linux-kernel - [PATCH] serial: max310x: Add error checking in probe()

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Message-ID: <aJTMPZiKqeXSE-KM@stanley.mountain>
Date: Thu, 7 Aug 2025 18:54:37 +0300
From: Dan Carpenter <dan.carpenter@...aro.org>
To: Cosmin Tanislav <cosmin.tanislav@...log.com>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Jiri Slaby <jirislaby@...nel.org>,
	Bartosz Golaszewski <bartosz.golaszewski@...aro.org>,
	Andy Shevchenko <andy.shevchenko@...il.com>,
	linux-kernel@...r.kernel.org, linux-serial@...r.kernel.org,
	kernel-janitors@...r.kernel.org
Subject: [PATCH] serial: max310x: Add error checking in probe()

Check if devm_i2c_new_dummy_device() fails.

Fixes: 2e1f2d9a9bdb ("serial: max310x: implement I2C support")
Signed-off-by: Dan Carpenter <dan.carpenter@...aro.org>
---
 drivers/tty/serial/max310x.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/tty/serial/max310x.c b/drivers/tty/serial/max310x.c
index 541c790c0109..2b42a4c21a9b 100644
--- a/drivers/tty/serial/max310x.c
+++ b/drivers/tty/serial/max310x.c
@@ -1644,6 +1644,8 @@ static int max310x_i2c_probe(struct i2c_client *client)
 		port_client = devm_i2c_new_dummy_device(&client->dev,
 							client->adapter,
 							port_addr);
+		if (IS_ERR(port_client))
+			return PTR_ERR(port_client);
 
 		regcfg_i2c.name = max310x_regmap_name(i);
 		regmaps[i] = devm_regmap_init_i2c(port_client, &regcfg_i2c);
-- 
2.47.2