linux-kernel - [PATCH] cpufreq: powernow-k8: Use related_cpus instead of cpus in driver.exit()

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <20230826095113.1137177-1-liaochang1@huawei.com>
Date:   Sat, 26 Aug 2023 09:51:13 +0000
From:   Liao Chang <liaochang1@...wei.com>
To:     <rafael@...nel.org>, <viresh.kumar@...aro.org>,
        <srivatsa.bhat@...ux.vnet.ibm.com>
CC:     <linux-pm@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH] cpufreq: powernow-k8: Use related_cpus instead of cpus in driver.exit()

Since the 'cpus' field of policy structure will become empty in the
cpufreq core API, it is better to use 'related_cpus' in the exit()
callback of driver.

Fixes: c3274763bfc3 ("cpufreq: powernow-k8: Initialize per-cpu data-structures properly")
Signed-off-by: Liao Chang <liaochang1@...wei.com>
---
 drivers/cpufreq/powernow-k8.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/cpufreq/powernow-k8.c b/drivers/cpufreq/powernow-k8.c
index d289036beff2..b10f7a1b77f1 100644
--- a/drivers/cpufreq/powernow-k8.c
+++ b/drivers/cpufreq/powernow-k8.c
@@ -1101,7 +1101,8 @@ static int powernowk8_cpu_exit(struct cpufreq_policy *pol)
 
 	kfree(data->powernow_table);
 	kfree(data);
-	for_each_cpu(cpu, pol->cpus)
+	/* pol->cpus will be empty here, use related_cpus instead. */
+	for_each_cpu(cpu, pol->related_cpus)
 		per_cpu(powernow_data, cpu) = NULL;
 
 	return 0;
-- 
2.34.1