linux-kernel - [PATCH v2] usb: gadget: m66592-udc: Add check for clk

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Message-Id: <20241226013301.683202-1-zmw12306@gmail.com>
Date: Wed, 25 Dec 2024 20:33:01 -0500
From: Mingwei Zheng <zmw12306@...il.com>
To: gregkh@...uxfoundation.org
Cc: u.kleine-koenig@...libre.com,
	linux-usb@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Mingwei Zheng <zmw12306@...il.com>,
	Jiasheng Jiang <jiashengjiangcool@...il.com>
Subject: [PATCH v2] usb: gadget: m66592-udc: Add check for clk_enable()

The APP-Miner reported the missing check.
Add check for the return value of clk_enable() to catch the potential
error.

Fixes: b4822e2317e8 ("usb: gadget: m66592-udc: Convert to use module_platform_driver()")
Signed-off-by: Mingwei Zheng <zmw12306@...il.com>
Signed-off-by: Jiasheng Jiang <jiashengjiangcool@...il.com>
---
Changelog:

v1 -> v2

1. Add tool name in commit msg.
---
 drivers/usb/gadget/udc/m66592-udc.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/gadget/udc/m66592-udc.c b/drivers/usb/gadget/udc/m66592-udc.c
index a938b2af0944..bf408476a24c 100644
--- a/drivers/usb/gadget/udc/m66592-udc.c
+++ b/drivers/usb/gadget/udc/m66592-udc.c
@@ -1606,7 +1606,11 @@ static int m66592_probe(struct platform_device *pdev)
 			ret = PTR_ERR(m66592->clk);
 			goto clean_up2;
 		}
-		clk_enable(m66592->clk);
+		ret = clk_enable(m66592->clk);
+		if (ret) {
+			clk_put(m66592->clk);
+			goto clean_up2;
+		}
 	}
 
 	INIT_LIST_HEAD(&m66592->gadget.ep_list);
-- 
2.34.1