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| author | Viresh Kumar <viresh.kumar@linaro.org> | 2017-03-21 11:36:06 +0530 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2017-03-22 02:38:27 +0100 |
| commit | ff010472fb75670cb5c08671e820eeea3af59c87 (patch) | |
| tree | f82f32db99ebc5cd9c5f2b8d67c3fec364c519f7 /drivers/cpufreq/cpufreq.c | |
| parent | 9b4f603e7a9f4282aec451063ffbbb8bb410dcd9 (diff) | |
| download | linux-stable-ff010472fb75670cb5c08671e820eeea3af59c87.tar.gz linux-stable-ff010472fb75670cb5c08671e820eeea3af59c87.tar.bz2 linux-stable-ff010472fb75670cb5c08671e820eeea3af59c87.zip | |
cpufreq: Restore policy min/max limits on CPU online
On CPU online the cpufreq core restores the previous governor (or
the previous "policy" setting for ->setpolicy drivers), but it does
not restore the min/max limits at the same time, which is confusing,
inconsistent and real pain for users who set the limits and then
suspend/resume the system (using full suspend), in which case the
limits are reset on all CPUs except for the boot one.
Fix this by making cpufreq_online() restore the limits when an inactive
policy is brought online.
The commit log and patch are inspired from Rafael's earlier work.
Reported-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Cc: 4.3+ <stable@vger.kernel.org> # 4.3+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/cpufreq/cpufreq.c')
| -rw-r--r-- | drivers/cpufreq/cpufreq.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index b8ff617d449d..5dbdd261aa73 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -1184,6 +1184,9 @@ static int cpufreq_online(unsigned int cpu) for_each_cpu(j, policy->related_cpus) per_cpu(cpufreq_cpu_data, j) = policy; write_unlock_irqrestore(&cpufreq_driver_lock, flags); + } else { + policy->min = policy->user_policy.min; + policy->max = policy->user_policy.max; } if (cpufreq_driver->get && !cpufreq_driver->setpolicy) { |