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

* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/driver-2.6:
  Revert "Driver core: let request_module() send a /sys/modules/kmod/-uevent"
  Driver core: fix error by cleanup up symlinks properly
  make kernel/kmod.c:kmod_mk static
  power management: fix struct layout and docs
  power management: no valid states w/o pm_ops
  Driver core: more fallout from class_device changes for pcmcia
  sysfs: move struct sysfs_dirent to private header
  driver core: refcounting fix
  Driver core: remove class_device_rename

17 files changed, 103 insertions, 205 deletions

diff --git a/drivers/base/class.c b/drivers/base/class.c
index 1417e5cd4c6..d5968128be2 100644
--- a/drivers/base/class.c
+++ b/drivers/base/class.c
@@ -840,48 +840,6 @@ void class_device_destroy(struct class *cls, dev_t devt)
 		class_device_unregister(class_dev);
 }
 
-int class_device_rename(struct class_device *class_dev, char *new_name)
-{
-	int error = 0;
-	char *old_class_name = NULL, *new_class_name = NULL;
-
-	class_dev = class_device_get(class_dev);
-	if (!class_dev)
-		return -EINVAL;
-
-	pr_debug("CLASS: renaming '%s' to '%s'\n", class_dev->class_id,
-		 new_name);
-
-#ifdef CONFIG_SYSFS_DEPRECATED
-	if (class_dev->dev)
-		old_class_name = make_class_name(class_dev->class->name,
-						 &class_dev->kobj);
-#endif
-
-	strlcpy(class_dev->class_id, new_name, KOBJ_NAME_LEN);
-
-	error = kobject_rename(&class_dev->kobj, new_name);
-
-#ifdef CONFIG_SYSFS_DEPRECATED
-	if (class_dev->dev) {
-		new_class_name = make_class_name(class_dev->class->name,
-						 &class_dev->kobj);
-		if (new_class_name)
-			sysfs_create_link(&class_dev->dev->kobj,
-					  &class_dev->kobj, new_class_name);
-		if (old_class_name)
-			sysfs_remove_link(&class_dev->dev->kobj,
-						old_class_name);
-	}
-#endif
-	class_device_put(class_dev);
-
-	kfree(old_class_name);
-	kfree(new_class_name);
-
-	return error;
-}
-
 struct class_device * class_device_get(struct class_device *class_dev)
 {
 	if (class_dev)
diff --git a/drivers/base/core.c b/drivers/base/core.c
index d04fd33dcd9..cf2a398aaaa 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -637,12 +637,41 @@ int device_add(struct device *dev)
 					     BUS_NOTIFY_DEL_DEVICE, dev);
 	device_remove_groups(dev);
  GroupError:
- 	device_remove_attrs(dev);
+	device_remove_attrs(dev);
  AttrsError:
 	if (dev->devt_attr) {
 		device_remove_file(dev, dev->devt_attr);
 		kfree(dev->devt_attr);
 	}
+
+	if (dev->class) {
+		sysfs_remove_link(&dev->kobj, "subsystem");
+		/* If this is not a "fake" compatible device, remove the
+		 * symlink from the class to the device. */
+		if (dev->kobj.parent != &dev->class->subsys.kset.kobj)
+			sysfs_remove_link(&dev->class->subsys.kset.kobj,
+					  dev->bus_id);
+#ifdef CONFIG_SYSFS_DEPRECATED
+		if (parent) {
+			char *class_name = make_class_name(dev->class->name,
+							   &dev->kobj);
+			if (class_name)
+				sysfs_remove_link(&dev->parent->kobj,
+						  class_name);
+			kfree(class_name);
+			sysfs_remove_link(&dev->kobj, "device");
+		}
+#endif
+
+		down(&dev->class->sem);
+		/* notify any interfaces that the device is now gone */
+		list_for_each_entry(class_intf, &dev->class->interfaces, node)
+			if (class_intf->remove_dev)
+				class_intf->remove_dev(dev, class_intf);
+		/* remove the device from the class list */
+		list_del_init(&dev->node);
+		up(&dev->class->sem);
+	}
  ueventattrError:
 	device_remove_file(dev, &dev->uevent_attr);
  attrError:
diff --git a/drivers/pcmcia/hd64465_ss.c b/drivers/pcmcia/hd64465_ss.c
index caca0dc9d30..f2e810f53c8 100644
--- a/drivers/pcmcia/hd64465_ss.c
+++ b/drivers/pcmcia/hd64465_ss.c
@@ -907,7 +907,7 @@ static int __init init_hs(void)
 
