diff options
| author | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2009-03-16 19:36:33 +0000 |
|---|---|---|
| committer | Liam Girdwood <lrg@slimlogic.co.uk> | 2009-03-31 09:56:29 +0100 |
| commit | 50f075963f127d713ff0c30359baefc0f89d9ae2 (patch) | |
| tree | 71530114cd1b39cd54e6ba39626b7fde2acb6f0f /drivers | |
| parent | 52914eaa49bf732b091dbf5467ce4c7507c2d32a (diff) | |
regulator: Don't increment use_count for boot_on regulators
Don't set use_count for regulators that are enabled at boot since this
stops the supply being disabled by well-behaved consumers which do
balanced enables and disabled. Any consumers which don't do disables
which are not matched by enables are unable to share regulators - shared
regulators are the common case so the API should facilitate them.
Consumers that want to disable regulators that are enabled when they
start have two options:
- Do a regulator_enable() prior to the disable to bring the use count
in sync with the hardware state; this will ensure that if the
regulator was enabled by another driver then this consumer will play
nicely with it.
- Use regulator_force_disable(); this explicitly bypasses any checks
done by the core and documents the inability of the driver to share
the supply.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/regulator/core.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c index 944887578d6..8588a2490e0 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -814,7 +814,6 @@ static int set_machine_constraints(struct regulator_dev *rdev, rdev->constraints = NULL; goto out; } - rdev->use_count = 1; } print_constraints(rdev); |