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| author | Ye Zhang <ye.zhang@rock-chips.com> | 2024-03-21 18:21:00 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-04-03 15:28:56 +0200 |
| commit | be4f3af178cb9804ba8d174bce3c9732842dcdf8 (patch) | |
| tree | 179360b09c83966320e2919a7904dbec24925cb6 | |
| parent | cc80b5d7fbef8fed43cae6dcc11685488b80e801 (diff) | |
| download | linux-stable-be4f3af178cb9804ba8d174bce3c9732842dcdf8.tar.gz linux-stable-be4f3af178cb9804ba8d174bce3c9732842dcdf8.tar.bz2 linux-stable-be4f3af178cb9804ba8d174bce3c9732842dcdf8.zip | |
thermal: devfreq_cooling: Fix perf state when calculate dfc res_util
commit a26de34b3c77ae3a969654d94be49e433c947e3b upstream.
The issue occurs when the devfreq cooling device uses the EM power model
and the get_real_power() callback is provided by the driver.
The EM power table is sorted ascending，can't index the table by cooling
device state，so convert cooling state to performance state by
dfc->max_state - dfc->capped_state.
Fixes: 615510fe13bd ("thermal: devfreq_cooling: remove old power model and use EM")
Cc: 5.11+ <stable@vger.kernel.org> # 5.11+
Signed-off-by: Ye Zhang <ye.zhang@rock-chips.com>
Reviewed-by: Dhruva Gole <d-gole@ti.com>
Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/thermal/devfreq_cooling.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/thermal/devfreq_cooling.c b/drivers/thermal/devfreq_cooling.c index 262e62ab6cf2..90b828bcca24 100644 --- a/drivers/thermal/devfreq_cooling.c +++ b/drivers/thermal/devfreq_cooling.c @@ -201,7 +201,7 @@ static int devfreq_cooling_get_requested_power(struct thermal_cooling_device *cd res = dfc->power_ops->get_real_power(df, power, freq, voltage); if (!res) { - state = dfc->capped_state; + state = dfc->max_state - dfc->capped_state; /* Convert EM power into milli-Watts first */ dfc->res_util = dfc->em_pd->table[state].power; |