
index 911e75cdc125..05beb6c1ca79 100644
--- a/drivers/rtc/rtc-cmos.c
+++ b/drivers/rtc/rtc-cmos.c
@@ -606,7 +606,7 @@ cmos_do_probe(struct device *dev, struct resource *ports, int rtc_irq)
          * (needing ioremap etc), not i/o space resources like this ...
          */
         ports = request_region(ports->start,
-                        ports->end + 1 - ports->start,
+                        resource_size(ports),
                         driver_name);
         if (!ports) {
                 dev_dbg(dev, "i/o registers already in use\n");
@@ -750,7 +750,7 @@ cleanup1:
         cmos_rtc.dev = NULL;
         rtc_device_unregister(cmos_rtc.rtc);
 cleanup0:
-        release_region(ports->start, ports->end + 1 - ports->start);
+        release_region(ports->start, resource_size(ports));
         return retval;
 }
 
@@ -779,7 +779,7 @@ static void __exit cmos_do_remove(struct device *dev)
         cmos->rtc = NULL;
 
         ports = cmos->iomem;
-        release_region(ports->start, ports->end + 1 - ports->start);
+        release_region(ports->start, resource_size(ports));
         cmos->iomem = NULL;
 
         cmos->dev = NULL;