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cpufreq: Exit governor when failed to start old governor

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Detect the result of starting old governor in cpufreq_set_policy(). If it
fails, exit the governor and clear policy->governor.

Signed-off-by: Lifeng Zheng <zhenglifeng1@huawei.com>
Link: https://patch.msgid.link/20250709104145.2348017-5-zhenglifeng1@huawei.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Lifeng Zheng
2025-07-14 19:38:10 +02:00
committed by Rafael J. Wysocki
parent 908981d85f
commit 0ae2044050
1 changed files with 5 additions and 3 deletions
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drivers/cpufreq/cpufreq.c
+5 -3
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@@ -2711,10 +2711,12 @@ static int cpufreq_set_policy(struct cpufreq_policy *policy,
pr_debug("starting governor %s failed\n", policy->governor->name);
if (old_gov) {
policy->governor = old_gov;
if (cpufreq_init_governor(policy))
if (cpufreq_init_governor(policy)) {
policy->governor = NULL;
else
cpufreq_start_governor(policy);
} else if (cpufreq_start_governor(policy)) {
cpufreq_exit_governor(policy);
policy->governor = NULL;
}
}
return ret;