linux-kernel - [PATCH] tty: serial: imx: Add return value check for platform_get

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Message-Id: <1589180996-618-1-git-send-email-Anson.Huang@nxp.com>
Date:   Mon, 11 May 2020 15:09:56 +0800
From:   Anson Huang <Anson.Huang@....com>
To:     gregkh@...uxfoundation.org, jslaby@...e.com, shawnguo@...nel.org,
        s.hauer@...gutronix.de, kernel@...gutronix.de, festevam@...il.com,
        linux-serial@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Cc:     Linux-imx@....com
Subject: [PATCH] tty: serial: imx: Add return value check for platform_get_irq()

RX irq is required, so add return value check for platform_get_irq().

Signed-off-by: Anson Huang <Anson.Huang@....com>
---
 drivers/tty/serial/imx.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index f4d6810..f4023d9 100644
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
@@ -2252,6 +2252,8 @@ static int imx_uart_probe(struct platform_device *pdev)
 		return PTR_ERR(base);
 
 	rxirq = platform_get_irq(pdev, 0);
+	if (rxirq < 0)
+		return rxirq;
 	txirq = platform_get_irq_optional(pdev, 1);
 	rtsirq = platform_get_irq_optional(pdev, 2);
 
-- 
2.7.4