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| author | gaurav jindal <gauravjindal1104@gmail.com> | 2018-01-05 14:01:30 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2018-01-05 14:01:30 +0100 |
| commit | 3cfd68b5ba8737d28bfcf9b6487ea4d9216b8504 (patch) | |
| tree | cf579ba6621e0b44c11f2a8afaa9138d56caa6ec /drivers/cpuidle | |
| parent | Linux 4.15-rc6 (diff) | |
| download | linux-3cfd68b5ba8737d28bfcf9b6487ea4d9216b8504.tar.xz linux-3cfd68b5ba8737d28bfcf9b6487ea4d9216b8504.zip | |
cpuidle: Avoid NULL argument in cpuidle_switch_governor()
Checks if the new governor is NULL before updating the
cupidle_curr_governor.
Signed-off-by: gaurav jindal <gauravjindal1104@gmail.com>
[ rjw : Subject ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/cpuidle')
| -rw-r--r-- | drivers/cpuidle/governor.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/cpuidle/governor.c b/drivers/cpuidle/governor.c index 4e78263e34a4..5d359aff3cc5 100644 --- a/drivers/cpuidle/governor.c +++ b/drivers/cpuidle/governor.c @@ -36,14 +36,15 @@ static struct cpuidle_governor * __cpuidle_find_governor(const char *str) /** * cpuidle_switch_governor - changes the governor * @gov: the new target governor - * - * NOTE: "gov" can be NULL to specify disabled * Must be called with cpuidle_lock acquired. */ int cpuidle_switch_governor(struct cpuidle_governor *gov) { struct cpuidle_device *dev; + if (!gov) + return -EINVAL; + if (gov == cpuidle_curr_governor) return 0; |