 	for (i=0; i<HS_MAX_SOCKETS; i++) {
 		unsigned int ret;
-		hs_sockets[i].socket.dev.dev = &hd64465_device.dev;		
+		hs_sockets[i].socket.dev.parent = &hd64465_device.dev;
 		hs_sockets[i].number = i;
 		ret = pcmcia_register_socket(&hs_sockets[i].socket);
 		if (ret && i)
diff --git a/drivers/pcmcia/m32r_cfc.c b/drivers/pcmcia/m32r_cfc.c
index e4a94108aab..91da15b5a81 100644
--- a/drivers/pcmcia/m32r_cfc.c
+++ b/drivers/pcmcia/m32r_cfc.c
@@ -760,7 +760,7 @@ static int __init init_m32r_pcc(void)
 	/* Set up interrupt handler(s) */
 
 	for (i = 0 ; i < pcc_sockets ; i++) {
-		socket[i].socket.dev.dev = &pcc_device.dev;
+		socket[i].socket.dev.parent = &pcc_device.dev;
 		socket[i].socket.ops = &pcc_operations;
 		socket[i].socket.resource_ops = &pccard_nonstatic_ops;
 		socket[i].socket.owner = THIS_MODULE;
diff --git a/drivers/pcmcia/m8xx_pcmcia.c b/drivers/pcmcia/m8xx_pcmcia.c
index d059c919617..9721ed7bf50 100644
--- a/drivers/pcmcia/m8xx_pcmcia.c
+++ b/drivers/pcmcia/m8xx_pcmcia.c
@@ -1321,7 +1321,7 @@ static int __init m8xx_init(void)
 		socket[i].socket.ops = &m8xx_services;
 		socket[i].socket.resource_ops = &pccard_iodyn_ops;
 		socket[i].socket.cb_dev = NULL;
-		socket[i].socket.dev.dev = &m8xx_device.dev;
+		socket[i].socket.dev.parent = &m8xx_device.dev;
 	}
 
 	for (i = 0; i < PCMCIA_SOCKETS_NO; i++)
diff --git a/drivers/pcmcia/omap_cf.c b/drivers/pcmcia/omap_cf.c
index 76f7cbc62a8..d77f75129f8 100644
--- a/drivers/pcmcia/omap_cf.c
+++ b/drivers/pcmcia/omap_cf.c
@@ -291,7 +291,7 @@ static int __devinit omap_cf_probe(struct device *dev)
 		omap_cf_present() ? "present" : "(not present)");
 
 	cf->socket.owner = THIS_MODULE;
-	cf->socket.dev.dev = dev;
+	cf->socket.dev.parent = dev;
 	cf->socket.ops = &omap_cf_ops;
 	cf->socket.resource_ops = &pccard_static_ops;
 	cf->socket.features = SS_CAP_PCCARD | SS_CAP_STATIC_MAP
diff --git a/drivers/pcmcia/rsrc_mgr.c b/drivers/pcmcia/rsrc_mgr.c
index 81dfc2cac2b..ce2226273aa 100644
--- a/drivers/pcmcia/rsrc_mgr.c
+++ b/drivers/pcmcia/rsrc_mgr.c
@@ -232,7 +232,7 @@ static struct resource *iodyn_find_io_region(unsigned long base, int num,
 		unsigned long align, struct pcmcia_socket *s)
 {
 	struct resource *res = make_resource(0, num, IORESOURCE_IO,
-					     s->dev.class_id);
+					     s->dev.bus_id);
 	struct pcmcia_align_data data;
 	unsigned long min = base;
 	int ret;
diff --git a/drivers/pcmcia/vrc4171_card.c b/drivers/pcmcia/vrc4171_card.c
index 206e26c9180..eee2f1cb213 100644
--- a/drivers/pcmcia/vrc4171_card.c
+++ b/drivers/pcmcia/vrc4171_card.c
@@ -596,7 +596,7 @@ static int __devinit vrc4171_add_sockets(void)
 		}
 
