1 files changed, 23 insertions, 510 deletions

diff --git a/drivers/of/platform.c b/drivers/of/platform.c
index c01cd1ac7617..63d3cb73bdb9 100644
--- a/drivers/of/platform.c
+++ b/drivers/of/platform.c
@@ -42,471 +42,10 @@ struct platform_device *of_find_device_by_node(struct device_node *np)
 }
 EXPORT_SYMBOL(of_find_device_by_node);
 
-static int platform_driver_probe_shim(struct platform_device *pdev)
-{
-	struct platform_driver *pdrv;
-	struct of_platform_driver *ofpdrv;
-	const struct of_device_id *match;
-
-	pdrv = container_of(pdev->dev.driver, struct platform_driver, driver);
-	ofpdrv = container_of(pdrv, struct of_platform_driver, platform_driver);
-
-	/* There is an unlikely chance that an of_platform driver might match
-	 * on a non-OF platform device.  If so, then of_match_device() will
-	 * come up empty.  Return -EINVAL in this case so other drivers get
-	 * the chance to bind. */
-	match = of_match_device(pdev->dev.driver->of_match_table, &pdev->dev);
-	return match ? ofpdrv->probe(pdev, match) : -EINVAL;
-}
-
-static void platform_driver_shutdown_shim(struct platform_device *pdev)
-{
-	struct platform_driver *pdrv;
-	struct of_platform_driver *ofpdrv;
-
-	pdrv = container_of(pdev->dev.driver, struct platform_driver, driver);
-	ofpdrv = container_of(pdrv, struct of_platform_driver, platform_driver);
-	ofpdrv->shutdown(pdev);
-}
-
-/**
- * of_register_platform_driver
- */
-int of_register_platform_driver(struct of_platform_driver *drv)
-{
-	char *of_name;
-
-	/* setup of_platform_driver to platform_driver adaptors */
-	drv->platform_driver.driver = drv->driver;
-
-	/* Prefix the driver name with 'of:' to avoid namespace collisions
-	 * and bogus matches.  There are some drivers in the tree that
-	 * register both an of_platform_driver and a platform_driver with
-	 * the same name.  This is a temporary measure until they are all
-	 * cleaned up --gcl July 29, 2010 */
-	of_name = kmalloc(strlen(drv->driver.name) + 5, GFP_KERNEL);
-	if (!of_name)
-		return -ENOMEM;
-	sprintf(of_name, "of:%s", drv->driver.name);
-	drv->platform_driver.driver.name = of_name;
-
-	if (drv->probe)
-		drv->platform_driver.probe = platform_driver_probe_shim;
-	drv->platform_driver.remove = drv->remove;
-	if (drv->shutdown)
-		drv->platform_driver.shutdown = platform_driver_shutdown_shim;
-	drv->platform_driver.suspend = drv->suspend;
-	drv->platform_driver.resume = drv->resume;
-
-	return platform_driver_register(&drv->platform_driver);
-}
-EXPORT_SYMBOL(of_register_platform_driver);
-
-void of_unregister_platform_driver(struct of_platform_driver *drv)
-{
-	platform_driver_unregister(&drv->platform_driver);
-	kfree(drv->platform_driver.driver.name);
-	drv->platform_driver.driver.name = NULL;
-}
-EXPORT_SYMBOL(of_unregister_platform_driver);
-
 #if defined(CONFIG_PPC_DCR)
 #include <asm/dcr.h>
 #endif
 
