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| author | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2012-02-09 17:26:13 +0400 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2012-02-09 20:22:18 +0400 |
| commit | 4a682922817fde4d82fed4303dc902c29d7b2e4e (patch) | |
| tree | e6d67dbf05d7231af5dcaec74c341fa08d82c8b8 /drivers/regulator | |
| parent | 43f674a322aa8a3404df5785f84dc1351a5d84b6 (diff) | |
| download | linux-4a682922817fde4d82fed4303dc902c29d7b2e4e.tar.xz | |
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>
Diffstat (limited to 'drivers/regulator')
| -rw-r--r-- | drivers/regulator/core.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c index e3271daa3ab9..9a143aebb84b 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -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, |