diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c
index d0a56235c50ee..522f69d3c8ae2 100644
--- a/drivers/tty/serial/sh-sci.c
+++ b/drivers/tty/serial/sh-sci.c
@@ -1889,7 +1889,7 @@ static int __devinit sci_init_single(struct platform_device *dev,
 
 	if (p->regtype == SCIx_PROBE_REGTYPE) {
 		ret = sci_probe_regmap(p);
-		if (unlikely(!ret))
+		if (unlikely(ret != 0))
 			return ret;
 	}