-extern struct device_attribute of_platform_device_attrs[];
-
-static int of_platform_bus_match(struct device *dev, struct device_driver *drv)
-{
-	const struct of_device_id *matches = drv->of_match_table;
-
-	if (!matches)
-		return 0;
-
-	return of_match_device(matches, dev) != NULL;
-}
-
-static int of_platform_device_probe(struct device *dev)
-{
-	int error = -ENODEV;
-	struct of_platform_driver *drv;
-	struct platform_device *of_dev;
-	const struct of_device_id *match;
-
-	drv = to_of_platform_driver(dev->driver);
-	of_dev = to_platform_device(dev);
-
-	if (!drv->probe)
-		return error;
-
-	of_dev_get(of_dev);
-
-	match = of_match_device(drv->driver.of_match_table, dev);
-	if (match)
-		error = drv->probe(of_dev, match);
-	if (error)
-		of_dev_put(of_dev);
-
-	return error;
-}
-
-static int of_platform_device_remove(struct device *dev)
-{
-	struct platform_device *of_dev = to_platform_device(dev);
-	struct of_platform_driver *drv = to_of_platform_driver(dev->driver);
-
-	if (dev->driver && drv->remove)
-		drv->remove(of_dev);
-	return 0;
-}
-
-static void of_platform_device_shutdown(struct device *dev)
-{
-	struct platform_device *of_dev = to_platform_device(dev);
-	struct of_platform_driver *drv = to_of_platform_driver(dev->driver);
-
-	if (dev->driver && drv->shutdown)
-		drv->shutdown(of_dev);
-}
-
-#ifdef CONFIG_PM_SLEEP
-
-static int of_platform_legacy_suspend(struct device *dev, pm_message_t mesg)
-{
-	struct platform_device *of_dev = to_platform_device(dev);
-	struct of_platform_driver *drv = to_of_platform_driver(dev->driver);
-	int ret = 0;
-
-	if (dev->driver && drv->suspend)
-		ret = drv->suspend(of_dev, mesg);
-	return ret;
-}
-
-static int of_platform_legacy_resume(struct device *dev)
-{
-	struct platform_device *of_dev = to_platform_device(dev);
-	struct of_platform_driver *drv = to_of_platform_driver(dev->driver);
-	int ret = 0;
-
-	if (dev->driver && drv->resume)
-		ret = drv->resume(of_dev);
-	return ret;
-}
-
-static int of_platform_pm_prepare(struct device *dev)
-{
-	struct device_driver *drv = dev->driver;
-	int ret = 0;
-
-	if (drv && drv->pm && drv->pm->prepare)
-		ret = drv->pm->prepare(dev);
-
-	return ret;
-}
-
-static void of_platform_pm_complete(struct device *dev)
-{
-	struct device_driver *drv = dev->driver;
-
-	if (drv && drv->pm && drv->pm->complete)
-		drv->pm->complete(dev);
-}
-
-#ifdef CONFIG_SUSPEND
-
-static int of_platform_pm_suspend(struct device *dev)
-{
-	struct device_driver *drv = dev->driver;
-	int ret = 0;
-
-	if (!drv)
-		return 0;
-
-	if (drv->pm) {
-		if (drv->pm->suspend)
-			ret = drv->pm->suspend(dev);
-	} else {
-		ret = of_platform_legacy_suspend(dev, PMSG_SUSPEND);
-	}
-
-	return ret;
-}
-
-static int of_platform_pm_suspend_noirq(struct device *dev)
-{
-	struct device_driver *drv = dev->driver;
-	int ret = 0;
-
-	if (!drv)
-		return 0;
-
-	if (drv->pm) {
-		if (drv->pm->suspend_noirq)
-			ret = drv->pm->suspend_noirq(dev);
-	}
-
-	return ret;
-}
-
-static int of_platform_pm_resume(struct device *dev)
-{
-	struct device_driver *drv = dev->driver;
-	int ret = 0;
-
-	if (!drv)
-		return 0;
-
-	if (drv->pm) {
-		if (drv->pm->resume)
-			ret = drv->pm->resume(dev);
-	} else {
-		ret = of_platform_legacy_resume(dev);
-	}
-
-	return ret;
-}
-
-static int of_platform_pm_resume_noirq(struct device *dev)
-{
-	struct device_driver *drv = dev->driver;
-	int ret = 0;
-
-	if (!drv)
-		return 0;
-
-	if (drv->pm) {
-		if (drv->pm->resume_noirq)
-			ret = drv->pm->resume_noirq(dev);
-	}
-
-	return ret;
-}
-
-#else /* !CONFIG_SUSPEND */
-
-#define of_platform_pm_suspend		NULL
-#define of_platform_pm_resume		NULL
-#define of_platform_pm_suspend_noirq	NULL
-#define of_platform_pm_resume_noirq	NULL
-
-#endif /* !CONFIG_SUSPEND */
-
-#ifdef CONFIG_HIBERNATION
-
-static int of_platform_pm_freeze(struct device *dev)
-{
-	struct device_driver *drv = dev->driver;
-	int ret = 0;
-
-	if (!drv)
-		return 0;
-
-	if (drv->pm) {
-		if (drv->pm->freeze)
-			ret = drv->pm->freeze(dev);
-	} else {
-		ret = of_platform_legacy_suspend(dev, PMSG_FREEZE);
-	}
-
-	return ret;
-}
-
-static int of_platform_pm_freeze_noirq(struct device *dev)
-{
-	struct device_driver *drv = dev->driver;
-	int ret = 0;
-
-	if (!drv)
-		return 0;
-
-	if (drv->pm) {
-		if (drv->pm->freeze_noirq)
-			ret = drv->pm->freeze_noirq(dev);
-	}
-
-	return ret;
