Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-2.6

Trivial manual merge fixup for usb_find_interface clashes.

64 files changed, 869 insertions, 814 deletions

diff --git a/Documentation/powerpc/eeh-pci-error-recovery.txt b/Documentation/powerpc/eeh-pci-error-recovery.txt
index e75d7474322c..67a11a36270c 100644
--- a/Documentation/powerpc/eeh-pci-error-recovery.txt
+++ b/Documentation/powerpc/eeh-pci-error-recovery.txt
@@ -115,7 +115,7 @@ Current PPC64 Linux EEH Implementation
 At this time, a generic EEH recovery mechanism has been implemented,
 so that individual device drivers do not need to be modified to support
 EEH recovery.  This generic mechanism piggy-backs on the PCI hotplug
-infrastructure,  and percolates events up through the hotplug/udev
+infrastructure,  and percolates events up through the userspace/udev
 infrastructure.  Followiing is a detailed description of how this is
 accomplished.
 
@@ -172,7 +172,7 @@ A handler for the EEH notifier_block events is implemented in
 drivers/pci/hotplug/pSeries_pci.c, called handle_eeh_events().
 It saves the device BAR's and then calls rpaphp_unconfig_pci_adapter().
 This last call causes the device driver for the card to be stopped,
-which causes hotplug events to go out to user space. This triggers
+which causes uevents to go out to user space. This triggers
 user-space scripts that might issue commands such as "ifdown eth0"
 for ethernet cards, and so on.  This handler then sleeps for 5 seconds,
 hoping to give the user-space scripts enough time to complete.
@@ -258,29 +258,30 @@ rpa_php_unconfig_pci_adapter() {             // in rpaphp_pci.c
     calls
     pci_destroy_dev (struct pci_dev *) {
       calls
-      device_unregister (&dev->dev) {      // in /drivers/base/core.c
+      device_unregister (&dev->dev) {        // in /drivers/base/core.c
         calls
-        device_del(struct device * dev) {  // in /drivers/base/core.c
+        device_del(struct device * dev) {    // in /drivers/base/core.c
           calls
-          kobject_del() {                  //in /libs/kobject.c
+          kobject_del() {                    //in /libs/kobject.c
             calls
-            kobject_hotplug() {            // in /libs/kobject.c
+            kobject_uevent() {               // in /libs/kobject.c
               calls
-              kset_hotplug() {             // in /lib/kobject.c
+              kset_uevent() {                // in /lib/kobject.c
                 calls
-                kset->hotplug_ops->hotplug() which is really just
+                kset->uevent_ops->uevent()   // which is really just
                 a call to
-                dev_hotplug() {           // in /drivers/base/core.c
+                dev_uevent() {               // in /drivers/base/core.c
                   calls
-                  dev->bus->hotplug() which is really just a call to
-                  pci_hotplug () {      // in drivers/pci/hotplug.c
+                  dev->bus->uevent() which is really just a call to
+                  pci_uevent () {            // in drivers/pci/hotplug.c
                     which prints device name, etc....
                  }
                }
-               then kset_hotplug() calls
-                call_usermodehelper () with
-                   argv[0]=hotplug_path[] which is "/sbin/hotplug"
-             --> event to userspace,
+               then kobject_uevent() sends a netlink uevent to userspace
+               --> userspace uevent
+               (during early boot, nobody listens to netlink events and
+               kobject_uevent() executes uevent_helper[], which runs the
+               event process /sbin/hotplug)
            }
          }
          kobject_del() then calls sysfs_remove_dir(), which would
diff --git a/MAINTAINERS b/MAINTAINERS
index 1e59d3966012..6246b7f11632 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1480,12 +1480,6 @@ W:	http://nfs.sourceforge.net/
 W:	http://www.cse.unsw.edu.au/~neilb/patches/linux-devel/
 S:	Maintained
 
