linux-kernel - [PATCH] char: warnning msg for devm_snprintf failed to allocate memory.

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Message-Id: <20240124051254.476341-1-huxiaoying@kylinos.cn>
Date: Wed, 24 Jan 2024 13:12:54 +0800
From: Tom Hu <huxiaoying@...inos.cn>
To: linux-kernel@...r.kernel.org
Cc: minyard@....org,
	xiaoying_hu@....com,
	huxiaoying <huxiaoying@...inos.cn>
Subject: [PATCH] char: warnning msg for devm_snprintf failed to allocate memory.

From: huxiaoying <huxiaoying@...inos.cn>

Signed-off-by: Tom Hu <huxiaoying@...inos.cn>
---
 drivers/char/ipmi/ipmb_dev_int.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/char/ipmi/ipmb_dev_int.c b/drivers/char/ipmi/ipmb_dev_int.c
index 49100845fcb7..8e703ecb27c3 100644
--- a/drivers/char/ipmi/ipmb_dev_int.c
+++ b/drivers/char/ipmi/ipmb_dev_int.c
@@ -321,6 +321,9 @@ static int ipmb_probe(struct i2c_client *client)
 	ipmb_dev->miscdev.name = devm_kasprintf(&client->dev, GFP_KERNEL,
 						"%s%d", "ipmb-",
 						client->adapter->nr);
+	if (!ipmb_dev->miscdev.name)
+		pr_warn("Failed to allocate mem to miscdev.name\n");
+
 	ipmb_dev->miscdev.fops = &ipmb_fops;
 	ipmb_dev->miscdev.parent = &client->dev;
 	ret = misc_register(&ipmb_dev->miscdev);
-- 
2.25.1