Merge commit 'refs/changes/82/419382/1' of ssh://git-master:12001/linux-3.10 into promotion_build

Change-Id: I9418a05ad5c56b2e902249218bac2fa594d99f56

1 files changed, 19 insertions, 26 deletions

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index b48f84c8a63b..80d5ca6b84f2 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -1127,6 +1127,7 @@ 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
@@ -1202,10 +1203,9 @@ 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;
 		}
@@ -2029,6 +2029,8 @@ static int _regulator_disable(struct regulator_dev *rdev)
 				rdev_err(rdev, "failed to disable\n");
 				return ret;
 			}
+			_notifier_call_chain(rdev, REGULATOR_EVENT_DISABLE,
+					NULL);
 		}
 
 		rdev->use_count = 0;
@@ -2083,20 +2085,16 @@ static int _regulator_force_disable(struct regulator_dev *rdev)
 {
 	int ret = 0;
 
-	/* force disable */
-	if (rdev->desc->ops->disable) {
-		/* ah well, who wants to live forever... */
-		ret = rdev->desc->ops->disable(rdev);
-		if (ret < 0) {
-			rdev_err(rdev, "failed to force disable\n");
-			return ret;
-		}
-		/* notify other consumers that power has been forced off */
-		_notifier_call_chain(rdev, REGULATOR_EVENT_FORCE_DISABLE |
-			REGULATOR_EVENT_DISABLE, NULL);
+	ret = _regulator_do_disable(rdev);
+	if (ret < 0) {
+		rdev_err(rdev, "failed to force disable\n");
+		return ret;
 	}
 
-	return ret;
+	_notifier_call_chain(rdev, REGULATOR_EVENT_FORCE_DISABLE |
+			REGULATOR_EVENT_DISABLE, NULL);
+
+	return 0;
 }
 
 /**
@@ -4421,23 +4419,18 @@ int regulator_suspend_finish(void)
 
 	mutex_lock(&regulator_list_mutex);
 	list_for_each_entry(rdev, &regulator_list, list) {
-		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 {
 			if (!has_full_constraints)
 				goto unlock;
-			if (!ops->disable)
-				goto unlock;
 			if (!_regulator_is_enabled(rdev))
 				goto unlock;
 
-			error = ops->disable(rdev);
+			error = _regulator_do_disable(rdev);
 			if (error)
 				ret = error;
 		}
@@ -4620,7 +4613,7 @@ static int __init regulator_init_complete(void)
 		ops = rdev->desc->ops;
 		c = rdev->constraints;
 
-		if (!ops->disable || (c && c->always_on))
+		if (c && c->always_on)
 			continue;
 
 		mutex_lock(&rdev->mutex);
@@ -4641,7 +4634,7 @@ static int __init regulator_init_complete(void)
 			/* We log since this may kill the system if it
 			 * goes wrong. */
 			rdev_info(rdev, "disabling\n");
-			ret = ops->disable(rdev);
+			ret = _regulator_do_disable(rdev);
 			if (ret != 0) {
 				rdev_err(rdev, "couldn't disable: %d\n", ret);
 			}