1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/i2c/busses/i2c-mv64xxx.c b/drivers/i2c/busses/i2c-mv64xxx.c
index 5a4945d1dba4..c3869d94ad42 100644
--- a/drivers/i2c/busses/i2c-mv64xxx.c
+++ b/drivers/i2c/busses/i2c-mv64xxx.c
@@ -469,7 +469,7 @@ mv64xxx_i2c_map_regs(struct platform_device *pd,
         if (!r)
                 return -ENODEV;
 
-        size = r->end - r->start + 1;
+        size = resource_size(r);
 
         if (!request_mem_region(r->start, size, drv_data->adapter.name))
                 return -EBUSY;