diff --git a/drivers/misc/hmc6352.c b/drivers/misc/hmc6352.c
index 423cd40..170bd3d 100644
--- a/drivers/misc/hmc6352.c
+++ b/drivers/misc/hmc6352.c
@@ -46,8 +46,9 @@
 	int ret;
 	unsigned long val;
 
-	if (strict_strtoul(buf, 10, &val))
-		return -EINVAL;
+	ret = kstrtoul(buf, 10, &val);
+	if (ret)
+		return ret;
 	if (val >= strlen(map))
 		return -EINVAL;
 	mutex_lock(&compass_mutex);