[PATCH 02/12] PM / devfreq: Fix locking range for making the frequency table

Chanwoo Choi
2017-08-24T01:43:02Z

Even if the freq_table is included in the struct devfreq,
the commit 0ec09ac2cebe ("PM / devfreq: Set the freq_table
of devfreq device") set the frequency table outside the mutex locking.

So, this patch initializes the frequency table within the mutex locking.

Cc: stable@vger.kernel.org
Fixes: 0ec09ac2cebe ("PM / devfreq: Set the freq_table of devfreq device")
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
---
drivers/devfreq/devfreq.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/devfreq/devfreq.c b/drivers/devfreq/devfreq.c
index a1c4ee818614..3c5ccb96e165 100644
--- a/drivers/devfreq/devfreq.c
+++ b/drivers/devfreq/devfreq.c
@@ -553,11 +553,8 @@ struct devfreq *devfreq_add_device(struct device *dev,
devfreq->data = data;
devfreq->nb.notifier_call = devfreq_notifier_call;

- if (!devfreq->profile->max_state && !devfreq->profile->freq_table) {
- mutex_unlock(&devfreq->lock);
+ if (!devfreq->profile->max_state && !devfreq->profile->freq_table)
devfreq_set_freq_table(devfreq);
- mutex_lock(&devfreq->lock);
- }

dev_set_name(&devfreq->dev, "devfreq%d",
atomic_inc_return(&devfreq_no));
--
1.9.1