| From | Kamal Mostafa <> | Subject | [PATCH 3.13 092/162] intel_pstate: Don't lose sysfs settings during cpu offline | Date | Thu, 6 Nov 2014 14:35:56 -0800 |
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3.13.11.11 -stable review patch. If anyone has any objections, please let me know.
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From: Dirk Brandewie <dirk.j.brandewie@intel.com>
commit c034871712730a33e0267095f48b62eae958499c upstream.
The user may have custom settings don't destroy them during suspend.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=80651 Reported-by: Tobias Jakobi <liquid.acid@gmx.net> Signed-off-by: Dirk Brandewie <dirk.j.brandewie@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> [ kamal: backport to 3.13-stable: context ] Signed-off-by: Kamal Mostafa <kamal@canonical.com> --- drivers/cpufreq/intel_pstate.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c index 7d622cd..4469fed 100644 --- a/drivers/cpufreq/intel_pstate.c +++ b/drivers/cpufreq/intel_pstate.c @@ -711,7 +711,9 @@ static int intel_pstate_init_cpu(unsigned int cpunum) if (!id) return -ENODEV; - all_cpu_data[cpunum] = kzalloc(sizeof(struct cpudata), GFP_KERNEL); + if (!all_cpu_data[cpunum]) + all_cpu_data[cpunum] = kzalloc(sizeof(struct cpudata), + GFP_KERNEL); if (!all_cpu_data[cpunum]) return -ENOMEM; @@ -799,8 +801,6 @@ static int intel_pstate_cpu_exit(struct cpufreq_policy *policy) int cpu = policy->cpu; del_timer(&all_cpu_data[cpu]->timer); - kfree(all_cpu_data[cpu]); - all_cpu_data[cpu] = NULL; return 0; } -- 1.9.1
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