Commit 97584d18 authored by Javi Merino's avatar Javi Merino Committed by Zhang Rui

thermal: power_allocator: exit early if there are no cooling devices

Don't waste cycles in the power allocator governor's throttle function
if there are no cooling devices and exit early.

This commit doesn't change any functionality, but should provide better
performance for the odd case of a thermal zone with trip points but
without cooling devices.

Cc: Zhang Rui <rui.zhang@intel.com>
Cc: Eduardo Valentin <edubezval@gmail.com>
Reviewed-by: default avatarDaniel Kurtz <djkurtz@chromium.org>
Signed-off-by: default avatarJavi Merino <javi.merino@arm.com>
Signed-off-by: default avatarEduardo Valentin <edubezval@gmail.com>
parent f5cbb182
...@@ -346,6 +346,11 @@ static int allocate_power(struct thermal_zone_device *tz, ...@@ -346,6 +346,11 @@ static int allocate_power(struct thermal_zone_device *tz,
} }
} }
if (!num_actors) {
ret = -ENODEV;
goto unlock;
}
/* /*
* We need to allocate five arrays of the same size: * We need to allocate five arrays of the same size:
* req_power, max_power, granted_power, extra_actor_power and * req_power, max_power, granted_power, extra_actor_power and
......
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