linux-kernel - [PATCH] usb: typec: retimer: Check dev_set

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Message-ID: <tencent_A06A37B6A0C0643DEC1524501525866FAC09@qq.com>
Date:   Sat, 14 Oct 2023 17:24:53 +0800
From:   Zhang Shurong <zhang_shurong@...mail.com>
To:     heikki.krogerus@...ux.intel.com
Cc:     gregkh@...uxfoundation.org, linux-usb@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Zhang Shurong <zhang_shurong@...mail.com>
Subject: [PATCH] usb: typec: retimer: Check dev_set_name() return value

It's possible that dev_set_name() returns -ENOMEM.
We fix this by catching the error and handling it.

Fixes: ddaf8d96f93b ("usb: typec: Add support for retimers")
Signed-off-by: Zhang Shurong <zhang_shurong@...mail.com>
---
 drivers/usb/typec/retimer.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/typec/retimer.c b/drivers/usb/typec/retimer.c
index 4a7d1b5c4d86..f163856a78cd 100644
--- a/drivers/usb/typec/retimer.c
+++ b/drivers/usb/typec/retimer.c
@@ -122,8 +122,13 @@ typec_retimer_register(struct device *parent, const struct typec_retimer_desc *d
 	retimer->dev.class = &retimer_class;
 	retimer->dev.type = &typec_retimer_dev_type;
 	retimer->dev.driver_data = desc->drvdata;
-	dev_set_name(&retimer->dev, "%s-retimer",
+	ret = dev_set_name(&retimer->dev, "%s-retimer",
 		     desc->name ? desc->name : dev_name(parent));
+	if (ret) {
+		dev_err(parent, "failed to register retimer (%d)\n", ret);
+		put_device(&retimer->dev);
+		return ERR_PTR(ret);
+	}
 
 	ret = device_add(&retimer->dev);
 	if (ret) {
-- 
2.30.2