diff --git a/zhiyuan/kernel/driver/drivers/power/power_key/axp2101-pek.c b/zhiyuan/kernel/driver/drivers/power/power_key/axp2101-pek.c
index ef8a24347b40858175409fb08ce8648fe8cbeaba..49727a6730ed7a94f018f8e75c3e9052957994a3 100755
--- a/zhiyuan/kernel/driver/drivers/power/power_key/axp2101-pek.c
+++ b/zhiyuan/kernel/driver/drivers/power/power_key/axp2101-pek.c
@@ -168,8 +168,9 @@ static ssize_t axp20x_store_ext_attr(struct device *dev,
 	strncpy(val_str, buf, sizeof(val_str) - 1);
 	len = strlen(val_str);
 
-	if (len && val_str[len - 1] == '\n')
+	if (len && val_str[len - 1] == '\n') {
 		val_str[len - 1] = '\0';
+	}
 
 	ret = kstrtouint(val_str, 10, &val);
 	if (ret)