1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/input/serio/at32psif.c b/drivers/input/serio/at32psif.c
index 41fda8c67b1..a6fb7a3dcc4 100644
--- a/drivers/input/serio/at32psif.c
+++ b/drivers/input/serio/at32psif.c
@@ -231,7 +231,7 @@ static int __init psif_probe(struct platform_device *pdev)
                 goto out_free_io;
         }
 
-        psif->regs = ioremap(regs->start, regs->end - regs->start + 1);
+        psif->regs = ioremap(regs->start, resource_size(regs));
         if (!psif->regs) {
                 ret = -ENOMEM;
                 dev_dbg(&pdev->dev, "could not map I/O memory\n");