linux-kernel - [PATCH] cpufreq: nforce2: fix PCI device reference leaks in nforce2_fsb

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Message-Id: <20250902070215.2383320-1-linmq006@gmail.com>
Date: Tue,  2 Sep 2025 15:02:13 +0800
From: Miaoqian Lin <linmq006@...il.com>
To: "Rafael J. Wysocki" <rafael@...nel.org>,
	Viresh Kumar <viresh.kumar@...aro.org>,
	linux-pm@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: linmq006@...il.com,
	stable@...r.kernel.org
Subject: [PATCH] cpufreq: nforce2: fix PCI device reference leaks in nforce2_fsb_read

Add missing pci_dev_put() calls to release device references
obtained via pci_get_subsys().

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Cc: stable@...r.kernel.org
Signed-off-by: Miaoqian Lin <linmq006@...il.com>
---
 drivers/cpufreq/cpufreq-nforce2.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/cpufreq/cpufreq-nforce2.c b/drivers/cpufreq/cpufreq-nforce2.c
index fedad1081973..0a49cb9d7ba1 100644
--- a/drivers/cpufreq/cpufreq-nforce2.c
+++ b/drivers/cpufreq/cpufreq-nforce2.c
@@ -148,13 +148,16 @@ static unsigned int nforce2_fsb_read(int bootfsb)
 	/* Check if PLL register is already set */
 	pci_read_config_byte(nforce2_dev, NFORCE2_PLLENABLE, (u8 *)&temp);
 
-	if (bootfsb || !temp)
+	if (bootfsb || !temp) {
+		pci_dev_put(nforce2_sub5);
 		return fsb;
+	}
 
 	/* Use PLL register FSB value */
 	pci_read_config_dword(nforce2_dev, NFORCE2_PLLREG, &temp);
 	fsb = nforce2_calc_fsb(temp);
 
+	pci_dev_put(nforce2_sub5);
 	return fsb;
 }
 
-- 
2.35.1