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path: root/drivers/tty/serial/sunsu.c
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Diffstat (limited to 'drivers/tty/serial/sunsu.c')
-rw-r--r--drivers/tty/serial/sunsu.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/tty/serial/sunsu.c b/drivers/tty/serial/sunsu.c
index 92aa54550e84..ad0f8f5f6ea1 100644
--- a/drivers/tty/serial/sunsu.c
+++ b/drivers/tty/serial/sunsu.c
@@ -1435,7 +1435,7 @@ static int __devinit su_probe(struct platform_device *op)
rp = &op->resource[0];
up->port.mapbase = rp->start;
- up->reg_size = (rp->end - rp->start) + 1;
+ up->reg_size = resource_size(rp);
up->port.membase = of_ioremap(rp, 0, up->reg_size, "su");
if (!up->port.membase) {
if (type != SU_PORT_PORT)