5.15-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ye Zhang <ye.zhang@xxxxxxxxxxxxxx>
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@xxxxxxxxxxxxxxx> # 5.11+
Signed-off-by: Ye Zhang <ye.zhang@xxxxxxxxxxxxxx>
Reviewed-by: Dhruva Gole <d-gole@xxxxxx>
Reviewed-by: Lukasz Luba <lukasz.luba@xxxxxxx>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
Signed-off-by: Lukasz Luba <lukasz.luba@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/thermal/devfreq_cooling.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/thermal/devfreq_cooling.c
+++ b/drivers/thermal/devfreq_cooling.c
@@ -199,7 +199,7 @@ static int devfreq_cooling_get_requested
res = dfc->power_ops->get_real_power(df, power, freq, voltage);
if (!res) {
- state = dfc->capped_state;
+ state = dfc->max_state - dfc->capped_state;
dfc->res_util = dfc->em_pd->table[state].power;
dfc->res_util *= SCALE_ERROR_MITIGATION;
