1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/i2c/busses/i2c-au1550.c b/drivers/i2c/busses/i2c-au1550.c
index f78ce523e3db..532828bc50e6 100644
--- a/drivers/i2c/busses/i2c-au1550.c
+++ b/drivers/i2c/busses/i2c-au1550.c
@@ -389,7 +389,7 @@ i2c_au1550_probe(struct platform_device *pdev)
                 goto out;
         }
 
-        priv->ioarea = request_mem_region(r->start, r->end - r->start + 1,
+        priv->ioarea = request_mem_region(r->start, resource_size(r),
                                           pdev->name);
         if (!priv->ioarea) {
                 ret = -EBUSY;