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| author |   Mark Brown <broonie@opensource.wolfsonmicro.com> | 2011-11-02 11:39:09 +0000 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2011-11-23 14:03:42 +0000 |
| commit | 4c78899b92335af0da11e104698e329bb50810b5 (patch) | |
| tree | 377f59b67fabaf229072f74daf8e3350cf2b5175 /drivers/regulator | |
| parent | regulator: Don't report zero volts for the fixed voltage regulator (diff) | |
| download | linux-dev-4c78899b92335af0da11e104698e329bb50810b5.tar.xz linux-dev-4c78899b92335af0da11e104698e329bb50810b5.zip | |
regulator: Don't create voltage sysfs entries if we can't read voltage
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'drivers/regulator')
| -rw-r--r-- | drivers/regulator/core.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c index 669d02160221..679f92ec9a45 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -2503,7 +2503,8 @@ static int add_regulator_attributes(struct regulator_dev *rdev) int status = 0; /* some attributes need specific methods to be displayed */ - if (ops->get_voltage || ops->get_voltage_sel) { + if ((ops->get_voltage && ops->get_voltage(rdev) >= 0) || + (ops->get_voltage_sel && ops->get_voltage_sel(rdev) >= 0)) { status = device_create_file(dev, &dev_attr_microvolts); if (status < 0) return status; |