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PM / devfreq: Check get_dev_status in devfreq_update_stats

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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 <aisheng.dong@nxp.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
This commit is contained in:
Dong Aisheng 2021-03-09 20:58:38 +08:00 • committed by Chanwoo Choi
parent 5f104f9fc1
commit b19e13463a
1 changed files with 3 additions and 0 deletions
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3
drivers/devfreq/governor.h
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@ -91,6 +91,9 @@ int devfreq_update_target(struct devfreq *devfreq, unsigned long freq);
static inline int devfreq_update_stats(struct devfreq *df) 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); return df->profile->get_dev_status(df->dev.parent, &df->last_status);
} }
#endif /* _GOVERNOR_H */ #endif /* _GOVERNOR_H */