-}
-
-static int of_platform_pm_thaw(struct device *dev)
-{
-	struct device_driver *drv = dev->driver;
-	int ret = 0;
-
-	if (!drv)
-		return 0;
-
-	if (drv->pm) {
-		if (drv->pm->thaw)
-			ret = drv->pm->thaw(dev);
-	} else {
-		ret = of_platform_legacy_resume(dev);
-	}
-
-	return ret;
-}
-
-static int of_platform_pm_thaw_noirq(struct device *dev)
-{
-	struct device_driver *drv = dev->driver;
-	int ret = 0;
-
-	if (!drv)
-		return 0;
-
-	if (drv->pm) {
-		if (drv->pm->thaw_noirq)
-			ret = drv->pm->thaw_noirq(dev);
-	}
-
-	return ret;
-}
-
-static int of_platform_pm_poweroff(struct device *dev)
-{
-	struct device_driver *drv = dev->driver;
-	int ret = 0;
-
-	if (!drv)
-		return 0;
-
-	if (drv->pm) {
-		if (drv->pm->poweroff)
-			ret = drv->pm->poweroff(dev);
-	} else {
-		ret = of_platform_legacy_suspend(dev, PMSG_HIBERNATE);
-	}
-
-	return ret;
-}
-
-static int of_platform_pm_poweroff_noirq(struct device *dev)
-{
-	struct device_driver *drv = dev->driver;
-	int ret = 0;
-
-	if (!drv)
-		return 0;
-
-	if (drv->pm) {
-		if (drv->pm->poweroff_noirq)
-			ret = drv->pm->poweroff_noirq(dev);
-	}
-
-	return ret;
-}
-
-static int of_platform_pm_restore(struct device *dev)
-{
-	struct device_driver *drv = dev->driver;
-	int ret = 0;
-
-	if (!drv)
-		return 0;
-
-	if (drv->pm) {
-		if (drv->pm->restore)
-			ret = drv->pm->restore(dev);
-	} else {
-		ret = of_platform_legacy_resume(dev);
-	}
-
-	return ret;
-}
-
-static int of_platform_pm_restore_noirq(struct device *dev)
-{
-	struct device_driver *drv = dev->driver;
-	int ret = 0;
-
-	if (!drv)
-		return 0;
-
-	if (drv->pm) {
-		if (drv->pm->restore_noirq)
-			ret = drv->pm->restore_noirq(dev);
-	}
-
-	return ret;
-}
-
-#else /* !CONFIG_HIBERNATION */
-
-#define of_platform_pm_freeze		NULL
-#define of_platform_pm_thaw		NULL
-#define of_platform_pm_poweroff		NULL
-#define of_platform_pm_restore		NULL
-#define of_platform_pm_freeze_noirq	NULL
-#define of_platform_pm_thaw_noirq		NULL
-#define of_platform_pm_poweroff_noirq	NULL
-#define of_platform_pm_restore_noirq	NULL
-
-#endif /* !CONFIG_HIBERNATION */
-
-static struct dev_pm_ops of_platform_dev_pm_ops = {
-	.prepare = of_platform_pm_prepare,
-	.complete = of_platform_pm_complete,
-	.suspend = of_platform_pm_suspend,
-	.resume = of_platform_pm_resume,
-	.freeze = of_platform_pm_freeze,
-	.thaw = of_platform_pm_thaw,
-	.poweroff = of_platform_pm_poweroff,
-	.restore = of_platform_pm_restore,
-	.suspend_noirq = of_platform_pm_suspend_noirq,
-	.resume_noirq = of_platform_pm_resume_noirq,
-	.freeze_noirq = of_platform_pm_freeze_noirq,
-	.thaw_noirq = of_platform_pm_thaw_noirq,
-	.poweroff_noirq = of_platform_pm_poweroff_noirq,
-	.restore_noirq = of_platform_pm_restore_noirq,
-};
-
-#define OF_PLATFORM_PM_OPS_PTR	(&of_platform_dev_pm_ops)
-
-#else /* !CONFIG_PM_SLEEP */
-
-#define OF_PLATFORM_PM_OPS_PTR	NULL
-
-#endif /* !CONFIG_PM_SLEEP */
-
-int of_bus_type_init(struct bus_type *bus, const char *name)
-{
-	bus->name = name;
-	bus->match = of_platform_bus_match;
-	bus->probe = of_platform_device_probe;
-	bus->remove = of_platform_device_remove;
-	bus->shutdown = of_platform_device_shutdown;
-	bus->dev_attrs = of_platform_device_attrs;
-	bus->pm = OF_PLATFORM_PM_OPS_PTR;
-	return bus_register(bus);
-}
-
-int of_register_driver(struct of_platform_driver *drv, struct bus_type *bus)
-{
-	/*
-	 * Temporary: of_platform_bus used to be distinct from the platform
-	 * bus.  It isn't anymore, and so drivers on the platform bus need
-	 * to be registered in a special way.
-	 *
-	 * After all of_platform_bus_type drivers are converted to
-	 * platform_drivers, this exception can be removed.
-	 */
-	if (bus == &platform_bus_type)
-		return of_register_platform_driver(drv);
-
-	/* register with core */
-	drv->driver.bus = bus;
-	return driver_register(&drv->driver);
-}
-EXPORT_SYMBOL(of_register_driver);
-
-void of_unregister_driver(struct of_platform_driver *drv)
-{
-	if (drv->driver.bus == &platform_bus_type)
-		of_unregister_platform_driver(drv);
-	else
-		driver_unregister(&drv->driver);
-}
-EXPORT_SYMBOL(of_unregister_driver);
-
 #if !defined(CONFIG_SPARC)
 /*
  * The following routines scan a subtree and registers a device for
@@ -671,13 +210,16 @@ struct platform_device *of_platform_device_create(struct device_node *np,
 EXPORT_SYMBOL(of_platform_device_create);
 
