1 files changed, 4 insertions, 4 deletions

diff --git a/drivers/i2c/busses/i2c-pmcmsp.c b/drivers/i2c/busses/i2c-pmcmsp.c
index 0bdb2d7f0570..7b57d5f267e1 100644
--- a/drivers/i2c/busses/i2c-pmcmsp.c
+++ b/drivers/i2c/busses/i2c-pmcmsp.c
@@ -283,7 +283,7 @@ static int __devinit pmcmsptwi_probe(struct platform_device *pldev)
         }
 
         /* reserve the memory region */
-        if (!request_mem_region(res->start, res->end - res->start + 1,
+        if (!request_mem_region(res->start, resource_size(res),
                                 pldev->name)) {
                 dev_err(&pldev->dev,
                         "Unable to get memory/io address region 0x%08x\n",
@@ -294,7 +294,7 @@ static int __devinit pmcmsptwi_probe(struct platform_device *pldev)
 
         /* remap the memory */
         pmcmsptwi_data.iobase = ioremap_nocache(res->start,
-                                                res->end - res->start + 1);
+                                                resource_size(res));
         if (!pmcmsptwi_data.iobase) {
                 dev_err(&pldev->dev,
                         "Unable to ioremap address 0x%08x\n", res->start);
@@ -360,7 +360,7 @@ ret_unmap:
         iounmap(pmcmsptwi_data.iobase);
 
 ret_unreserve:
-        release_mem_region(res->start, res->end - res->start + 1);
+        release_mem_region(res->start, resource_size(res));
 
 ret_err:
         return rc;
@@ -385,7 +385,7 @@ static int __devexit pmcmsptwi_remove(struct platform_device *pldev)
         iounmap(pmcmsptwi_data.iobase);
 
         res = platform_get_resource(pldev, IORESOURCE_MEM, 0);
-        release_mem_region(res->start, res->end - res->start + 1);
+        release_mem_region(res->start, resource_size(res));
 
         return 0;
 }