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| author | Dirk Brandewie <dirk.brandewie@gmail.com> | 2013-03-05 14:15:27 -0800 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-03-06 23:34:58 +0100 |
| commit | 907cc908108b16ae87b7165be992511c968159f0 (patch) | |
| tree | db9bf7f809c64ccb6678878ad6b828fef2d81395 | |
| parent | 37530f2bda039774bd65aea14cc1d1dd26a82b9e (diff) | |
| download | linux-3.10-907cc908108b16ae87b7165be992511c968159f0.tar.gz linux-3.10-907cc908108b16ae87b7165be992511c968159f0.tar.bz2 linux-3.10-907cc908108b16ae87b7165be992511c968159f0.zip | |
cpufreq / intel_pstate: Fix intel_pstate_init() error path
If cpufreq_register_driver() fails just free memory that has been
allocated and return. intel_pstate_exit() function is removed since we
are built-in only now there is no reason for a module exit procedure.
Reported-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Dirk Brandewie <dirk.j.brandewie@intel.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| -rw-r--r-- | drivers/cpufreq/intel_pstate.c | 39 |
1 files changed, 11 insertions, 28 deletions
diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c index 096fde0ebcb..46a23b65dfc 100644 --- a/drivers/cpufreq/intel_pstate.c +++ b/drivers/cpufreq/intel_pstate.c @@ -747,37 +747,11 @@ static struct cpufreq_driver intel_pstate_driver = { .owner = THIS_MODULE, }; -static void intel_pstate_exit(void) -{ - int cpu; - - sysfs_remove_group(intel_pstate_kobject, - &intel_pstate_attr_group); - debugfs_remove_recursive(debugfs_parent); - - cpufreq_unregister_driver(&intel_pstate_driver); - - if (!all_cpu_data) - return; - - get_online_cpus(); - for_each_online_cpu(cpu) { - if (all_cpu_data[cpu]) { - del_timer_sync(&all_cpu_data[cpu]->timer); - kfree(all_cpu_data[cpu]); - } - } - - put_online_cpus(); - vfree(all_cpu_data); -} -module_exit(intel_pstate_exit); - static int __initdata no_load; static int __init intel_pstate_init(void) { - int rc = 0; + int cpu, rc = 0; const struct x86_cpu_id *id; if (no_load) @@ -802,7 +776,16 @@ static int __init intel_pstate_init(void) intel_pstate_sysfs_expose_params(); return rc; out: - intel_pstate_exit(); + get_online_cpus(); + for_each_online_cpu(cpu) { + if (all_cpu_data[cpu]) { + del_timer_sync(&all_cpu_data[cpu]->timer); + kfree(all_cpu_data[cpu]); + } + } + + put_online_cpus(); + vfree(all_cpu_data); return -ENODEV; } device_initcall(intel_pstate_init); |