5.15-stable review patch. If anyone has any objections, please let me know.
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From: Ye Zhang ye.zhang@rock-chips.com
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: Lukasz Luba lukasz.luba@arm.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- 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;