Merge branch 'acpi-fixes' into fixes

* acpi-fixes:
  ACPI / glue: Drop .find_bridge() callback from struct acpi_bus_type
  ACPI / glue: Add .match() callback to struct acpi_bus_type
  ACPI / porocessor: Beautify code, pr->id is u32 which is never < 0
  ACPI / processor: Remove redundant NULL check before kfree
  ACPI / Sleep: Avoid interleaved message on errors

drivers/acpi/glue.c

@@ -36,12 +36,11 @@ int register_acpi_bus_type(struct acpi_bus_type *type)
 {
 	if (acpi_disabled)
 		return -ENODEV;
-	if (type && type->bus && type->find_device) {
+	if (type && type->match && type->find_device) {
 		down_write(&bus_type_sem);
 		list_add_tail(&type->list, &bus_type_list);
 		up_write(&bus_type_sem);
-		printk(KERN_INFO PREFIX "bus type %s registered\n",
-		       type->bus->name);
+		printk(KERN_INFO PREFIX "bus type %s registered\n", type->name);
 		return 0;
 	}
 	return -ENODEV;
@@ -56,24 +55,21 @@ int unregister_acpi_bus_type(struct acpi_bus_type *type)
 		down_write(&bus_type_sem);
 		list_del_init(&type->list);
 		up_write(&bus_type_sem);
-		printk(KERN_INFO PREFIX "ACPI bus type %s unregistered\n",
-		       type->bus->name);
+		printk(KERN_INFO PREFIX "bus type %s unregistered\n",
+		       type->name);
 		return 0;
 	}
 	return -ENODEV;
 }
 EXPORT_SYMBOL_GPL(unregister_acpi_bus_type);
 
-static struct acpi_bus_type *acpi_get_bus_type(struct bus_type *type)
+static struct acpi_bus_type *acpi_get_bus_type(struct device *dev)
 {
 	struct acpi_bus_type *tmp, *ret = NULL;
 
-	if (!type)
-		return NULL;
-
 	down_read(&bus_type_sem);
 	list_for_each_entry(tmp, &bus_type_list, list) {
-		if (tmp->bus == type) {
+		if (tmp->match(dev)) {
 			ret = tmp;
 			break;
 		}
@@ -82,22 +78,6 @@ static struct acpi_bus_type *acpi_get_bus_type(struct bus_type *type)
 	return ret;
 }
 
-static int acpi_find_bridge_device(struct device *dev, acpi_handle * handle)
-{
-	struct acpi_bus_type *tmp;
-	int ret = -ENODEV;
-
-	down_read(&bus_type_sem);
-	list_for_each_entry(tmp, &bus_type_list, list) {
-		if (tmp->find_bridge && !tmp->find_bridge(dev, handle)) {
-			ret = 0;
-			break;
-		}
-	}
-	up_read(&bus_type_sem);
-	return ret;
-}
-
 static acpi_status do_acpi_find_child(acpi_handle handle, u32 lvl_not_used,
 				      void *addr_p, void **ret_p)
 {
@@ -261,29 +241,12 @@ err:
 
 static int acpi_platform_notify(struct device *dev)
 {
-	struct acpi_bus_type *type;
+	struct acpi_bus_type *type = acpi_get_bus_type(dev);
 	acpi_handle handle;
 	int ret;
 
 	ret = acpi_bind_one(dev, NULL);
-	if (ret && (!dev->bus || !dev->parent)) {
-		/* bridge devices genernally haven't bus or parent */
-		ret = acpi_find_bridge_device(dev, &handle);
-		if (!ret) {
-			ret = acpi_bind_one(dev, handle);
-			if (ret)
-				goto out;
-		}
-	}
-
-	type = acpi_get_bus_type(dev->bus);
-	if (ret) {
-		if (!type || !type->find_device) {
-			DBG("No ACPI bus support for %s\n", dev_name(dev));
-			ret = -EINVAL;
-			goto out;
-		}
-
+	if (ret && type) {
 		ret = type->find_device(dev, &handle);
 		if (ret) {
 			DBG("Unable to get handle for %s\n", dev_name(dev));
@@ -316,7 +279,7 @@ static int acpi_platform_notify_remove(struct device *dev)
 {
 	struct acpi_bus_type *type;
 
-	type = acpi_get_bus_type(dev->bus);
+	type = acpi_get_bus_type(dev);
 	if (type && type->cleanup)
 		type->cleanup(dev);
 

drivers/acpi/processor_core.c

@@ -158,8 +158,7 @@ static int map_mat_entry(acpi_handle handle, int type, u32 acpi_id)
 	}
 
 exit:
-	if (buffer.pointer)
-		kfree(buffer.pointer);
+	kfree(buffer.pointer);
 	return apic_id;
 }
 

drivers/acpi/processor_driver.c

@@ -559,7 +559,7 @@ static int __cpuinit acpi_processor_add(struct acpi_device *device)
 		return 0;
 #endif
 
-	BUG_ON((pr->id >= nr_cpu_ids) || (pr->id < 0));
+	BUG_ON(pr->id >= nr_cpu_ids);
 
 	/*
 	 * Buggy BIOS check

drivers/acpi/sleep.c

@@ -599,7 +599,6 @@ static void acpi_sleep_suspend_setup(void)
 		status = acpi_get_sleep_type_data(i, &type_a, &type_b);
 		if (ACPI_SUCCESS(status)) {
 			sleep_states[i] = 1;
-			pr_cont(" S%d", i);
 		}
 	}
 
