1 files changed, 1 insertions, 2 deletions

diff --git a/drivers/tty/serial/bfin_5xx.c b/drivers/tty/serial/bfin_5xx.c
index 9b1ff2b6bb37..957135a19743 100644
--- a/drivers/tty/serial/bfin_5xx.c
+++ b/drivers/tty/serial/bfin_5xx.c
@@ -1304,8 +1304,7 @@ static int bfin_serial_probe(struct platform_device *pdev)
                         goto out_error_free_peripherals;
                 }
 
-                uart->port.membase = ioremap(res->start,
-                        res->end - res->start);
+                uart->port.membase = ioremap(res->start, resource_size(res));
                 if (!uart->port.membase) {
                         dev_err(&pdev->dev, "Cannot map uart IO\n");
                         ret = -ENXIO;