[PATCH v3 12/13] pmdomain: core: Avoid an unnecessary power off at sync_state

[Ulf Hansson <ulf.hansson@linaro.org>]

If the PM domain was not powered on during initialization, genpd will not
prevent it from being powered off during boot. In these cases there is no
need to call genpd_power_off() at sync_state, hence let's avoid it.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
---

Changes in v3:
	- New patch.

---
 drivers/pmdomain/core.c | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/drivers/pmdomain/core.c b/drivers/pmdomain/core.c
index b3ec3dec3f10..b5d90ddfd698 100644
--- a/drivers/pmdomain/core.c
+++ b/drivers/pmdomain/core.c
@@ -3636,8 +3636,10 @@ void of_genpd_sync_state(struct device_node *np)
 	list_for_each_entry(genpd, &gpd_list, gpd_list_node) {
 		if (genpd->provider == of_fwnode_handle(np)) {
 			genpd_lock(genpd);
-			genpd->stay_on = false;
-			genpd_power_off(genpd, false, 0);
+			if (genpd->stay_on) {
+				genpd->stay_on = false;
+				genpd_power_off(genpd, false, 0);
+			}
 			genpd_unlock(genpd);
 		}
 	}
@@ -3674,8 +3676,10 @@ static void genpd_provider_sync_state(struct device *dev)
 
 	case GENPD_SYNC_STATE_SIMPLE:
 		genpd_lock(genpd);
-		genpd->stay_on = false;
-		genpd_power_off(genpd, false, 0);
+		if (genpd->stay_on) {
+			genpd->stay_on = false;
+			genpd_power_off(genpd, false, 0);
+		}
 		genpd_unlock(genpd);
 		break;
 
-- 
2.43.0