[PATCH 1/2] regulator: core: freeze deferred disable work during suspend

[Jiale Yao]

regulator_disable_deferred() schedules hardware access after a
caller-provided delay. The power-efficient system workqueue remains
active during system suspend, so deferred regulator operations can reach
a bus after its controller has been suspended.

Use the freezable power-efficient workqueue to preserve the existing
power policy while deferring regulator access until devices have resumed.

Signed-off-by: Jiale Yao <yaojiale02@xxxxxxx>
---
 drivers/regulator/core.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 6a4008f387b5..317f02696e47 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -3465,7 +3465,8 @@ int regulator_disable_deferred(struct regulator *regulator, int ms)
 
 	regulator_lock(rdev);
 	regulator->deferred_disables++;
-	mod_delayed_work(system_power_efficient_wq, &rdev->disable_work,
+	mod_delayed_work(system_freezable_power_efficient_wq,
+			 &rdev->disable_work,
 			 msecs_to_jiffies(ms));
 	regulator_unlock(rdev);
 
-- 
2.34.1