 /**
- * of_platform_bus_create - Create an OF device for a bus node and all its
- * children. Optionally recursively instantiate matching busses.
+ * of_platform_bus_create() - Create a device for a node and its children.
  * @bus: device node of the bus to instantiate
- * @matches: match table, NULL to use the default, OF_NO_DEEP_PROBE to
- * disallow recursive creation of child busses
+ * @matches: match table for bus nodes
+ * disallow recursive creation of child buses
+ * @parent: parent for new device, or NULL for top level.
+ *
+ * Creates a platform_device for the provided device_node, and optionally
+ * recursively create devices for all the child nodes.
  */
-static int of_platform_bus_create(const struct device_node *bus,
+static int of_platform_bus_create(struct device_node *bus,
 				  const struct of_device_id *matches,
 				  struct device *parent)
 {
@@ -685,18 +227,13 @@ static int of_platform_bus_create(const struct device_node *bus,
 	struct platform_device *dev;
 	int rc = 0;
 
+	dev = of_platform_device_create(bus, NULL, parent);
+	if (!dev || !of_match_node(matches, bus))
+		return 0;
+
 	for_each_child_of_node(bus, child) {
 		pr_debug("   create child: %s\n", child->full_name);
-		dev = of_platform_device_create(child, NULL, parent);
-		if (dev == NULL)
-			continue;
-
-		if (!of_match_node(matches, child))
-			continue;
-		if (rc == 0) {
-			pr_debug("   and sub busses\n");
-			rc = of_platform_bus_create(child, matches, &dev->dev);
-		}
+		rc = of_platform_bus_create(child, matches, &dev->dev);
 		if (rc) {
 			of_node_put(child);
 			break;
@@ -706,9 +243,9 @@ static int of_platform_bus_create(const struct device_node *bus,
 }
 
 /**
- * of_platform_bus_probe - Probe the device-tree for platform busses
+ * of_platform_bus_probe() - Probe the device-tree for platform buses
  * @root: parent of the first level to probe or NULL for the root of the tree
- * @matches: match table, NULL to use the default
+ * @matches: match table for bus nodes
  * @parent: parent to hook devices from, NULL for toplevel
  *
  * Note that children of the provided root are not instantiated as devices
@@ -719,50 +256,26 @@ int of_platform_bus_probe(struct device_node *root,
 			  struct device *parent)
 {
 	struct device_node *child;
-	struct platform_device *dev;
 	int rc = 0;
 
-	if (WARN_ON(!matches || matches == OF_NO_DEEP_PROBE))
-		return -EINVAL;
-	if (root == NULL)
-		root = of_find_node_by_path("/");
-	else
-		of_node_get(root);
-	if (root == NULL)
+	root = root ? of_node_get(root) : of_find_node_by_path("/");
+	if (!root)
 		return -EINVAL;
 
 	pr_debug("of_platform_bus_probe()\n");
 	pr_debug(" starting at: %s\n", root->full_name);
 
-	/* Do a self check of bus type, if there's a match, create
-	 * children
-	 */
+	/* Do a self check of bus type, if there's a match, create children */
 	if (of_match_node(matches, root)) {
-		pr_debug(" root match, create all sub devices\n");
-		dev = of_platform_device_create(root, NULL, parent);
-		if (dev == NULL)
-			goto bail;
-
-		pr_debug(" create all sub busses\n");
-		rc = of_platform_bus_create(root, matches, &dev->dev);
-		goto bail;
-	}
-	for_each_child_of_node(root, child) {
+		rc = of_platform_bus_create(root, matches, parent);
+	} else for_each_child_of_node(root, child) {
 		if (!of_match_node(matches, child))
 			continue;
-
-		pr_debug("  match: %s\n", child->full_name);
-		dev = of_platform_device_create(child, NULL, parent);
-		if (dev == NULL)
-			continue;
-
-		rc = of_platform_bus_create(child, matches, &dev->dev);
-		if (rc) {
-			of_node_put(child);
+		rc = of_platform_bus_create(child, matches, parent);
+		if (rc)
 			break;
-		}
 	}
- bail:
+
 	of_node_put(root);
 	return rc;
 }