diff options
| author | Steve Twiss | 2019-03-18 16:17:57 +0000 |
|---|---|---|
| committer | Mark Brown | 2019-03-19 13:02:45 +0000 |
| commit | 70b464918e5331e488058870fcc6821d54c4e541 (patch) | |
| tree | 5daff430c2e5c730438a5b71de87fddd8f1b64cf /drivers/regulator | |
| parent | e5680c4de3eb3ea5538d11733a91ccef19badd69 (diff) | |
regulator: core: fix error path for regulator_set_voltage_unlocked
During several error paths in the function
regulator_set_voltage_unlocked() the value of 'ret' can take on negative
error values. However, in calls that go through the 'goto out' statement,
this return value is lost and return 0 is used instead, indicating a
'pass'.
There are several cases where this function should legitimately return a
fail instead of a pass: one such case includes constraints check during
voltage selection in the call to regulator_check_voltage(), which can
have -EINVAL for the case when an unsupported voltage is incorrectly
requested. In that case, -22 is expected as the return value, not 0.
Fixes: 9243a195be7a ("regulator: core: Change voltage setting path")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Steve Twiss <stwiss.opensource@diasemi.com>
Reviewed-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/regulator')
| -rw-r--r-- | drivers/regulator/core.c | 11 |
1 files changed, 4 insertions, 7 deletions
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c index 68473d0cc57e..968dcd9d7a07 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -3322,15 +3322,12 @@ static int regulator_set_voltage_unlocked(struct regulator *regulator, /* for not coupled regulators this will just set the voltage */ ret = regulator_balance_voltage(rdev, state); - if (ret < 0) - goto out2; + if (ret < 0) { + voltage->min_uV = old_min_uV; + voltage->max_uV = old_max_uV; + } out: - return 0; -out2: - voltage->min_uV = old_min_uV; - voltage->max_uV = old_max_uV; - return ret; } |