From 0e8d8560fe022ae871806a8c1b1b3b756c02abc1 Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Thu, 24 Apr 2025 21:50:17 +0530 Subject: [PATCH] cpufreq: Preserve policy's boost state after resume If the global boost flag was enabled and policy boost flag was disabled before a suspend resume cycle, cpufreq_online() will enable the policy boost flag on resume. While it is important for the policy boost flag to mirror the global boost flag when a policy is first created, it should be avoided when the policy is reinitialized (for example after a suspend resume cycle). Though, if the global boost flag is disabled at this point of time, we want to make sure policy boost flag is disabled too. Reviewed-by: Lifeng Zheng Signed-off-by: Viresh Kumar Link: https://patch.msgid.link/de5c72a0af101049204305c73cd30eb3a3e7b4a0.1745511526.git.viresh.kumar@linaro.org Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/cpufreq.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index b4adf4a6f45a..464bf20bcebf 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -1623,8 +1623,13 @@ static int cpufreq_online(unsigned int cpu) if (new_policy && cpufreq_thermal_control_enabled(cpufreq_driver)) policy->cdev = of_cpufreq_cooling_register(policy); - /* Let the per-policy boost flag mirror the cpufreq_driver boost during init */ - if (cpufreq_driver->set_boost && policy->boost_supported) { + /* + * Let the per-policy boost flag mirror the cpufreq_driver boost during + * initialization for a new policy. For an existing policy, maintain the + * previous boost value unless global boost is disabled. + */ + if (cpufreq_driver->set_boost && policy->boost_supported && + (new_policy || !cpufreq_boost_enabled())) { ret = policy_set_boost(policy, cpufreq_boost_enabled()); if (ret) { /* If the set_boost fails, the online operation is not affected */ -- 2.50.1