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pm: device_runtime: Avoid unnecessary work

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Similar to what is done in pm_device_runtime_get,
we don't need to wait the device be suspended if
the work is still in the work queue. In this case
we just cancel the work and update the device state
to active.

Signed-off-by: Flavio Ceolin <flavio.ceolin@intel.com>
This commit is contained in:
Flavio Ceolin 2023-12-12 22:05:09 -08:00 committed by Fabio Baltieri
parent dca352bfa3
commit b16110587c
1 changed files with 8 additions and 1 deletions
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9
subsys/pm/device_runtime.c
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@ -347,8 +347,14 @@ int pm_device_runtime_disable(const struct device *dev)
goto unlock;
}
/* wait until possible async suspend is completed */
if (!k_is_pre_kernel()) {
if ((pm->state == PM_DEVICE_STATE_SUSPENDING) &&
((k_work_cancel_delayable(&pm->work) & K_WORK_RUNNING) == 0)) {
pm->state = PM_DEVICE_STATE_ACTIVE;
goto clear_bit;
}
/* wait until possible async suspend is completed */
while (pm->state == PM_DEVICE_STATE_SUSPENDING) {
k_sem_give(&pm->lock);
@ -368,6 +374,7 @@ int pm_device_runtime_disable(const struct device *dev)
pm->state = PM_DEVICE_STATE_ACTIVE;
}
clear_bit:
atomic_clear_bit(&pm->flags, PM_DEVICE_FLAG_RUNTIME_ENABLED);
unlock: