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cpuquiet: Fix locking in driver_unregister

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cpuquiet_switch_governors needs to be protected with the cpuquiet_lock.

Change-Id: I948d1190a270b9e8b732eaad80a303560fe9f282
Signed-off-by: Sai Gurrappadi <sgurrappadi@nvidia.com>
Reviewed-on: http://git-master/r/345013
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Peter Boonstoppel <pboonstoppel@nvidia.com>
Reviewed-by: Diwakar Tundlam <dtundlam@nvidia.com>
This commit is contained in:
Sai Gurrappadi 2013-12-12 15:25:53 -08:00 committed by Huang, Tao
parent 6ad827eb42
commit e7e8701d15
1 changed files with 4 additions and 4 deletions
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8
drivers/cpuquiet/driver.c
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2012 NVIDIA CORPORATION. All rights reserved.
* Copyright (c) 2012-2013 NVIDIA CORPORATION. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@ -197,10 +197,10 @@ void cpuquiet_unregister_driver(struct cpuquiet_driver *drv)
return;
}
/* stop current governor first */
cpuquiet_switch_governor(NULL);
mutex_lock(&cpuquiet_lock);
/* Stop current governor first */
cpuquiet_switch_governor(NULL);
cpuquiet_curr_driver = NULL;
for_each_possible_cpu(cpu) {