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Commit be1a50d4 authored by Jean Delvare's avatar Jean Delvare Committed by Liam Girdwood
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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: default avatarJean Delvare <khali@linux-fr.org>
Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: Jerome Oufella <jerome.oufella@savoirfairelinux.com>
Acked-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: default avatarLiam Girdwood <lrg@slimlogic.co.uk>
parent 13bd8e46

include/linux/regulator/consumer.h

+6 −2
Original line number Diff line number Diff line
@@ -183,9 +183,13 @@ static inline struct regulator *__must_check regulator_get(struct device *dev, 
{

	/* Nothing except the stubbed out regulator API should be

	 * looking at the value except to check if it is an error

	 * value so the actual return value doesn't matter.

	 * value. Drivers are free to handle NULL specifically by

	 * skipping all regulator API calls, but they don't have to.

	 * Drivers which don't, should make sure they properly handle

	 * corner cases of the API, such as regulator_get_voltage()

	 * returning 0.

	 */

	return (struct regulator *)id;

	return NULL;

}

static inline void regulator_put(struct regulator *regulator)

{