Commit 4a682922 authored Feb 09, 2012 by Mark Brown

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>

parent 43f674a3

drivers/regulator/core.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -805,6 +805,11 @@ static void print_constraints(struct regulator_dev *rdev)
		count += sprintf(buf + count, "standby");

		rdev_info(rdev, "%s\n", buf);

		if ((constraints->min_uV != constraints->max_uV) &&
		!(constraints->valid_ops_mask & REGULATOR_CHANGE_VOLTAGE))
		rdev_warn(rdev,
		"Voltage range but no REGULATOR_CHANGE_VOLTAGE\n");
		}

		static int machine_constraints_voltage(struct regulator_dev *rdev,