From 6dc7545135c010b3f14061148ffab0874825f471 Mon Sep 17 00:00:00 2001
From: Andrey Smirnov <andrew.smirnov@gmail.com>
Date: Wed, 8 Mar 2017 14:08:59 -0800
Subject: [PATCH] serial: atmel: Check result of clk_get()

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 drivers/serial/atmel.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/serial/atmel.c b/drivers/serial/atmel.c
index 4e4624e23..ab94fd217 100644
--- a/drivers/serial/atmel.c
+++ b/drivers/serial/atmel.c
@@ -403,6 +403,11 @@ static int atmel_serial_init_port(struct console_device *cdev)
 		return -ENOENT;
 
 	uart->clk = clk_get(dev, "usart");
+	if (IS_ERR(uart->clk)) {
+		dev_err(dev, "Failed to get 'usart' clock\n");
+		return PTR_ERR(uart->clk);
+	}
+
 	clk_enable(uart->clk);
 	uart->uartclk = clk_get_rate(uart->clk);