-KERNEL EVENT LAYER (KOBJECT_UEVENT)
-P:	Robert Love
-M:	rml@novell.com
-L:	linux-kernel@vger.kernel.org
-S:	Maintained
-
 KEXEC
 P:	Eric Biederman
 P:	Randy Dunlap
diff --git a/arch/arm/common/amba.c b/arch/arm/common/amba.c
index e1013112c354..c95ec9eab996 100644
--- a/arch/arm/common/amba.c
+++ b/arch/arm/common/amba.c
@@ -45,7 +45,7 @@ static int amba_match(struct device *dev, struct device_driver *drv)
 }
 
 #ifdef CONFIG_HOTPLUG
-static int amba_hotplug(struct device *dev, char **envp, int nr_env, char *buf, int bufsz)
+static int amba_uevent(struct device *dev, char **envp, int nr_env, char *buf, int bufsz)
 {
 	struct amba_device *pcdev = to_amba_device(dev);
 
@@ -58,7 +58,7 @@ static int amba_hotplug(struct device *dev, char **envp, int nr_env, char *buf,
 	return 0;
 }
 #else
-#define amba_hotplug NULL
+#define amba_uevent NULL
 #endif
 
 static int amba_suspend(struct device *dev, pm_message_t state)
@@ -88,7 +88,7 @@ static int amba_resume(struct device *dev)
 static struct bus_type amba_bustype = {
 	.name		= "amba",
 	.match		= amba_match,
-	.hotplug	= amba_hotplug,
+	.uevent		= amba_uevent,
 	.suspend	= amba_suspend,
 	.resume		= amba_resume,
 };
diff --git a/arch/ia64/sn/kernel/tiocx.c b/arch/ia64/sn/kernel/tiocx.c
index 0d8592a745a7..768c21deb2e5 100644
--- a/arch/ia64/sn/kernel/tiocx.c
+++ b/arch/ia64/sn/kernel/tiocx.c
@@ -65,7 +65,7 @@ static int tiocx_match(struct device *dev, struct device_driver *drv)
 
 }
 
-static int tiocx_hotplug(struct device *dev, char **envp, int num_envp,
+static int tiocx_uevent(struct device *dev, char **envp, int num_envp,
 			 char *buffer, int buffer_size)
 {
 	return -ENODEV;
@@ -79,7 +79,7 @@ static void tiocx_bus_release(struct device *dev)
 struct bus_type tiocx_bus_type = {
 	.name = "tiocx",
 	.match = tiocx_match,
-	.hotplug = tiocx_hotplug,
+	.uevent = tiocx_uevent,
 };
 
 /**
diff --git a/arch/powerpc/kernel/vio.c b/arch/powerpc/kernel/vio.c
index 71a6addf9f7f..13c41495fe06 100644
--- a/arch/powerpc/kernel/vio.c
+++ b/arch/powerpc/kernel/vio.c
@@ -293,6 +293,6 @@ static int vio_hotplug(struct device *dev, char **envp, int num_envp,
 
 struct bus_type vio_bus_type = {
 	.name = "vio",
-	.hotplug = vio_hotplug,
+	.uevent = vio_hotplug,
 	.match = vio_bus_match,
 };
diff --git a/block/genhd.c b/block/genhd.c
index f04609d553b8..f1ed83f3f083 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -358,7 +358,7 @@ static struct sysfs_ops disk_sysfs_ops = {
 static ssize_t disk_uevent_store(struct gendisk * disk,
 				 const char *buf, size_t count)
 {
-	kobject_hotplug(&disk->kobj, KOBJ_ADD);
+	kobject_uevent(&disk->kobj, KOBJ_ADD);
 	return count;
 }
 static ssize_t disk_dev_read(struct gendisk * disk, char *page)
@@ -455,14 +455,14 @@ static struct kobj_type ktype_block = {
 
 extern struct kobj_type ktype_part;
 
