diff mbox series

[10/14] PM: domains: Fix initialization of genpd's next_wakeup

Message ID 20220511145704.698189-11-ulf.hansson@linaro.org (mailing list archive)
State Mainlined, archived
Headers show
Series PM: domains: Various improvements for genpd | expand

Commit Message

Ulf Hansson May 11, 2022, 2:57 p.m. UTC 
In the genpd governor we walk the list of child-domains to take into
account their next_wakeup. If the child-domain itself, doesn't have a
governor assigned to it, we can end up using the next_wakeup value before
it has been properly initialized. To prevent a possible incorrect behaviour
in the governor, let's initialize next_wakeup to KTIME_MAX.

Fixes: c79aa080fb0f ("PM: domains: use device's next wakeup to determine domain idle state")
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
---
 drivers/base/power/domain.c | 1 +
 1 file changed, 1 insertion(+)
diff mbox series

Patch

diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c
index 48101232fcb9..9922fd763739 100644
--- a/drivers/base/power/domain.c
+++ b/drivers/base/power/domain.c
@@ -2007,6 +2007,7 @@  int pm_genpd_init(struct generic_pm_domain *genpd,
 	genpd->device_count = 0;
 	genpd->max_off_time_ns = -1;
 	genpd->max_off_time_changed = true;
+	genpd->next_wakeup = KTIME_MAX;
 	genpd->provider = NULL;
 	genpd->has_provider = false;
 	genpd->accounting_time = ktime_get_mono_fast_ns();