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| author | David Brownell <dbrownell@users.sourceforge.net> | 2008-11-16 11:46:56 -0800 |
|---|---|---|
| committer | Liam Girdwood <lrg@slimlogic.co.uk> | 2009-01-08 20:10:30 +0000 |
| commit | e573520b171095c106ffbbbf4f9cbed6d9bff576 (patch) | |
| tree | ab0d3b0e4adadcf6fc68915f7703048b4aea2a76 /drivers/regulator/core.c | |
| parent | 412aec610559bdb602a0a21ce149ba8ffbb6f983 (diff) | |
| download | linux-e573520b171095c106ffbbbf4f9cbed6d9bff576.tar.gz linux-e573520b171095c106ffbbbf4f9cbed6d9bff576.tar.bz2 linux-e573520b171095c106ffbbbf4f9cbed6d9bff576.zip | |
regulator: improved mode error checks
Minor bugfixes in handling of regulator modes:
- have the routine verifying regulator modes check against
the set of legal modes (!);
- have regulator_set_optimum_mode() verify the return value
of regulator_ops.get_optimum_mode(), like drms_uA_update();
- one call to regulator_ops.set_mode() treated zero as a
failure code; make this consistent with other callers.
Both regulator_set_mode() and regulator_set_optimum_mode() now
require valid_ops_mask to include REGULATOR_CHANGE_MODE; that
seems like a bugfix too.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
Diffstat (limited to 'drivers/regulator/core.c')
| -rw-r--r-- | drivers/regulator/core.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c index c2b7ec901036..686dfa990726 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -174,6 +174,16 @@ static int regulator_check_current_limit(struct regulator_dev *rdev, /* operating mode constraint check */ static int regulator_check_mode(struct regulator_dev *rdev, int mode) { + switch (mode) { + case REGULATOR_MODE_FAST: + case REGULATOR_MODE_NORMAL: + case REGULATOR_MODE_IDLE: + case REGULATOR_MODE_STANDBY: + break; + default: + return -EINVAL; + } + if (!rdev->constraints) { printk(KERN_ERR "%s: no constraints for %s\n", __func__, rdev->desc->name); @@ -1494,7 +1504,8 @@ int regulator_set_optimum_mode(struct regulator *regulator, int uA_load) mode = rdev->desc->ops->get_optimum_mode(rdev, input_uV, output_uV, total_uA_load); - if (ret <= 0) { + ret = regulator_check_mode(rdev, mode); + if (ret < 0) { printk(KERN_ERR "%s: failed to get optimum mode for %s @" " %d uA %d -> %d uV\n", __func__, rdev->desc->name, total_uA_load, input_uV, output_uV); @@ -1502,7 +1513,7 @@ int regulator_set_optimum_mode(struct regulator *regulator, int uA_load) } ret = rdev->desc->ops->set_mode(rdev, mode); - if (ret <= 0) { + if (ret < 0) { printk(KERN_ERR "%s: failed to set optimum mode %x for %s\n", __func__, mode, rdev->desc->name); goto out; |