-static int block_hotplug_filter(struct kset *kset, struct kobject *kobj)
+static int block_uevent_filter(struct kset *kset, struct kobject *kobj)
 {
 	struct kobj_type *ktype = get_ktype(kobj);
 
 	return ((ktype == &ktype_block) || (ktype == &ktype_part));
 }
 
-static int block_hotplug(struct kset *kset, struct kobject *kobj, char **envp,
+static int block_uevent(struct kset *kset, struct kobject *kobj, char **envp,
 			 int num_envp, char *buffer, int buffer_size)
 {
 	struct kobj_type *ktype = get_ktype(kobj);
@@ -474,40 +474,40 @@ static int block_hotplug(struct kset *kset, struct kobject *kobj, char **envp,
 
 	if (ktype == &ktype_block) {
 		disk = container_of(kobj, struct gendisk, kobj);
-		add_hotplug_env_var(envp, num_envp, &i, buffer, buffer_size,
-				    &length, "MINOR=%u", disk->first_minor);
+		add_uevent_var(envp, num_envp, &i, buffer, buffer_size,
+			       &length, "MINOR=%u", disk->first_minor);
 	} else if (ktype == &ktype_part) {
 		disk = container_of(kobj->parent, struct gendisk, kobj);
 		part = container_of(kobj, struct hd_struct, kobj);
-		add_hotplug_env_var(envp, num_envp, &i, buffer, buffer_size,
-				    &length, "MINOR=%u",
-				    disk->first_minor + part->partno);
+		add_uevent_var(envp, num_envp, &i, buffer, buffer_size,
+			       &length, "MINOR=%u",
+			       disk->first_minor + part->partno);
 	} else
 		return 0;
 
-	add_hotplug_env_var(envp, num_envp, &i, buffer, buffer_size, &length,
-			    "MAJOR=%u", disk->major);
+	add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &length,
+		       "MAJOR=%u", disk->major);
 
 	/* add physical device, backing this device  */
 	physdev = disk->driverfs_dev;
 	if (physdev) {
 		char *path = kobject_get_path(&physdev->kobj, GFP_KERNEL);
 
-		add_hotplug_env_var(envp, num_envp, &i, buffer, buffer_size,
-				    &length, "PHYSDEVPATH=%s", path);
+		add_uevent_var(envp, num_envp, &i, buffer, buffer_size,
+			       &length, "PHYSDEVPATH=%s", path);
 		kfree(path);
 
 		if (physdev->bus)
-			add_hotplug_env_var(envp, num_envp, &i,
-					    buffer, buffer_size, &length,
-					    "PHYSDEVBUS=%s",
-					    physdev->bus->name);
+			add_uevent_var(envp, num_envp, &i,
+				       buffer, buffer_size, &length,
+				       "PHYSDEVBUS=%s",
+				       physdev->bus->name);
 
 		if (physdev->driver)
-			add_hotplug_env_var(envp, num_envp, &i,
-					    buffer, buffer_size, &length,
-					    "PHYSDEVDRIVER=%s",
-					    physdev->driver->name);
+			add_uevent_var(envp, num_envp, &i,
+				       buffer, buffer_size, &length,
+				       "PHYSDEVDRIVER=%s",
+				       physdev->driver->name);
 	}
 
 	/* terminate, set to next free slot, shrink available space */
@@ -520,13 +520,13 @@ static int block_hotplug(struct kset *kset, struct kobject *kobj, char **envp,
 	return 0;
 }
 
-static struct kset_hotplug_ops block_hotplug_ops = {
-	.filter		= block_hotplug_filter,
-	.hotplug	= block_hotplug,
+static struct kset_uevent_ops block_uevent_ops = {
+	.filter		= block_uevent_filter,
+	.uevent		= block_uevent,
 };
 
 /* declare block_subsys. */
-static decl_subsys(block, &ktype_block, &block_hotplug_ops);
+static decl_subsys(block, &ktype_block, &block_uevent_ops);
 
