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| author | Viresh Kumar <viresh.kumar@linaro.org> | 2023-10-27 10:10:04 +0300 |
|---|---|---|
| committer | Viresh Kumar <viresh.kumar@linaro.org> | 2023-11-28 13:33:04 +0300 |
| commit | 073d3d2ca7d462afc8159ca0175675b9b7b4f162 (patch) | |
| tree | 3cfa67ed8a9901682bb8b14e4634e47968d32466 /include/linux/pm_opp.h | |
| parent | 4c58e9d85c24b5281a2d39a3e6510b5f3b7fc687 (diff) | |
| download | linux-073d3d2ca7d462afc8159ca0175675b9b7b4f162.tar.xz | |
OPP: Level zero is valid
The level zero can be used by some OPPs to drop performance state vote
for the device. It is perfectly fine to allow the same.
_set_opp_level() considers it as an invalid value currently and returns
early.
In order to support this properly, initialize the level field with
U32_MAX, which denotes unused level field.
Reported-by: Stephan Gerhold <stephan.gerhold@kernkonzept.com>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Tested-by: Stephan Gerhold <stephan.gerhold@kernkonzept.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Diffstat (limited to 'include/linux/pm_opp.h')
| -rw-r--r-- | include/linux/pm_opp.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/include/linux/pm_opp.h b/include/linux/pm_opp.h index ccd97bcef269..af53101a1383 100644 --- a/include/linux/pm_opp.h +++ b/include/linux/pm_opp.h @@ -92,9 +92,12 @@ struct dev_pm_opp_config { struct device ***virt_devs; }; +#define OPP_LEVEL_UNSET U32_MAX + /** * struct dev_pm_opp_data - The data to use to initialize an OPP. - * @level: The performance level for the OPP. + * @level: The performance level for the OPP. Set level to OPP_LEVEL_UNSET if + * level field isn't used. * @freq: The clock rate in Hz for the OPP. * @u_volt: The voltage in uV for the OPP. */ |