regulator: Complain if a voltage range is specified but can't be used
It doesn't make much sense to specify a range of voltages consumers can use if they haven't been given permission to change the voltage. Log if this happens, probably the user forgot to specify CHANGE_VOLTAGE. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Liam Girdwood <lrg@ti.com>
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@ -805,6 +805,11 @@ static void print_constraints(struct regulator_dev *rdev)
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count += sprintf(buf + count, "standby");
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rdev_info(rdev, "%s\n", buf);
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if ((constraints->min_uV != constraints->max_uV) &&
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!(constraints->valid_ops_mask & REGULATOR_CHANGE_VOLTAGE))
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rdev_warn(rdev,
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"Voltage range but no REGULATOR_CHANGE_VOLTAGE\n");
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}
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static int machine_constraints_voltage(struct regulator_dev *rdev,
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