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

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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@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Dmitry Osipenko 2018-10-05 18:36:31 +03:00 committed by Mark Brown
parent f9503385b1
commit 79d6f049f4
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1 changed files with 10 additions and 0 deletions
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10
drivers/regulator/core.c
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@ -1747,6 +1747,16 @@ struct regulator *_regulator_get(struct device *dev, const char *id,
return regulator; 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); ret = regulator_resolve_supply(rdev);
if (ret < 0) { if (ret < 0) {
regulator = ERR_PTR(ret); regulator = ERR_PTR(ret);