From 79d6f049f4f05f5cb6e1647a9a253dad14bfabbe Mon Sep 17 00:00:00 2001 From: Dmitry Osipenko 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 Signed-off-by: Mark Brown --- drivers/regulator/core.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c index 925df9e..089e8ad 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(®ulator_list_mutex); + ret = (rdev->coupling_desc.n_resolved != rdev->coupling_desc.n_coupled); + mutex_unlock(®ulator_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); -- 2.7.4