From bb8478d7d676802211a9a5d77bd0f87899900e41 Mon Sep 17 00:00:00 2001
From: Axel Lin <axel.lin@ingics.com>
Date: Mon, 23 Feb 2015 11:34:30 +0800
Subject: [PATCH] serial: ar933x_uart: Fix off-by-one for checking valid alias
 id

Current code uses the alias id as array subscript of ar933x_console_ports.
So the valid id is 0 ... CONFIG_SERIAL_AR933X_NR_UARTS - 1.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/tty/serial/ar933x_uart.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/tty/serial/ar933x_uart.c b/drivers/tty/serial/ar933x_uart.c
index 77fc9faa74a4..1519d2ca7705 100644
--- a/drivers/tty/serial/ar933x_uart.c
+++ b/drivers/tty/serial/ar933x_uart.c
@@ -649,7 +649,7 @@ static int ar933x_uart_probe(struct platform_device *pdev)
 			id = 0;
 	}
 
-	if (id > CONFIG_SERIAL_AR933X_NR_UARTS)
+	if (id >= CONFIG_SERIAL_AR933X_NR_UARTS)
 		return -EINVAL;
 
 	irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
-- 
2.34.1