linux-kernel - [PATCH] cpufreq: loongson3: Check error for devm_mutex

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Message-ID: <20241105032053.1782082-1-ruanjinjie@huawei.com>
Date: Tue, 5 Nov 2024 11:20:53 +0800
From: Jinjie Ruan <ruanjinjie@...wei.com>
To: <chenhuacai@...nel.org>, <kernel@...0n.name>, <rafael@...nel.org>,
	<viresh.kumar@...aro.org>, <zhoubinbin@...ngson.cn>,
	<loongarch@...ts.linux.dev>, <linux-pm@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>
CC: <ruanjinjie@...wei.com>
Subject: [PATCH] cpufreq: loongson3: Check error for devm_mutex_init()

devm_mutex_init() may return error, and the avoidance of checking
the error code from devm_mutex_init() call diminishes the point of
using devm variant of it. Add the missed check.

Fixes: ccf51454145b ("cpufreq: Add Loongson-3 CPUFreq driver support")
Signed-off-by: Jinjie Ruan <ruanjinjie@...wei.com>
---
 drivers/cpufreq/loongson3_cpufreq.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/cpufreq/loongson3_cpufreq.c b/drivers/cpufreq/loongson3_cpufreq.c
index 6b5e6798d9a2..a923e196ec86 100644
--- a/drivers/cpufreq/loongson3_cpufreq.c
+++ b/drivers/cpufreq/loongson3_cpufreq.c
@@ -346,8 +346,11 @@ static int loongson3_cpufreq_probe(struct platform_device *pdev)
 {
 	int i, ret;
 
-	for (i = 0; i < MAX_PACKAGES; i++)
-		devm_mutex_init(&pdev->dev, &cpufreq_mutex[i]);
+	for (i = 0; i < MAX_PACKAGES; i++) {
+		ret = devm_mutex_init(&pdev->dev, &cpufreq_mutex[i]);
+		if (ret)
+			return ret;
+	}
 
 	ret = do_service_request(0, 0, CMD_GET_VERSION, 0, 0);
 	if (ret <= 0)
-- 
2.34.1