UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

regulator: Don't disable unused regulators we don't have permission for 

In the spirit of conservatism that governs our general approach to
permissions it is better if we don't touch regulators we weren't explicitly
given permissions to control. This avoids the need to explicitly specify
unknown regulators in DT as always on, if a regulator is not otherwise
involved in software control it can be omitted from the DT.

Regulators explicitly given constraints in DT still need to have an always
on constraint specified as before.

Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Mark Brown 2014-06-01 19:15:16 +01:00
parent c9eaa447e7
commit e953583456
1 changed files with 6 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/regulator/core.c
View File

@ -3819,8 +3819,9 @@ static int __init regulator_init_complete(void)
mutex_lock(&regulator_list_mutex);
/* If we have a full configuration then disable any regulators
* which are not in use or always_on. This will become the
* default behaviour in the future.
* we have permission to change the status for and which are
* not in use or always_on. This is effectively the default
* for DT and ACPI as they have full constraints.
*/
list_for_each_entry(rdev, &regulator_list, list) {
ops = rdev->desc->ops;
@ -3829,6 +3830,9 @@ static int __init regulator_init_complete(void)
if (c && c->always_on)
continue;
if (c && !(c->valid_ops_mask & REGULATOR_CHANGE_STATUS))
continue;
mutex_lock(&rdev->mutex);
if (rdev->use_count)