1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/char/xilinx_hwicap/xilinx_hwicap.c b/drivers/char/xilinx_hwicap/xilinx_hwicap.c
index 39ccdeada791..e90e1c74fd4c 100644
--- a/drivers/char/xilinx_hwicap/xilinx_hwicap.c
+++ b/drivers/char/xilinx_hwicap/xilinx_hwicap.c
@@ -621,7 +621,7 @@ static int __devinit hwicap_setup(struct device *dev, int id,
 
         drvdata->mem_start = regs_res->start;
         drvdata->mem_end = regs_res->end;
-        drvdata->mem_size = regs_res->end - regs_res->start + 1;
+        drvdata->mem_size = resource_size(regs_res);
 
         if (!request_mem_region(drvdata->mem_start,
                                         drvdata->mem_size, DRIVER_NAME)) {