From b19e13463a1054b1b51f4314a1a53da02aed776f Mon Sep 17 00:00:00 2001 From: Dong Aisheng Date: Tue, 9 Mar 2021 20:58:38 +0800 Subject: PM / devfreq: Check get_dev_status in devfreq_update_stats Check .get_dev_status() in devfreq_update_stats in case it's abused when a device does not provide it. Signed-off-by: Dong Aisheng Signed-off-by: Chanwoo Choi --- drivers/devfreq/governor.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers/devfreq') diff --git a/drivers/devfreq/governor.h b/drivers/devfreq/governor.h index 70f44b3ca42e..244634465170 100644 --- a/drivers/devfreq/governor.h +++ b/drivers/devfreq/governor.h @@ -91,6 +91,9 @@ int devfreq_update_target(struct devfreq *devfreq, unsigned long freq); static inline int devfreq_update_stats(struct devfreq *df) { + if (!df->profile->get_dev_status) + return -EINVAL; + return df->profile->get_dev_status(df->dev.parent, &df->last_status); } #endif /* _GOVERNOR_H */ -- cgit v1.2.3