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| author | Viresh Kumar <viresh.kumar@linaro.org> | 2013-12-24 07:11:01 +0530 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-12-29 15:31:21 +0100 |
| commit | 08fd8c1cf0a99abf34e09a8b99b74872e0d73a23 (patch) | |
| tree | e91ccb6f0b9f6d7fc5e21f7d8c480ff7c19af666 /drivers/cpufreq/cpufreq.c | |
| parent | 72368d122c7479aa6e14fbbd334717b8a0c157a6 (diff) | |
| download | linux-08fd8c1cf0a99abf34e09a8b99b74872e0d73a23.tar.gz linux-08fd8c1cf0a99abf34e09a8b99b74872e0d73a23.tar.bz2 linux-08fd8c1cf0a99abf34e09a8b99b74872e0d73a23.zip | |
cpufreq: preserve user_policy across suspend/resume
Prevent __cpufreq_add_dev() from overwriting the existing values of
user_policy.{min|max|policy|governor} with defaults during resume
from system suspend.
Fixes: 5302c3fb2e62 ("cpufreq: Perform light-weight init/teardown during suspend/resume")
Reported-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Cc: 3.12+ <stable@vger.kernel.org> # 3.12+
[rjw: Changelog]
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 | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index f13a663d1da5..8d19f7c06010 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -839,9 +839,6 @@ static void cpufreq_init_policy(struct cpufreq_policy *policy) /* set default policy */ ret = cpufreq_set_policy(policy, &new_policy); - policy->user_policy.policy = policy->policy; - policy->user_policy.governor = policy->governor; - if (ret) { pr_debug("setting policy failed\n"); if (cpufreq_driver->exit) @@ -1071,8 +1068,10 @@ static int __cpufreq_add_dev(struct device *dev, struct subsys_interface *sif, */ cpumask_and(policy->cpus, policy->cpus, cpu_online_mask); - policy->user_policy.min = policy->min; - policy->user_policy.max = policy->max; + if (!frozen) { + policy->user_policy.min = policy->min; + policy->user_policy.max = policy->max; + } blocking_notifier_call_chain(&cpufreq_policy_notifier_list, CPUFREQ_START, policy); @@ -1103,6 +1102,11 @@ static int __cpufreq_add_dev(struct device *dev, struct subsys_interface *sif, cpufreq_init_policy(policy); + if (!frozen) { + policy->user_policy.policy = policy->policy; + policy->user_policy.governor = policy->governor; + } + kobject_uevent(&policy->kobj, KOBJ_ADD); up_read(&cpufreq_rwsem); |