Merge tag 'asoc-v3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-next

ASoC: Updates for v3.13

 - Further work on the dmaengine helpers, including support for
   configuring the parameters for DMA by reading the capabilities of the
   DMA controller which removes some guesswork and magic numbers fromm
   drivers.
 - A refresh of the documentation.
 - Conversions of many drivers to direct regmap API usage in order to
   allow the ASoC level register I/O code to be removed, this will
   hopefully be completed by v3.14.
 - Support for using async register I/O in DAPM, reducing the time taken
   to implement power transitions on systems that support it.

1 files changed, 4 insertions, 100 deletions

diff --git a/drivers/acpi/power.c b/drivers/acpi/power.c
index 0dbe5cdf3396..c2ad391d8041 100644
--- a/drivers/acpi/power.c
+++ b/drivers/acpi/power.c
@@ -59,16 +59,9 @@ ACPI_MODULE_NAME("power");
 #define ACPI_POWER_RESOURCE_STATE_ON	0x01
 #define ACPI_POWER_RESOURCE_STATE_UNKNOWN 0xFF
 
-struct acpi_power_dependent_device {
-	struct list_head node;
-	struct acpi_device *adev;
-	struct work_struct work;
-};
-
 struct acpi_power_resource {
 	struct acpi_device device;
 	struct list_head list_node;
-	struct list_head dependent;
 	char *name;
 	u32 system_level;
 	u32 order;
@@ -233,32 +226,6 @@ static int acpi_power_get_list_state(struct list_head *list, int *state)
 	return 0;
 }
 
-static void acpi_power_resume_dependent(struct work_struct *work)
-{
-	struct acpi_power_dependent_device *dep;
-	struct acpi_device_physical_node *pn;
-	struct acpi_device *adev;
-	int state;
-
-	dep = container_of(work, struct acpi_power_dependent_device, work);
-	adev = dep->adev;
-	if (acpi_power_get_inferred_state(adev, &state))
-		return;
-
-	if (state > ACPI_STATE_D0)
-		return;
-
-	mutex_lock(&adev->physical_node_lock);
-
-	list_for_each_entry(pn, &adev->physical_node_list, node)
-		pm_request_resume(pn->dev);
-
-	list_for_each_entry(pn, &adev->power_dependent, node)
-		pm_request_resume(pn->dev);
-
-	mutex_unlock(&adev->physical_node_lock);
-}
-
 static int __acpi_power_on(struct acpi_power_resource *resource)
 {
 	acpi_status status = AE_OK;
@@ -283,14 +250,8 @@ static int acpi_power_on_unlocked(struct acpi_power_resource *resource)
 				  resource->name));
 	} else {
 		result = __acpi_power_on(resource);
-		if (result) {
+		if (result)
 			resource->ref_count--;
-		} else {
-			struct acpi_power_dependent_device *dep;
-
-			list_for_each_entry(dep, &resource->dependent, node)
-				schedule_work(&dep->work);
-		}
 	}
 	return result;
 }
@@ -390,52 +351,6 @@ static int acpi_power_on_list(struct list_head *list)
 	return result;
 }
 
-static void acpi_power_add_dependent(struct acpi_power_resource *resource,
-				     struct acpi_device *adev)
-{
-	struct acpi_power_dependent_device *dep;
-
-	mutex_lock(&resource->resource_lock);
-
-	list_for_each_entry(dep, &resource->dependent, node)
-		if (dep->adev == adev)
-			goto out;
-
-	dep = kzalloc(sizeof(*dep), GFP_KERNEL);
-	if (!dep)
-		goto out;
-
-	dep->adev = adev;
-	INIT_WORK(&dep->work, acpi_power_resume_dependent);
-	list_add_tail(&dep->node, &resource->dependent);
-
- out:
-	mutex_unlock(&resource->resource_lock);
-}
-
-static void acpi_power_remove_dependent(struct acpi_power_resource *resource,
-					struct acpi_device *adev)
-{
-	struct acpi_power_dependent_device *dep;
-	struct work_struct *work = NULL;
-
-	mutex_lock(&resource->resource_lock);
-
-	list_for_each_entry(dep, &resource->dependent, node)
-		if (dep->adev == adev) {
-			list_del(&dep->node);
-			work = &dep->work;
-			break;
-		}
-
-	mutex_unlock(&resource->resource_lock);
-
-	if (work) {
-		cancel_work_sync(work);
-		kfree(dep);
-	}
-}
-
 static struct attribute *attrs[] = {
 	NULL,
 };
@@ -524,8 +439,6 @@ static void acpi_power_expose_hide(struct acpi_device *adev,
 
 void acpi_power_add_remove_device(struct acpi_device *adev, bool add)
 {
-	struct acpi_device_power_state *ps;
-	struct acpi_power_resource_entry *entry;
 	int state;
 
 	if (adev->wakeup.flags.valid)
@@ -535,16 +448,6 @@ void acpi_power_add_remove_device(struct acpi_device *adev, bool add)
 	if (!adev->power.flags.power_resources)
 		return;
 
-	ps = &adev->power.states[ACPI_STATE_D0];
-	list_for_each_entry(entry, &ps->resources, node) {
-		struct acpi_power_resource *resource = entry->resource;
-
-		if (add)
-			acpi_power_add_dependent(resource, adev);
-		else
-			acpi_power_remove_dependent(resource, adev);
-	}
-
 	for (state = ACPI_STATE_D0; state <= ACPI_STATE_D3_HOT; state++)
 		acpi_power_expose_hide(adev,
 				       &adev->power.states[state].resources,
@@ -882,7 +785,6 @@ int acpi_add_power_resource(acpi_handle handle)
 	acpi_init_device_object(device, handle, ACPI_BUS_TYPE_POWER,
 				ACPI_STA_DEFAULT);
 	mutex_init(&resource->resource_lock);
-	INIT_LIST_HEAD(&resource->dependent);
 	INIT_LIST_HEAD(&resource->list_node);
 	resource->name = device->pnp.bus_id;
 	strcpy(acpi_device_name(device), ACPI_POWER_DEVICE_NAME);
@@ -936,8 +838,10 @@ void acpi_resume_power_resources(void)
 		mutex_lock(&resource->resource_lock);
 
 		result = acpi_power_get_state(resource->device.handle, &state);
-		if (result)
+		if (result) {
+			mutex_unlock(&resource->resource_lock);
 			continue;
+		}
 
 		if (state == ACPI_POWER_RESOURCE_STATE_OFF
 		    && resource->ref_count) {