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| author | Dong Aisheng <aisheng.dong@nxp.com> | 2021-03-09 20:58:38 +0800 |
|---|---|---|
| committer | Chanwoo Choi <cw00.choi@samsung.com> | 2021-04-08 13:14:51 +0900 |
| commit | b19e13463a1054b1b51f4314a1a53da02aed776f (patch) | |
| tree | e5b142d14f0e40ee05e3f864a02bb3158cac3b47 /drivers/devfreq | |
| parent | 5f104f9fc1bb1423058b98b8a64b01af70f44547 (diff) | |
| download | linux-b19e13463a1054b1b51f4314a1a53da02aed776f.tar.bz2 | |
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 <aisheng.dong@nxp.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Diffstat (limited to 'drivers/devfreq')
| -rw-r--r-- | drivers/devfreq/governor.h | 3 |
1 files changed, 3 insertions, 0 deletions
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 */ |