regulator: core: Replace direct ops->disable usage

There are many places where ops->disable is called directly. Instead we
should use _regulator_do_disable() which also handles gpio regulators.

To be able to use the wrapper function from _regulator_force_disable(),
I moved the _notifier_call_chain() call from _regulator_do_disable() to
_regulator_disable(). This way, _regulator_force_disable() can use
different flags for _notifier_call_chain() without calling it twice.

Cc: <stable@vger.kernel.org> # 3.10+
Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Signed-off-by: Mark Brown <broonie@linaro.org>

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 00feec321e3c68b212d23702edbbe328b3820c3c..6f7198516fef7791204e6d38798fe96e693218bd 100644 (file)
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -1901,8 +1901,6 @@ static int _regulator_do_disable(struct regulator_dev *rdev)
 
        trace_regulator_disable_complete(rdev_get_name(rdev));
 
-       _notifier_call_chain(rdev, REGULATOR_EVENT_DISABLE,
-                            NULL);
        return 0;
 }
 
@@ -1926,6 +1924,8 @@ 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;
@@ -1978,20 +1978,16 @@ 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;
 }
 
 /**
@@ -3624,8 +3620,6 @@ 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) {
                        error = _regulator_do_enable(rdev);
@@ -3634,12 +3628,10 @@ int regulator_suspend_finish(void)
                } else {
                        if (!have_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;
                }
@@ -3813,7 +3805,7 @@ 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);
@@ -3834,7 +3826,7 @@ 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);
                } else {