 
 /*
diff --git a/drivers/acpi/container.c b/drivers/acpi/container.c
index 27ec12c1fab0..b69a8cad82b7 100644
--- a/drivers/acpi/container.c
+++ b/drivers/acpi/container.c
@@ -172,21 +172,21 @@ static void container_notify_cb(acpi_handle handle, u32 type, void *context)
 			if (ACPI_FAILURE(status) || !device) {
 				result = container_device_add(&device, handle);
 				if (!result)
-					kobject_hotplug(&device->kobj,
-							KOBJ_ONLINE);
+					kobject_uevent(&device->kobj,
+						       KOBJ_ONLINE);
 				else
 					printk("Failed to add container\n");
 			}
 		} else {
 			if (ACPI_SUCCESS(status)) {
 				/* device exist and this is a remove request */
-				kobject_hotplug(&device->kobj, KOBJ_OFFLINE);
+				kobject_uevent(&device->kobj, KOBJ_OFFLINE);
 			}
 		}
 		break;
 	case ACPI_NOTIFY_EJECT_REQUEST:
 		if (!acpi_bus_get_device(handle, &device) && device) {
-			kobject_hotplug(&device->kobj, KOBJ_OFFLINE);
+			kobject_uevent(&device->kobj, KOBJ_OFFLINE);
 		}
 		break;
 	default:
diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c
index 0c561c571f29..1278aca96fe3 100644
--- a/drivers/acpi/processor_core.c
+++ b/drivers/acpi/processor_core.c
@@ -748,7 +748,7 @@ int acpi_processor_device_add(acpi_handle handle, struct acpi_device **device)
 		return_VALUE(-ENODEV);
 
 	if ((pr->id >= 0) && (pr->id < NR_CPUS)) {
-		kobject_hotplug(&(*device)->kobj, KOBJ_ONLINE);
+		kobject_uevent(&(*device)->kobj, KOBJ_ONLINE);
 	}
 	return_VALUE(0);
 }
@@ -788,13 +788,13 @@ acpi_processor_hotplug_notify(acpi_handle handle, u32 event, void *data)
 		}
 
 		if (pr->id >= 0 && (pr->id < NR_CPUS)) {
-			kobject_hotplug(&device->kobj, KOBJ_OFFLINE);
+			kobject_uevent(&device->kobj, KOBJ_OFFLINE);
 			break;
 		}
 
 		result = acpi_processor_start(device);
 		if ((!result) && ((pr->id >= 0) && (pr->id < NR_CPUS))) {
-			kobject_hotplug(&device->kobj, KOBJ_ONLINE);
+			kobject_uevent(&device->kobj, KOBJ_ONLINE);
 		} else {
 			ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
 					  "Device [%s] failed to start\n",
@@ -818,7 +818,7 @@ acpi_processor_hotplug_notify(acpi_handle handle, u32 event, void *data)
 		}
 
 		if ((pr->id < NR_CPUS) && (cpu_present(pr->id)))
-			kobject_hotplug(&device->kobj, KOBJ_OFFLINE);
+			kobject_uevent(&device->kobj, KOBJ_OFFLINE);
 		break;
 	default:
 		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index 31218e1d2a18..0745d20afb8c 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -78,7 +78,7 @@ static struct kobj_type ktype_acpi_ns = {
 	.release = acpi_device_release,
 };
 
-static int namespace_hotplug(struct kset *kset, struct kobject *kobj,
+static int namespace_uevent(struct kset *kset, struct kobject *kobj,
 			     char **envp, int num_envp, char *buffer,
 			     int buffer_size)
 {
@@ -89,8 +89,8 @@ static int namespace_hotplug(struct kset *kset, struct kobject *kobj,
 	if (!dev->driver)
 		return 0;
 
-	if (add_hotplug_env_var(envp, num_envp, &i, buffer, buffer_size, &len,
-				"PHYSDEVDRIVER=%s", dev->driver->name))
+	if (add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &len,
+			   "PHYSDEVDRIVER=%s", dev->driver->name))
 		return -ENOMEM;
 
 	envp[i] = NULL;
@@ -98,8 +98,8 @@ static int namespace_hotplug(struct kset *kset, struct kobject *kobj,
 	return 0;
 }
 
