linux-kernel - [PATCH v1 1/1] cpufreq: loongson: Check for error code from devm_mutex

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Message-ID: <20241030162930.2111255-1-andriy.shevchenko@linux.intel.com>
Date: Wed, 30 Oct 2024 18:29:30 +0200
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Viresh Kumar <viresh.kumar@...aro.org>,
	Huacai Chen <chenhuacai@...nel.org>,
	loongarch@...ts.linux.dev,
	linux-pm@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: WANG Xuerui <kernel@...0n.name>,
	"Rafael J. Wysocki" <rafael@...nel.org>,
	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: [PATCH v1 1/1] cpufreq: loongson: Check for error code from devm_mutex_init() call

Even if it's not critical, the avoidance of checking the error code
from devm_mutex_init() call today diminishes the point of using devm
variant of it. Tomorrow it may even leak something. Add the missed
check.

Fixes: ccf51454145b ("cpufreq: Add Loongson-3 CPUFreq driver support")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.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 61ebebf69455..bd34bf0fafa5 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)
-- 
2.43.0.rc1.1336.g36b5255a03ac