acpi-cpufreq: Fix an ACPI perf unregister issue

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As policy->cpu may not be same in acpi_cpufreq_cpu_init() and
acpi_cpufreq_cpu_exit(). There is a risk that we use different CPU
to un/register ACPI performance. So acpi_processor_unregister_performance()
may not be able to do the cleanup work. That causes a memory leak. And
if there will be another acpi_processor_register_performance() call,
it may also fail thanks to the internal check of pr->performace.

So add a new struct acpi_cpufreq_data field, acpi_perf_cpu, to fix
this issue.

Signed-off-by: Pan Xinhui <xinhuix.pan@intel.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
[ rjw: Changelog ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

...

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Pan Xinhui 2015-07-10 14:36:20 +08:00 • committed by Rafael J. Wysocki

parent 7f0fa40f5a

commit 8cfcfd3900

1 changed files with 3 additions and 1 deletions

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drivers/cpufreq/acpi-cpufreq.c

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