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| author | Viresh Kumar <viresh.kumar@linaro.org> | 2017-03-21 11:36:06 +0530 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-03-30 09:41:27 +0200 |
| commit | f565084692d624718d53dbfcc0d9dc31c62bdb78 (patch) | |
| tree | 95e62b43f02690a7b98300d08861beef40ae6dd3 /drivers | |
| parent | b9ed800f71889795e1f329d4ee84d7778a16797f (diff) | |
| download | linux-stable-f565084692d624718d53dbfcc0d9dc31c62bdb78.tar.gz linux-stable-f565084692d624718d53dbfcc0d9dc31c62bdb78.tar.bz2 linux-stable-f565084692d624718d53dbfcc0d9dc31c62bdb78.zip | |
cpufreq: Restore policy min/max limits on CPU online
commit ff010472fb75670cb5c08671e820eeea3af59c87 upstream.
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>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -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 272608f102fb..cac4a92259da 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -1190,6 +1190,9 @@ 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) { |