-static struct kset_hotplug_ops namespace_hotplug_ops = {
-	.hotplug = &namespace_hotplug,
+static struct kset_uevent_ops namespace_uevent_ops = {
+	.uevent = &namespace_uevent,
 };
 
 static struct kset acpi_namespace_kset = {
@@ -108,7 +108,7 @@ static struct kset acpi_namespace_kset = {
 		 },
 	.subsys = &acpi_subsys,
 	.ktype = &ktype_acpi_ns,
-	.hotplug_ops = &namespace_hotplug_ops,
+	.uevent_ops = &namespace_uevent_ops,
 };
 
 static void acpi_device_register(struct acpi_device *device,
@@ -347,7 +347,7 @@ static int acpi_bus_get_wakeup_device_flags(struct acpi_device *device)
 }
 
 /* --------------------------------------------------------------------------
-		ACPI hotplug sysfs device file support
+		ACPI sysfs device file support
    -------------------------------------------------------------------------- */
 static ssize_t acpi_eject_store(struct acpi_device *device,
 				const char *buf, size_t count);
diff --git a/drivers/base/Kconfig b/drivers/base/Kconfig
index 934149c1512b..f0eff3dac58d 100644
--- a/drivers/base/Kconfig
+++ b/drivers/base/Kconfig
@@ -19,11 +19,11 @@ config PREVENT_FIRMWARE_BUILD
 	  If unsure say Y here.
 
 config FW_LOADER
-	tristate "Hotplug firmware loading support"
+	tristate "Userspace firmware loading support"
 	select HOTPLUG
 	---help---
 	  This option is provided for the case where no in-kernel-tree modules
-	  require hotplug firmware loading support, but a module built outside
+	  require userspace firmware loading support, but a module built outside
 	  the kernel tree does.
 
 config DEBUG_DRIVER
diff --git a/drivers/base/bus.c b/drivers/base/bus.c
index fa601b085eba..29f6af554e71 100644
--- a/drivers/base/bus.c
+++ b/drivers/base/bus.c
@@ -152,7 +152,11 @@ static ssize_t driver_unbind(struct device_driver *drv,
 
 	dev = bus_find_device(bus, NULL, (void *)buf, driver_helper);
 	if (dev && dev->driver == drv) {
+		if (dev->parent)	/* Needed for USB */
+			down(&dev->parent->sem);
 		device_release_driver(dev);
+		if (dev->parent)
+			up(&dev->parent->sem);
 		err = count;
 	}
 	put_device(dev);
@@ -175,9 +179,13 @@ static ssize_t driver_bind(struct device_driver *drv,
 
 	dev = bus_find_device(bus, NULL, (void *)buf, driver_helper);
 	if (dev && dev->driver == NULL) {
+		if (dev->parent)	/* Needed for USB */
+			down(&dev->parent->sem);
 		down(&dev->sem);
 		err = driver_probe_device(drv, dev);
 		up(&dev->sem);
+		if (dev->parent)
+			up(&dev->parent->sem);
 	}
 	put_device(dev);
 	put_bus(bus);
@@ -420,6 +428,26 @@ static void driver_remove_attrs(struct bus_type * bus, struct device_driver * dr
 	}
 }
 
+#ifdef CONFIG_HOTPLUG
+/*
+ * Thanks to drivers making their tables __devinit, we can't allow manual
+ * bind and unbind from userspace unless CONFIG_HOTPLUG is enabled.
+ */
+static void add_bind_files(struct device_driver *drv)
+{
+	driver_create_file(drv, &driver_attr_unbind);
+	driver_create_file(drv, &driver_attr_bind);
+}
+
+static void remove_bind_files(struct device_driver *drv)
+{
+	driver_remove_file(drv, &driver_attr_bind);
+	driver_remove_file(drv, &driver_attr_unbind);
+}
+#else
+static inline void add_bind_files(struct device_driver *drv) {}
+static inline void remove_bind_files(struct device_driver *drv) {}
+#endif
 
