linux-kernel - [PATCH] pmdomain: core: fix "sd

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Message-ID: <20241024094930.3221729-1-dario.binacchi@amarulasolutions.com>
Date: Thu, 24 Oct 2024 11:49:18 +0200
From: Dario Binacchi <dario.binacchi@...rulasolutions.com>
To: linux-kernel@...r.kernel.org
Cc: linux-amarula@...rulasolutions.com,
	Dario Binacchi <dario.binacchi@...rulasolutions.com>,
	Michael Trimarchi <michael@...rulasolutions.com>,
	Ulf Hansson <ulf.hansson@...aro.org>,
	linux-pm@...r.kernel.org
Subject: [PATCH] pmdomain: core: fix "sd_count" field setting

The "sd_count" field keeps track of the number of subdomains with power
"on," so if pm_genpd_init() is called with the "is_off" parameter set to
false, it means that the power domain is already on, and therefore its
"sd_count" must be 1.

Co-developed-by: Michael Trimarchi <michael@...rulasolutions.com>
Signed-off-by: Michael Trimarchi <michael@...rulasolutions.com>
Signed-off-by: Dario Binacchi <dario.binacchi@...rulasolutions.com>

---

 drivers/pmdomain/core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pmdomain/core.c b/drivers/pmdomain/core.c
index 5ede0f7eda09..2df6dda98021 100644
--- a/drivers/pmdomain/core.c
+++ b/drivers/pmdomain/core.c
@@ -2221,7 +2221,7 @@ int pm_genpd_init(struct generic_pm_domain *genpd,
 	genpd_lock_init(genpd);
 	genpd->gov = gov;
 	INIT_WORK(&genpd->power_off_work, genpd_power_off_work_fn);
-	atomic_set(&genpd->sd_count, 0);
+	atomic_set(&genpd->sd_count, is_off ? 0 : 1);
 	genpd->status = is_off ? GENPD_STATE_OFF : GENPD_STATE_ON;
 	genpd->device_count = 0;
 	genpd->provider = NULL;
-- 
2.43.0