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Diffstat (limited to 'drivers/regulator')
-rw-r--r--drivers/regulator/core.c19
1 files changed, 16 insertions, 3 deletions
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index ae0a559d1978..f211aa7da44e 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -1399,11 +1399,21 @@ static int set_machine_constraints(struct regulator_dev *rdev,
* and we have control then make sure it is enabled.
*/
if (rdev->constraints->always_on || rdev->constraints->boot_on) {
+ if (rdev->supply) {
+ ret = regulator_enable(rdev->supply);
+ if (ret < 0) {
+ _regulator_put(rdev->supply);
+ rdev->supply = NULL;
+ return ret;
+ }
+ }
+
ret = _regulator_do_enable(rdev);
if (ret < 0 && ret != -EINVAL) {
rdev_err(rdev, "failed to enable\n");
return ret;
}
+ rdev->use_count++;
}
print_constraints(rdev);
@@ -1820,15 +1830,18 @@ static int regulator_resolve_supply(struct regulator_dev *rdev)
return ret;
}
- /* Cascade always-on state to supply */
- if (_regulator_is_enabled(rdev)) {
+ /*
+ * In set_machine_constraints() we may have turned this regulator on
+ * but we couldn't propagate to the supply if it hadn't been resolved
+ * yet. Do it now.
+ */
+ if (rdev->use_count) {
ret = regulator_enable(rdev->supply);
if (ret < 0) {
_regulator_put(rdev->supply);
rdev->supply = NULL;
return ret;
}
- rdev->use_count = 1;
}
return 0;