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Thermal: Tidy up error handling in powerclamp_init

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This patch
 * adds missing kfree() for cpu_clamping_mask
 * adds return value checking for alloc_percpu()
 * unregister hotcpu notifier in exit path

Signed-off-by: Durgadoss R <durgadoss.r@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
This commit is contained in:
durgadoss.r@intel.com 2013-10-04 21:53:24 +05:30 committed by Zhang Rui
parent 22356f447c
commit c32a5087b7
1 changed files with 21 additions and 3 deletions
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24
drivers/thermal/intel_powerclamp.c
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@ -758,21 +758,39 @@ static int powerclamp_init(void)
/* probe cpu features and ids here */
retval = powerclamp_probe();
if (retval)
return retval;
goto exit_free;
/* set default limit, maybe adjusted during runtime based on feedback */
window_size = 2;
register_hotcpu_notifier(&powerclamp_cpu_notifier);
powerclamp_thread = alloc_percpu(struct task_struct *);
if (!powerclamp_thread) {
retval = -ENOMEM;
goto exit_unregister;
}
cooling_dev = thermal_cooling_device_register("intel_powerclamp", NULL,
&powerclamp_cooling_ops);
if (IS_ERR(cooling_dev))
return -ENODEV;
if (IS_ERR(cooling_dev)) {
retval = -ENODEV;
goto exit_free_thread;
}
if (!duration)
duration = jiffies_to_msecs(DEFAULT_DURATION_JIFFIES);
powerclamp_create_debug_files();
return 0;
exit_free_thread:
free_percpu(powerclamp_thread);
exit_unregister:
unregister_hotcpu_notifier(&powerclamp_cpu_notifier);
exit_free:
kfree(cpu_clamping_mask);
return retval;
}
module_init(powerclamp_init);