diff options
| author | Mark Brown <broonie@kernel.org> | 2015-11-03 05:58:14 +0000 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2015-11-04 10:16:05 +0000 |
| commit | d9b96d35d2521342fdbcbc7468a0f7dcfaba4147 (patch) | |
| tree | 43e895d5a496cc63f4ad04e2b9724068a6495004 /drivers/regulator/core.c | |
| parent | fc42112c0eaa6fc7c7fe61f8c6fb91b204b4d31d (diff) | |
| download | lwn-d9b96d35d2521342fdbcbc7468a0f7dcfaba4147.tar.gz lwn-d9b96d35d2521342fdbcbc7468a0f7dcfaba4147.zip | |
regulator: Use regulator_lock_supply() for get_voltage() too
Since we need to read voltages of parents as part of setting supply
voltages we need to be able to do get_voltage() internally without
taking locks so reorganize the locking to take locks on the full tree on
entry rather than as we recurse when called externally.
Reported-by: John Stultz <john.stultz@linaro.org>
Tested-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/regulator/core.c')
| -rw-r--r-- | drivers/regulator/core.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c index 771c6235cced..b4970eb85357 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -3055,7 +3055,7 @@ static int _regulator_get_voltage(struct regulator_dev *rdev) } else if (rdev->desc->fixed_uV && (rdev->desc->n_voltages == 1)) { ret = rdev->desc->fixed_uV; } else if (rdev->supply) { - ret = regulator_get_voltage(rdev->supply); + ret = _regulator_get_voltage(rdev->supply->rdev); } else { return -EINVAL; } @@ -3078,11 +3078,11 @@ int regulator_get_voltage(struct regulator *regulator) { int ret; - mutex_lock(®ulator->rdev->mutex); + regulator_lock_supply(regulator->rdev); ret = _regulator_get_voltage(regulator->rdev); - mutex_unlock(®ulator->rdev->mutex); + regulator_unlock_supply(regulator->rdev); return ret; } |