diff options
| author | Markus Pargmann <mpa@pengutronix.de> | 2014-02-20 17:36:03 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-03-23 21:44:07 -0700 |
| commit | 7622f5047de6c1f4eb799cd5dc6726dc1f872dfa (patch) | |
| tree | 8a54703b43aecd46e10e49ee8e351d075d0dc30b | |
| parent | ac0b124ab251e33d17c7b8179e6966949e6ef570 (diff) | |
regulator: core: Replace direct ops->enable usage
commit 30c219710358c5cca2f8bd2e9e547c6aadf7cf8b upstream.
There are some direct ops->enable in the regulator core driver. This is
a potential issue as the function _regulator_do_enable() handles gpio
regulators and the normal ops->enable calls. These gpio regulators are
simply ignored when ops->enable is called directly.
One possible bug is that boot-on and always-on gpio regulators are not
enabled on registration.
This patch replaces all ops->enable calls by _regulator_do_enable.
[Handle missing enable operations -- broonie]
Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Signed-off-by: Mark Brown <broonie@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/regulator/core.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c index 0186c1bab49..af8ba6b7448 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -953,6 +953,8 @@ static int machine_constraints_current(struct regulator_dev *rdev, return 0; } +static int _regulator_do_enable(struct regulator_dev *rdev); + /** * set_machine_constraints - sets regulator constraints * @rdev: regulator source @@ -1013,10 +1015,9 @@ static int set_machine_constraints(struct regulator_dev *rdev, /* If the constraints say the regulator should be on at this point * and we have control then make sure it is enabled. */ - if ((rdev->constraints->always_on || rdev->constraints->boot_on) && - ops->enable) { - ret = ops->enable(rdev); - if (ret < 0) { + if (rdev->constraints->always_on || rdev->constraints->boot_on) { + ret = _regulator_do_enable(rdev); + if (ret < 0 && ret != -EINVAL) { rdev_err(rdev, "failed to enable\n"); goto out; } @@ -3633,9 +3634,8 @@ int regulator_suspend_finish(void) struct regulator_ops *ops = rdev->desc->ops; mutex_lock(&rdev->mutex); - if ((rdev->use_count > 0 || rdev->constraints->always_on) && - ops->enable) { - error = ops->enable(rdev); + if (rdev->use_count > 0 || rdev->constraints->always_on) { + error = _regulator_do_enable(rdev); if (error) ret = error; } else { |