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| author | Axel Lin <axel.lin@gmail.com> | 2011-05-23 20:08:10 +0800 |
|---|---|---|
| committer | Liam Girdwood <lrg@slimlogic.co.uk> | 2011-05-27 10:49:30 +0100 |
| commit | cb220d16f91f8d5fa1450c7af17e028e8cb3f0f1 (patch) | |
| tree | 98af3e7e811980be3608c1c4b7506fb73d74d21c /drivers/regulator | |
| parent | 5ccee4ae8eab957ab6d534283db5bd27703dba03 (diff) | |
| download | lwn-cb220d16f91f8d5fa1450c7af17e028e8cb3f0f1.tar.gz lwn-cb220d16f91f8d5fa1450c7af17e028e8cb3f0f1.zip | |
regulator: Fix _regulator_get_voltage if get_voltage callback is NULL
In the case of get_voltage callback is NULL, current implementation in
_regulator_get_voltage will return -EINVAL.
Also returns proper error if ret is negative value.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
Diffstat (limited to 'drivers/regulator')
| -rw-r--r-- | drivers/regulator/core.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c index 9493f6111a38..d3e38790906e 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -1886,12 +1886,14 @@ static int _regulator_get_voltage(struct regulator_dev *rdev) if (sel < 0) return sel; ret = rdev->desc->ops->list_voltage(rdev, sel); - } - if (rdev->desc->ops->get_voltage) + } else if (rdev->desc->ops->get_voltage) { ret = rdev->desc->ops->get_voltage(rdev); - else + } else { return -EINVAL; + } + if (ret < 0) + return ret; return ret - rdev->constraints->uV_offset; } |