omap: Use resource_size

Use the resource_size function instead of manually calculating the
resource size. This reduces the chance of introducing off-by-one errors
and actually fixes one in mailbox.c.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: Tony Lindgren <tony@atomide.com>

2 files changed, 2 insertions, 2 deletions

diff --git a/arch/arm/mach-omap2/gpmc.c b/arch/arm/mach-omap2/gpmc.c
index 15876828db23..f8657568b1ba 100644
--- a/arch/arm/mach-omap2/gpmc.c
+++ b/arch/arm/mach-omap2/gpmc.c
@@ -366,7 +366,7 @@ int gpmc_cs_request(int cs, unsigned long size, unsigned long *base)
         if (r < 0)
                 goto out;
 
-        gpmc_cs_enable_mem(cs, res->start, res->end - res->start + 1);
+        gpmc_cs_enable_mem(cs, res->start, resource_size(res));
         *base = res->start;
         gpmc_cs_set_reserved(cs, 1);
 out:
diff --git a/arch/arm/mach-omap2/mailbox.c b/arch/arm/mach-omap2/mailbox.c
index c035ad3426d0..ef57b38a56a4 100644
--- a/arch/arm/mach-omap2/mailbox.c
+++ b/arch/arm/mach-omap2/mailbox.c
@@ -300,7 +300,7 @@ static int __devinit omap2_mbox_probe(struct platform_device *pdev)
                 dev_err(&pdev->dev, "invalid mem resource\n");
                 return -ENODEV;
         }
-        mbox_base = ioremap(res->start, res->end - res->start);
+        mbox_base = ioremap(res->start, resource_size(res));
         if (!mbox_base)
                 return -ENOMEM;