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>
diff --git a/arch/arm/mach-omap2/mailbox.c b/arch/arm/mach-omap2/mailbox.c
index c035ad3..ef57b38a 100644
--- a/arch/arm/mach-omap2/mailbox.c
+++ b/arch/arm/mach-omap2/mailbox.c
@@ -300,7 +300,7 @@
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;