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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@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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drivers/regulator/core.c
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@ -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);