 		sprintf(socket->name, "NEC VRC4171 Card Slot %1c", 'A' + slot);
-		socket->pcmcia_socket.dev.dev = &vrc4171_card_device.dev;
+		socket->pcmcia_socket.dev.parent = &vrc4171_card_device.dev;
 		socket->pcmcia_socket.ops = &vrc4171_pccard_operations;
 		socket->pcmcia_socket.owner = THIS_MODULE;
 
diff --git a/fs/sysfs/sysfs.h b/fs/sysfs/sysfs.h
index d976b000554..a77c57e5a6d 100644
--- a/fs/sysfs/sysfs.h
+++ b/fs/sysfs/sysfs.h
@@ -1,3 +1,14 @@
+struct sysfs_dirent {
+	atomic_t		s_count;
+	struct list_head	s_sibling;
+	struct list_head	s_children;
+	void 			* s_element;
+	int			s_type;
+	umode_t			s_mode;
+	struct dentry		* s_dentry;
+	struct iattr		* s_iattr;
+	atomic_t		s_event;
+};
 
 extern struct vfsmount * sysfs_mount;
 extern struct kmem_cache *sysfs_dir_cachep;
diff --git a/include/linux/device.h b/include/linux/device.h
index d1a3a27c398..39a3199a826 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -294,8 +294,6 @@ extern void class_device_initialize(struct class_device *);
 extern int __must_check class_device_add(struct class_device *);
 extern void class_device_del(struct class_device *);
 
-extern int class_device_rename(struct class_device *, char *);
-
 extern struct class_device * class_device_get(struct class_device *);
 extern void class_device_put(struct class_device *);
 
diff --git a/include/linux/kmod.h b/include/linux/kmod.h
index cc8e674ae27..10f505c8431 100644
--- a/include/linux/kmod.h
+++ b/include/linux/kmod.h
@@ -28,10 +28,8 @@
 #ifdef CONFIG_KMOD
 /* modprobe exit status on success, -ve on error.  Return value
  * usually useless though. */
-extern void kmod_sysfs_init(void);
 extern int request_module(const char * name, ...) __attribute__ ((format (printf, 1, 2)));
 #else
-static inline void kmod_sysfs_init(void) {};
 static inline int request_module(const char * name, ...) { return -ENOSYS; }
 #endif
 
diff --git a/include/linux/pm.h b/include/linux/pm.h
index 070394e846d..21db05ac7c0 100644
--- a/include/linux/pm.h
+++ b/include/linux/pm.h
@@ -120,15 +120,48 @@ typedef int __bitwise suspend_disk_method_t;
 #define	PM_DISK_TESTPROC	((__force suspend_disk_method_t) 6)
 #define	PM_DISK_MAX		((__force suspend_disk_method_t) 7)
 
