diff options
Diffstat (limited to 'drivers/devfreq/devfreq.c')
| -rw-r--r-- | drivers/devfreq/devfreq.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/devfreq/devfreq.c b/drivers/devfreq/devfreq.c index 478006b7764a..bf3ea7603a58 100644 --- a/drivers/devfreq/devfreq.c +++ b/drivers/devfreq/devfreq.c @@ -137,6 +137,10 @@ static int devfreq_update_status(struct devfreq *devfreq, unsigned long freq) cur_time = jiffies; + /* Immediately exit if previous_freq is not initialized yet. */ + if (!devfreq->previous_freq) + goto out; + prev_lev = devfreq_get_freq_level(devfreq, devfreq->previous_freq); if (prev_lev < 0) { ret = prev_lev; @@ -594,17 +598,19 @@ struct devfreq *devfreq_add_device(struct device *dev, if (devfreq->governor) err = devfreq->governor->event_handler(devfreq, DEVFREQ_GOV_START, NULL); - mutex_unlock(&devfreq_list_lock); if (err) { dev_err(dev, "%s: Unable to start governor for the device\n", __func__); goto err_init; } + mutex_unlock(&devfreq_list_lock); return devfreq; err_init: list_del(&devfreq->node); + mutex_unlock(&devfreq_list_lock); + device_unregister(&devfreq->dev); err_out: return ERR_PTR(err); |