1 files changed, 3 insertions, 3 deletions

diff --git a/drivers/tty/serial/omap-serial.c b/drivers/tty/serial/omap-serial.c
index 47cadf474149..c37df8d0fa28 100644
--- a/drivers/tty/serial/omap-serial.c
+++ b/drivers/tty/serial/omap-serial.c
@@ -1241,8 +1241,8 @@ static int serial_omap_probe(struct platform_device *pdev)
                 return -ENODEV;
         }
 
-        if (!request_mem_region(mem->start, (mem->end - mem->start) + 1,
-                                     pdev->dev.driver->name)) {
+        if (!request_mem_region(mem->start, resource_size(mem),
+                                pdev->dev.driver->name)) {
                 dev_err(&pdev->dev, "memory region already claimed\n");
                 return -EBUSY;
         }
@@ -1308,7 +1308,7 @@ err:
         dev_err(&pdev->dev, "[UART%d]: failure [%s]: %d\n",
                                 pdev->id, __func__, ret);
 do_release_region:
-        release_mem_region(mem->start, (mem->end - mem->start) + 1);
+        release_mem_region(mem->start, resource_size(mem));
         return ret;
 }