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| author | Pan Bian <bianpan2016@163.com> | 2016-12-03 23:02:27 +0800 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2016-12-06 02:24:14 +0100 |
| commit | 8f6040cebd2382a5cfb201419d40e7a4a193a412 (patch) | |
| tree | 66bb6d61a0eae69f10ff0ce30bde5054957ef078 /drivers/cpuidle | |
| parent | fb1013a01673acf7e94e38cda169828ac76b345a (diff) | |
| download | linux-8f6040cebd2382a5cfb201419d40e7a4a193a412.tar.bz2 | |
cpuidle: fix improper return value on error
In function cpuidle_add_state_sysfs(), variable ret takes the return
value. Its value should be negative on errors. Because ret is reset in
the loop, its value will be 0 during the second and after repeat of the
loop. If kzalloc() returns a NULL pointer then, it will return 0. It may
be better to explicitly assign "-ENOMEM" when the call to kzalloc()
fails.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=188901
Signed-off-by: Pan Bian <bianpan2016@163.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/cpuidle')
| -rw-r--r-- | drivers/cpuidle/sysfs.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/cpuidle/sysfs.c b/drivers/cpuidle/sysfs.c index 832a2c3f01ff..c5adc8c9ac43 100644 --- a/drivers/cpuidle/sysfs.c +++ b/drivers/cpuidle/sysfs.c @@ -403,8 +403,10 @@ static int cpuidle_add_state_sysfs(struct cpuidle_device *device) /* state statistics */ for (i = 0; i < drv->state_count; i++) { kobj = kzalloc(sizeof(struct cpuidle_state_kobj), GFP_KERNEL); - if (!kobj) + if (!kobj) { + ret = -ENOMEM; goto error_state; + } kobj->state = &drv->states[i]; kobj->state_usage = &device->states_usage[i]; init_completion(&kobj->kobj_unregister); |