regulator: Let drivers know when they use the stub API
Have the stub variant of regulator_get() return NULL, so that drivers can (but still don't have to) handle this case specifically. Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Mark Brown <broonie@opensource.wolfsonmicro.com> Cc: Jerome Oufella <jerome.oufella@savoirfairelinux.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
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@ -183,9 +183,13 @@ static inline struct regulator *__must_check regulator_get(struct device *dev,
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{
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/* Nothing except the stubbed out regulator API should be
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* looking at the value except to check if it is an error
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* value so the actual return value doesn't matter.
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* value. Drivers are free to handle NULL specifically by
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* skipping all regulator API calls, but they don't have to.
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* Drivers which don't, should make sure they properly handle
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* corner cases of the API, such as regulator_get_voltage()
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* returning 0.
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*/
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return (struct regulator *)id;
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return NULL;
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}
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static inline void regulator_put(struct regulator *regulator)
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{
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