1 files changed, 4 insertions, 4 deletions

diff --git a/drivers/spi/spi-tegra.c b/drivers/spi/spi-tegra.c
index 6c3aa6ecaade..8e30727b5221 100644
--- a/drivers/spi/spi-tegra.c
+++ b/drivers/spi/spi-tegra.c
@@ -498,14 +498,14 @@ static int __init spi_tegra_probe(struct platform_device *pdev)
                 goto err0;
         }
 
-        if (!request_mem_region(r->start, (r->end - r->start) + 1,
+        if (!request_mem_region(r->start, resource_size(r),
                                 dev_name(&pdev->dev))) {
                 ret = -EBUSY;
                 goto err0;
         }
 
         tspi->phys = r->start;
-        tspi->base = ioremap(r->start, r->end - r->start + 1);
+        tspi->base = ioremap(r->start, resource_size(r));
         if (!tspi->base) {
                 dev_err(&pdev->dev, "can't ioremap iomem\n");
                 ret = -ENOMEM;
@@ -563,7 +563,7 @@ err3:
 err2:
         iounmap(tspi->base);
 err1:
-        release_mem_region(r->start, (r->end - r->start) + 1);
+        release_mem_region(r->start, resource_size(r));
 err0:
         spi_master_put(master);
         return ret;
@@ -588,7 +588,7 @@ static int __devexit spi_tegra_remove(struct platform_device *pdev)
         iounmap(tspi->base);
 
         r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-        release_mem_region(r->start, (r->end - r->start) + 1);
+        release_mem_region(r->start, resource_size(r));
 
         return 0;
 }