From: Ulf Hansson <ulf.hansson@xxxxxxxxxx>
[ Upstream commit 622d9b5577f19a6472db21df042fea8f5fefe244 ]
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@xxxxxxxxxx>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/base/power/domain.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c
index 7e8039d1884c..0f2e42f36851 100644
--- a/drivers/base/power/domain.c
+++ b/drivers/base/power/domain.c
@@ -1978,6 +1978,7 @@ 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();
--
2.35.1
