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Applied "regulator: core: Don't allow to get regulator until all couples resolved" to the regulator tree

The patch

   regulator: core: Don't allow to get regulator until all couples resolved

has been applied to the regulator tree at


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>From 79d6f049f4f05f5cb6e1647a9a253dad14bfabbe Mon Sep 17 00:00:00 2001
From: Dmitry Osipenko <digetx@xxxxxxxxx>
Date: Fri, 5 Oct 2018 18:36:31 +0300
Subject: [PATCH] regulator: core: Don't allow to get regulator until all
 couples resolved

Don't allow to get regulator until all of its couples resolved because
consumer will get EPERM and coupling shall be transparent for the drivers.

Signed-off-by: Dmitry Osipenko <digetx@xxxxxxxxx>
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
 drivers/regulator/core.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 925df9e6f1e3..089e8ad8ef57 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -1747,6 +1747,16 @@ struct regulator *_regulator_get(struct device *dev, const char *id,
 		return regulator;
+	mutex_lock(&regulator_list_mutex);
+	ret = (rdev->coupling_desc.n_resolved != rdev->coupling_desc.n_coupled);
+	mutex_unlock(&regulator_list_mutex);
+	if (ret != 0) {
+		regulator = ERR_PTR(-EPROBE_DEFER);
+		put_device(&rdev->dev);
+		return regulator;
+	}
 	ret = regulator_resolve_supply(rdev);
 	if (ret < 0) {
 		regulator = ERR_PTR(ret);