+/**
+ * struct pm_ops - Callbacks for managing platform dependent suspend states.
+ * @valid: Callback to determine whether the given state can be entered.
+ * 	If %CONFIG_SOFTWARE_SUSPEND is set then %PM_SUSPEND_DISK is
+ *	always valid and never passed to this call.
+ *	If not assigned, all suspend states are advertised as valid
+ *	in /sys/power/state (but can still be rejected by prepare or enter.)
+ *
+ * @prepare: Prepare the platform for the given suspend state. Can return a
+ *	negative error code if necessary.
+ *
+ * @enter: Enter the given suspend state, must be assigned. Can return a
+ *	negative error code if necessary.
+ *
+ * @finish: Called when the system has left the given state and all devices
+ *	are resumed. The return value is ignored.
+ *
+ * @pm_disk_mode: Set to the disk method that the user should be able to
+ *	configure for suspend-to-disk. Since %PM_DISK_SHUTDOWN,
+ *	%PM_DISK_REBOOT, %PM_DISK_TEST and %PM_DISK_TESTPROC
+ *	are always allowed, currently only %PM_DISK_PLATFORM
+ *	makes sense. If the user then choses %PM_DISK_PLATFORM,
+ *	the @prepare call will be called before suspending to disk
+ *	(if present), the @enter call should be present and will
+ *	be called after all state has been saved and the machine
+ *	is ready to be shut down/suspended/..., and the @finish
+ *	callback is called after state has been restored. All
+ *	these calls are called with %PM_SUSPEND_DISK as the state.
+ */
 struct pm_ops {
-	suspend_disk_method_t pm_disk_mode;
 	int (*valid)(suspend_state_t state);
 	int (*prepare)(suspend_state_t state);
 	int (*enter)(suspend_state_t state);
 	int (*finish)(suspend_state_t state);
+	suspend_disk_method_t pm_disk_mode;
 };
 
-extern void pm_set_ops(struct pm_ops *);
+/**
+ * pm_set_ops - set platform dependent power management ops
+ * @pm_ops: The new power management operations to set.
+ */
+extern void pm_set_ops(struct pm_ops *pm_ops);
 extern struct pm_ops *pm_ops;
 extern int pm_suspend(suspend_state_t state);
 
diff --git a/include/linux/sysfs.h b/include/linux/sysfs.h
index f45450b295c..21805b500aa 100644
--- a/include/linux/sysfs.h
+++ b/include/linux/sysfs.h
@@ -17,6 +17,7 @@
 struct kobject;
 struct module;
 struct nameidata;
+struct dentry;
 
 struct attribute {
 	const char		* name;
@@ -68,18 +69,6 @@ struct sysfs_ops {
 	ssize_t	(*store)(struct kobject *,struct attribute *,const char *, size_t);
 };
 
-struct sysfs_dirent {
-	atomic_t		s_count;
-	struct list_head	s_sibling;
-	struct list_head	s_children;
-	void 			* s_element;
-	int			s_type;
-	umode_t			s_mode;
-	struct dentry		* s_dentry;
-	struct iattr		* s_iattr;
-	atomic_t		s_event;
-};
-
 #define SYSFS_ROOT		0x0001
 #define SYSFS_DIR		0x0002
 #define SYSFS_KOBJ_ATTR 	0x0004
diff --git a/kernel/kmod.c b/kernel/kmod.c
index 9f923f8ce6a..796276141e5 100644
--- a/kernel/kmod.c
+++ b/kernel/kmod.c
@@ -36,8 +36,6 @@
 #include <linux/resource.h>
 #include <asm/uaccess.h>
 
-extern int delete_module(const char *name, unsigned int flags);
-
 extern int max_threads;
 
 static struct workqueue_struct *khelper_wq;
@@ -48,7 +46,6 @@ static struct workqueue_struct *khelper_wq;
 	modprobe_path is set via /proc/sys.
 */
 char modprobe_path[KMOD_PATH_LEN] = "/sbin/modprobe";
-struct module_kobject kmod_mk;
 
 /**
  * request_module - try to load a kernel module
@@ -78,11 +75,6 @@ int request_module(const char *fmt, ...)
 	static atomic_t kmod_concurrent = ATOMIC_INIT(0);
 #define MAX_KMOD_CONCURRENT 50	/* Completely arbitrary value - KAO */
 	static int kmod_loop_msg;
-	char modalias[16 + MODULE_NAME_LEN] = "MODALIAS=";
-	char *uevent_envp[2] = {
-		modalias,
-		NULL
-	};
 
 	va_start(args, fmt);
 	ret = vsnprintf(module_name, MODULE_NAME_LEN, fmt, args);
@@ -90,12 +82,6 @@ int request_module(const char *fmt, ...)
 	if (ret >= MODULE_NAME_LEN)
 		return -ENAMETOOLONG;
 
