1 files changed, 5 insertions, 4 deletions

diff --git a/drivers/usb/c67x00/c67x00-drv.c b/drivers/usb/c67x00/c67x00-drv.c
index 5633bc5c8bf2..b6d49234e521 100644
--- a/drivers/usb/c67x00/c67x00-drv.c
+++ b/drivers/usb/c67x00/c67x00-drv.c
@@ -37,6 +37,7 @@
 #include <linux/device.h>
 #include <linux/io.h>
 #include <linux/list.h>
+#include <linux/slab.h>
 #include <linux/usb.h>
 #include <linux/usb/c67x00.h>
 
@@ -137,13 +138,13 @@ static int __devinit c67x00_drv_probe(struct platform_device *pdev)
         if (!c67x00)
                 return -ENOMEM;
 
-        if (!request_mem_region(res->start, res->end - res->start + 1,
+        if (!request_mem_region(res->start, resource_size(res),
                                 pdev->name)) {
                 dev_err(&pdev->dev, "Memory region busy\n");
                 ret = -EBUSY;
                 goto request_mem_failed;
         }
-        c67x00->hpi.base = ioremap(res->start, res->end - res->start + 1);
+        c67x00->hpi.base = ioremap(res->start, resource_size(res));
         if (!c67x00->hpi.base) {
                 dev_err(&pdev->dev, "Unable to map HPI registers\n");
                 ret = -EIO;
@@ -182,7 +183,7 @@ static int __devinit c67x00_drv_probe(struct platform_device *pdev)
  request_irq_failed:
         iounmap(c67x00->hpi.base);
  map_failed:
-        release_mem_region(res->start, res->end - res->start + 1);
+        release_mem_region(res->start, resource_size(res));
  request_mem_failed:
         kfree(c67x00);
 
@@ -208,7 +209,7 @@ static int __devexit c67x00_drv_remove(struct platform_device *pdev)
 
         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
         if (res)
-                release_mem_region(res->start, res->end - res->start + 1);
+                release_mem_region(res->start, resource_size(res));
 
         kfree(c67x00);