mirrors
/
linux-stable
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
1
0
Fork 0
Code Issues Releases Wiki Activity

thermal: devfreq_cooling: Fix perf state when calculate dfc res_util 

commit a26de34b3c 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: 615510fe13 ("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>
This commit is contained in:
Ye Zhang 2024-03-21 18:21:00 +08:00 committed by Greg Kroah-Hartman
parent 82bc721311
commit 696c6c83d9
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/thermal/devfreq_cooling.c
View File

@ -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;