diff options
| author | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2014-01-27 22:50:35 -0500 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2014-01-28 22:36:30 +0100 |
| commit | eb8c68ef558e6cba241e7ada54f6b3427cb2bf68 (patch) | |
| tree | c80171d39e7245f02f60d1b6088124316aa9cc27 /drivers/cpufreq | |
| parent | 4f11b85a5f2cc279860da3b9977a9586ff2df167 (diff) | |
acpi-cpufreq: De-register CPU notifier and free struct msr on error.
If cpufreq_register_driver() fails we would free the acpi driver
related structures but not free the ones allocated
by acpi_cpufreq_boost_init() function. This meant that as
the driver error-ed out and a CPU online/offline event came
we would crash and burn as one of the CPU notifiers would point
to garbage.
Fixes: cfc9c8ed03e4 (acpi-cpufreq: Adjust the code to use the common boost attribute)
Acked-by: Lukasz Majewski <l.majewski@samsung.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/cpufreq')
| -rw-r--r-- | drivers/cpufreq/acpi-cpufreq.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/cpufreq/acpi-cpufreq.c b/drivers/cpufreq/acpi-cpufreq.c index 79e5608e71b5..18448a7e9f86 100644 --- a/drivers/cpufreq/acpi-cpufreq.c +++ b/drivers/cpufreq/acpi-cpufreq.c @@ -919,7 +919,7 @@ static void __init acpi_cpufreq_boost_init(void) } } -static void __exit acpi_cpufreq_boost_exit(void) +static void acpi_cpufreq_boost_exit(void) { if (msrs) { unregister_cpu_notifier(&boost_nb); @@ -969,9 +969,10 @@ static int __init acpi_cpufreq_init(void) acpi_cpufreq_boost_init(); ret = cpufreq_register_driver(&acpi_cpufreq_driver); - if (ret) + if (ret) { free_acpi_perf_data(); - + acpi_cpufreq_boost_exit(); + } return ret; } |