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thermal: trip: Simplify computing trip indices

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A trip index can be computed right away as a difference between the
value of a trip pointer pointing to the given trip object and the
start of the trips[] table in the given thermal zone, so change
thermal_zone_trip_id() accordingly.

No intentional functional impact (except for some speedup).

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
Tested-by: Lukasz Luba <lukasz.luba@arm.com>
This commit is contained in:
Rafael J. Wysocki 2023-10-12 20:25:06 +02:00
parent a26b452e83
commit 78869767f2
1 changed files with 5 additions and 8 deletions
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13
drivers/thermal/thermal_trip.c
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@ -173,12 +173,9 @@ int thermal_zone_set_trip(struct thermal_zone_device *tz, int trip_id,
int thermal_zone_trip_id(struct thermal_zone_device *tz,
const struct thermal_trip *trip)
{
int i;
for (i = 0; i < tz->num_trips; i++) {
if (&tz->trips[i] == trip)
return i;
}
return -ENODATA;
/*
* Assume the trip to be located within the bounds of the thermal
* zone's trips[] table.
*/
return trip - tz->trips;
}