diff options
| author | Dirk Brandewie <dirk.j.brandewie@intel.com> | 2013-10-15 11:06:14 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-11-13 12:05:30 +0900 |
| commit | f606b358df6e174cd57f0509e5f5299bd4a73854 (patch) | |
| tree | 2b1b033d875dbdeff0c1f3bd1ec25f9f31562d17 /drivers/cpufreq | |
| parent | 40f3a9e5aea1753ececbcbbfe483b0c05788b001 (diff) | |
| download | lwn-f606b358df6e174cd57f0509e5f5299bd4a73854.tar.gz lwn-f606b358df6e174cd57f0509e5f5299bd4a73854.zip | |
cpufreq / intel_pstate: Fix max_perf_pct on resume
commit 52e0a509e5d6f902ec26bc2a8bb02b137dc453be upstream.
If the system is suspended while max_perf_pct is less than 100 percent
or no_turbo set policy->{min,max} will be set incorrectly with scaled
values which turn the scaled values into hard limits.
References: https://bugzilla.kernel.org/show_bug.cgi?id=61241
Reported-by: Patrick Bartels <petzicus@googlemail.com>
Signed-off-by: Dirk Brandewie <dirk.j.brandewie@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/cpufreq')
| -rw-r--r-- | drivers/cpufreq/intel_pstate.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c index 6d6a0b48eb75..9520e3b90bde 100644 --- a/drivers/cpufreq/intel_pstate.c +++ b/drivers/cpufreq/intel_pstate.c @@ -629,8 +629,8 @@ static int __cpuinit intel_pstate_cpu_exit(struct cpufreq_policy *policy) static int __cpuinit intel_pstate_cpu_init(struct cpufreq_policy *policy) { - int rc, min_pstate, max_pstate; struct cpudata *cpu; + int rc; rc = intel_pstate_init_cpu(policy->cpu); if (rc) @@ -644,9 +644,8 @@ static int __cpuinit intel_pstate_cpu_init(struct cpufreq_policy *policy) else policy->policy = CPUFREQ_POLICY_POWERSAVE; - intel_pstate_get_min_max(cpu, &min_pstate, &max_pstate); - policy->min = min_pstate * 100000; - policy->max = max_pstate * 100000; + policy->min = cpu->pstate.min_pstate * 100000; + policy->max = cpu->pstate.turbo_pstate * 100000; /* cpuinfo and default policy values */ policy->cpuinfo.min_freq = cpu->pstate.min_pstate * 100000; |