@@ -742,7 +741,6 @@ static void acpi_sleep_hibernate_setup(void)
 	hibernation_set_ops(old_suspend_ordering ?
 			&acpi_hibernation_ops_old : &acpi_hibernation_ops);
 	sleep_states[ACPI_STATE_S4] = 1;
-	pr_cont(KERN_CONT " S4");
 	if (nosigcheck)
 		return;
 
@@ -788,6 +786,9 @@ int __init acpi_sleep_init(void)
 {
 	acpi_status status;
 	u8 type_a, type_b;
+	char supported[ACPI_S_STATE_COUNT * 3 + 1];
+	char *pos = supported;
+	int i;
 
 	if (acpi_disabled)
 		return 0;
@@ -795,7 +796,6 @@ int __init acpi_sleep_init(void)
 	acpi_sleep_dmi_check();
 
 	sleep_states[ACPI_STATE_S0] = 1;
-	pr_info(PREFIX "(supports S0");
 
 	acpi_sleep_suspend_setup();
 	acpi_sleep_hibernate_setup();
@@ -803,11 +803,17 @@ int __init acpi_sleep_init(void)
 	status = acpi_get_sleep_type_data(ACPI_STATE_S5, &type_a, &type_b);
 	if (ACPI_SUCCESS(status)) {
 		sleep_states[ACPI_STATE_S5] = 1;
-		pr_cont(" S5");
 		pm_power_off_prepare = acpi_power_off_prepare;
 		pm_power_off = acpi_power_off;
 	}
-	pr_cont(")\n");
+
+	supported[0] = 0;
+	for (i = 0; i < ACPI_S_STATE_COUNT; i++) {
+		if (sleep_states[i])
+			pos += sprintf(pos, " S%d", i);
+	}
+	pr_info(PREFIX "(supports%s)\n", supported);
+
 	/*
 	 * Register the tts_notifier to reboot notifier list so that the _TTS
 	 * object can also be evaluated when the system enters S5.

drivers/ata/libata-acpi.c

@@ -1144,13 +1144,8 @@ static int ata_acpi_find_device(struct device *dev, acpi_handle *handle)
 		return -ENODEV;
 }
 
-static int ata_acpi_find_dummy(struct device *dev, acpi_handle *handle)
-{
-	return -ENODEV;
-}
-
 static struct acpi_bus_type ata_acpi_bus = {
-	.find_bridge = ata_acpi_find_dummy,
+	.name = "ATA",
 	.find_device = ata_acpi_find_device,
 };
 

drivers/pci/pci-acpi.c

@@ -331,8 +331,14 @@ static void pci_acpi_cleanup(struct device *dev)
 	}
 }
 
+static bool pci_acpi_bus_match(struct device *dev)
+{
+	return dev->bus == &pci_bus_type;
+}
+
 static struct acpi_bus_type acpi_pci_bus = {
-	.bus = &pci_bus_type,
+	.name = "PCI",
+	.match = pci_acpi_bus_match,
 	.find_device = acpi_pci_find_device,
 	.setup = pci_acpi_setup,
 	.cleanup = pci_acpi_cleanup,

drivers/pnp/pnpacpi/core.c

@@ -353,8 +353,14 @@ static int __init acpi_pnp_find_device(struct device *dev, acpi_handle * handle)
 /* complete initialization of a PNPACPI device includes having
  * pnpdev->dev.archdata.acpi_handle point to its ACPI sibling.
  */
+static bool acpi_pnp_bus_match(struct device *dev)
+{
+	return dev->bus == &pnp_bus_type;
+}
+
 static struct acpi_bus_type __initdata acpi_pnp_bus = {
-	.bus	     = &pnp_bus_type,
+	.name	     = "PNP",
+	.match	     = acpi_pnp_bus_match,
 	.find_device = acpi_pnp_find_device,
 };
 

drivers/scsi/scsi_lib.c

@@ -71,9 +71,14 @@ struct kmem_cache *scsi_sdb_cache;
 #ifdef CONFIG_ACPI
 #include <acpi/acpi_bus.h>
 
+static bool acpi_scsi_bus_match(struct device *dev)
+{
+	return dev->bus == &scsi_bus_type;
+}
+
 int scsi_register_acpi_bus_type(struct acpi_bus_type *bus)
 {
-        bus->bus = &scsi_bus_type;
+        bus->match = acpi_scsi_bus_match;
         return register_acpi_bus_type(bus);
 }
 EXPORT_SYMBOL_GPL(scsi_register_acpi_bus_type);

drivers/usb/core/usb-acpi.c

@@ -210,9 +210,14 @@ static int usb_acpi_find_device(struct device *dev, acpi_handle *handle)
 	return 0;
 }
 
+static bool usb_acpi_bus_match(struct device *dev)
+{
+	return is_usb_device(dev) || is_usb_port(dev);
+}
+
 static struct acpi_bus_type usb_acpi_bus = {
-	.bus = &usb_bus_type,
-	.find_bridge = usb_acpi_find_device,
+	.name = "USB",
+	.match = usb_acpi_bus_match,
 	.find_device = usb_acpi_find_device,
 };
 

include/acpi/acpi_bus.h

@@ -437,11 +437,9 @@ void acpi_remove_dir(struct acpi_device *);
  */
 struct acpi_bus_type {
 	struct list_head list;
-	struct bus_type *bus;
-	/* For general devices under the bus */
+	const char *name;
+	bool (*match)(struct device *dev);
 	int (*find_device) (struct device *, acpi_handle *);
-	/* For bridges, such as PCI root bridge, IDE controller */
-	int (*find_bridge) (struct device *, acpi_handle *);
 	void (*setup)(struct device *);
 	void (*cleanup)(struct device *);
 };