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Date: Wed, 11 May 2022 16:57:00 +0200 From: Ulf Hansson <ulf.hansson@...aro.org> To: "Rafael J . Wysocki" <rafael@...nel.org>, linux-pm@...r.kernel.org Cc: "Rafael J . Wysocki" <rjw@...ysocki.net>, Geert Uytterhoeven <geert+renesas@...der.be>, Maulik Shah <quic_mkshah@...cinc.com>, Gabriel Fernandez <gabriel.fernandez@...s.st.com>, Alexandre Torgue <alexandre.torgue@...s.st.com>, Dmitry Osipenko <digetx@...il.com>, Kevin Hilman <khilman@...nel.org>, Ulf Hansson <ulf.hansson@...aro.org>, linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org Subject: [PATCH 10/14] 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@...aro.org> --- 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 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(); -- 2.25.1
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