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| author |   Ulf Hansson <ulf.hansson@linaro.org> | 2022-05-11 16:57:00 +0200 |
|---|---|---|
| committer |   Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2022-05-19 20:16:05 +0200 |
| commit | 622d9b5577f19a6472db21df042fea8f5fefe244 (patch) | |
| tree | d1c6d5abbe876b28c5d7ce7c6b92796afb9a3bf4 /drivers/base/power/domain.c | |
| parent | PM: domains: Fixup QoS latency measurements for IRQ safe devices in genpd (diff) | |
| download | linux-dev-622d9b5577f19a6472db21df042fea8f5fefe244.tar.xz linux-dev-622d9b5577f19a6472db21df042fea8f5fefe244.zip | |
PM: domains: Fix initialization of genpd's next_wakeup
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>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/base/power/domain.c')
| -rw-r--r-- | drivers/base/power/domain.c | 1 |
1 files changed, 1 insertions, 0 deletions
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(); |