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cpufreq: Initialize cpufreq-based frequency-invariance later

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The cpufreq-based invariance is enabled in cpufreq_register_driver(),
but never disabled after registration fails. Move the invariance
initialization to where all other initializations have been successfully
done to solve this problem.

Fixes: 874f635310 ("cpufreq: report whether cpufreq supports Frequency Invariance (FI)")
Signed-off-by: Lifeng Zheng <zhenglifeng1@huawei.com>
Link: https://patch.msgid.link/20250709104145.2348017-2-zhenglifeng1@huawei.com
[ rjw: New subject ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Lifeng Zheng 2025-07-09 18:41:42 +08:00 committed by Rafael J. Wysocki
parent 5d6ecaaa92
commit 2a6c727387
1 changed files with 9 additions and 9 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

18
drivers/cpufreq/cpufreq.c
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@ -2940,15 +2940,6 @@ int cpufreq_register_driver(struct cpufreq_driver *driver_data)
cpufreq_driver = driver_data;
write_unlock_irqrestore(&cpufreq_driver_lock, flags);
/*
* Mark support for the scheduler's frequency invariance engine for
* drivers that implement target(), target_index() or fast_switch().
*/
if (!cpufreq_driver->setpolicy) {
static_branch_enable_cpuslocked(&cpufreq_freq_invariance);
pr_debug("supports frequency invariance");
}
if (driver_data->setpolicy)
driver_data->flags |= CPUFREQ_CONST_LOOPS;
@ -2979,6 +2970,15 @@ int cpufreq_register_driver(struct cpufreq_driver *driver_data)
hp_online = ret;
ret = 0;
/*
* Mark support for the scheduler's frequency invariance engine for
* drivers that implement target(), target_index() or fast_switch().
*/
if (!cpufreq_driver->setpolicy) {
static_branch_enable_cpuslocked(&cpufreq_freq_invariance);
pr_debug("supports frequency invariance");
}
pr_debug("driver %s up and running\n", driver_data->name);
goto out;