 /**
  *	bus_add_driver - Add a driver to the bus.
@@ -449,8 +477,7 @@ int bus_add_driver(struct device_driver * drv)
 		module_add_driver(drv->owner, drv);
 
 		driver_add_attrs(bus, drv);
-		driver_create_file(drv, &driver_attr_unbind);
-		driver_create_file(drv, &driver_attr_bind);
+		add_bind_files(drv);
 	}
 	return error;
 }
@@ -468,8 +495,7 @@ int bus_add_driver(struct device_driver * drv)
 void bus_remove_driver(struct device_driver * drv)
 {
 	if (drv->bus) {
-		driver_remove_file(drv, &driver_attr_bind);
-		driver_remove_file(drv, &driver_attr_unbind);
+		remove_bind_files(drv);
 		driver_remove_attrs(drv->bus, drv);
 		klist_remove(&drv->knode_bus);
 		pr_debug("bus %s: remove driver %s\n", drv->bus->name, drv->name);
@@ -484,8 +510,13 @@ void bus_remove_driver(struct device_driver * drv)
 /* Helper for bus_rescan_devices's iter */
 static int bus_rescan_devices_helper(struct device *dev, void *data)
 {
-	if (!dev->driver)
+	if (!dev->driver) {
+		if (dev->parent)	/* Needed for USB */
+			down(&dev->parent->sem);
 		device_attach(dev);
+		if (dev->parent)
+			up(&dev->parent->sem);
+	}
 	return 0;
 }
 
diff --git a/drivers/base/class.c b/drivers/base/class.c
index db65fd0babe9..df7fdabd0730 100644
--- a/drivers/base/class.c
+++ b/drivers/base/class.c
@@ -178,7 +178,7 @@ static void class_device_create_release(struct class_device *class_dev)
 }
 
 /* needed to allow these devices to have parent class devices */
-static int class_device_create_hotplug(struct class_device *class_dev,
+static int class_device_create_uevent(struct class_device *class_dev,
 				       char **envp, int num_envp,
 				       char *buffer, int buffer_size)
 {
@@ -331,7 +331,7 @@ static struct kobj_type ktype_class_device = {
 	.release	= class_dev_release,
 };
 
-static int class_hotplug_filter(struct kset *kset, struct kobject *kobj)
+static int class_uevent_filter(struct kset *kset, struct kobject *kobj)
 {
 	struct kobj_type *ktype = get_ktype(kobj);
 
@@ -343,14 +343,14 @@ static int class_hotplug_filter(struct kset *kset, struct kobject *kobj)
 	return 0;
 }
 
-static const char *class_hotplug_name(struct kset *kset, struct kobject *kobj)
+static const char *class_uevent_name(struct kset *kset, struct kobject *kobj)
 {
 	struct class_device *class_dev = to_class_dev(kobj);
 
 	return class_dev->class->name;
 }
 
-static int class_hotplug(struct kset *kset, struct kobject *kobj, char **envp,
+static int class_uevent(struct kset *kset, struct kobject *kobj, char **envp,
 			 int num_envp, char *buffer, int buffer_size)
 {
 	struct class_device *class_dev = to_class_dev(kobj);
@@ -365,29 +365,29 @@ static int class_hotplug(struct kset *kset, struct kobject *kobj, char **envp,
 		struct device *dev = class_dev->dev;
 		char *path = kobject_get_path(&dev->kobj, GFP_KERNEL);
 
-		add_hotplug_env_var(envp, num_envp, &i, buffer, buffer_size,
-				    &length, "PHYSDEVPATH=%s", path);
+		add_uevent_var(envp, num_envp, &i, buffer, buffer_size,
+			       &length, "PHYSDEVPATH=%s", path);
 		kfree(path);
 
 		if (dev->bus)
-			add_hotplug_env_var(envp, num_envp, &i,
-					    buffer, buffer_size, &length,
-					    "PHYSDEVBUS=%s", dev->bus->name);
+			add_uevent_var(envp, num_envp, &i,
+				       buffer, buffer_size, &length,
+				       "PHYSDEVBUS=%s", dev->bus->name);
 <