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| author | Ingo Molnar <mingo@kernel.org> | 2015-10-08 10:52:18 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2015-10-08 10:52:18 +0200 |
| commit | d3df65c198dc2f1deefb73c8427b04d1bdd1b18d (patch) | |
| tree | f348c249146e2a1bbe2040ebecb0c529f5449b84 /drivers/thermal/power_allocator.c | |
| parent | 712df65ccb63da08a484bf57c40b250dfd4103a7 (diff) | |
| parent | 00e6fa5fe15c0eccc95a9d1afc4615e467ee8dc9 (diff) | |
Merge branch 'perf/urgent' into perf/core, before pulling new changes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'drivers/thermal/power_allocator.c')
| -rw-r--r-- | drivers/thermal/power_allocator.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/thermal/power_allocator.c b/drivers/thermal/power_allocator.c index 7ff96270c933..e570ff084add 100644 --- a/drivers/thermal/power_allocator.c +++ b/drivers/thermal/power_allocator.c @@ -144,6 +144,16 @@ static void estimate_pid_constants(struct thermal_zone_device *tz, switch_on_temp = 0; temperature_threshold = control_temp - switch_on_temp; + /* + * estimate_pid_constants() tries to find appropriate default + * values for thermal zones that don't provide them. If a + * system integrator has configured a thermal zone with two + * passive trip points at the same temperature, that person + * hasn't put any effort to set up the thermal zone properly + * so just give up. + */ + if (!temperature_threshold) + return; if (!tz->tzp->k_po || force) tz->tzp->k_po = int_to_frac(sustainable_power) / |