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SubjectApplied "regulator: Fix 'do-nothing' value for regulators without suspend state" to the regulator tree
The patch

regulator: Fix 'do-nothing' value for regulators without suspend state

has been applied to the regulator tree at

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From 3edd79cf5a44b12dbb13bc320f5788aed6562b36 Mon Sep 17 00:00:00 2001
From: Marek Szyprowski <>
Date: Mon, 3 Sep 2018 16:49:37 +0200
Subject: [PATCH] regulator: Fix 'do-nothing' value for regulators without
suspend state

Some regulators don't have all states defined and in such cases regulator
core should not assume anything. However in current implementation
of of_get_regulation_constraints() DO_NOTHING_IN_SUSPEND enable value was
set only for regulators which had suspend node defined, otherwise the
default 0 value was used, what means DISABLE_IN_SUSPEND. This lead to
broken system suspend/resume on boards, which had simple regulator
constraints definition (without suspend state nodes).

To avoid further mismatches between the default and uninitialized values
of the suspend enabled/disabled states, change the values of the them,
so default '0' means DO_NOTHING_IN_SUSPEND.

Fixes: 72069f9957a1: regulator: leave one item to record whether regulator is enabled
Signed-off-by: Marek Szyprowski <>
Signed-off-by: Mark Brown <>
drivers/regulator/core.c | 2 +-
drivers/regulator/of_regulator.c | 2 --
include/linux/regulator/machine.h | 6 +++---
3 files changed, 4 insertions(+), 6 deletions(-)

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index bb1324f93143..90215f57270f 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -3161,7 +3161,7 @@ static inline int regulator_suspend_toggle(struct regulator_dev *rdev,
if (!rstate->changeable)
return -EPERM;

- rstate->enabled = en;
+ rstate->enabled = (en) ? ENABLE_IN_SUSPEND : DISABLE_IN_SUSPEND;

return 0;
diff --git a/drivers/regulator/of_regulator.c b/drivers/regulator/of_regulator.c
index 638f17d4c848..210fc20f7de7 100644
--- a/drivers/regulator/of_regulator.c
+++ b/drivers/regulator/of_regulator.c
@@ -213,8 +213,6 @@ static void of_get_regulation_constraints(struct device_node *np,
else if (of_property_read_bool(suspend_np,
suspend_state->enabled = DISABLE_IN_SUSPEND;
- else
- suspend_state->enabled = DO_NOTHING_IN_SUSPEND;

if (!of_property_read_u32(np, "regulator-suspend-min-microvolt",
diff --git a/include/linux/regulator/machine.h b/include/linux/regulator/machine.h
index 3468703d663a..a459a5e973a7 100644
--- a/include/linux/regulator/machine.h
+++ b/include/linux/regulator/machine.h
@@ -48,9 +48,9 @@ struct regulator;
* DISABLE_IN_SUSPEND - turn off regulator in suspend states
* ENABLE_IN_SUSPEND - keep regulator on in suspend states

/* Regulator active discharge flags */
enum regulator_active_discharge {
 \ /
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