-	strcpy(&modalias[strlen("MODALIAS=")], module_name);
-	kobject_uevent_env(&kmod_mk.kobj, KOBJ_CHANGE, uevent_envp);
-
-	if (modprobe_path[0] == '\0')
-		goto out;
-
 	/* If modprobe needs a service that is in a module, we get a recursive
 	 * loop.  Limit the number of running kmod threads to max_threads/2 or
 	 * MAX_KMOD_CONCURRENT, whichever is the smaller.  A cleaner method
@@ -122,115 +108,9 @@ int request_module(const char *fmt, ...)
 
 	ret = call_usermodehelper(modprobe_path, argv, envp, 1);
 	atomic_dec(&kmod_concurrent);
-out:
 	return ret;
 }
 EXPORT_SYMBOL(request_module);
-
-static ssize_t store_mod_request(struct module_attribute *mattr,
-				 struct module *mod,
-			      const char *buffer, size_t count)
-{
-	char name[MODULE_NAME_LEN];
-	int ret;
-
-	if (count < 1 || count+1 > MODULE_NAME_LEN)
-		return -EINVAL;
-	memcpy(name, buffer, count);
-	name[count] = '\0';
-	if (name[count-1] == '\n')
-		name[count-1] = '\0';
-
-	ret = request_module(name);
-	if (ret < 0)
-		return ret;
-	return count;
-}
-
-static struct module_attribute mod_request = {
-	.attr = { .name = "mod_request", .mode = S_IWUSR, .owner = THIS_MODULE },
-	.store = store_mod_request,
-};
-
-#ifdef CONFIG_MODULE_UNLOAD
-static ssize_t store_mod_unload(struct module_attribute *mattr,
-			    struct module *mod,
-			    const char *buffer, size_t count)
-{
-	char name[MODULE_NAME_LEN];
-	int ret;
-
-	if (count < 1 || count+1 > MODULE_NAME_LEN)
-		return -EINVAL;
-	memcpy(name, buffer, count);
-	name[count] = '\0';
-	if (name[count-1] == '\n')
-		name[count-1] = '\0';
-
-	ret = delete_module(name, O_NONBLOCK);
-	if (ret < 0)
-		return ret;
-	return count;
-}
-
-static struct module_attribute mod_unload = {
-	.attr = { .name = "mod_unload", .mode = S_IWUSR, .owner = THIS_MODULE },
-	.store = store_mod_unload,
-};
-#endif
-
-static ssize_t show_mod_request_helper(struct module_attribute *mattr,
-				       struct module *mod,
-				       char *buffer)
-{
-	return sprintf(buffer, "%s\n", modprobe_path);
-}
-
-static ssize_t store_mod_request_helper(struct module_attribute *mattr,
-					struct module *mod,
-					const char *buffer, size_t count)
-{
-	if (count < 1 || count+1 > KMOD_PATH_LEN)
-		return -EINVAL;
-	memcpy(modprobe_path, buffer, count);
-	modprobe_path[count] = '\0';
-	if (modprobe_path[count-1] == '\n')
-		modprobe_path[count-1] = '\0';
-	return count;
-}
-
-static struct module_attribute mod_request_helper = {
-	.attr = {
-		.name = "mod_request_helper",
-		.mode = S_IWUSR | S_IRUGO,
-		.owner = THIS_MODULE
-	},
-	.show = show_mod_request_helper,
-	.store = store_mod_request_helper,
-};
-
-void __init kmod_sysfs_init(void)
-{
-	int ret;
-
-	kmod_mk.mod = THIS_MODULE;
-	kobj_set_kset_s(&kmod_mk, module_subsys);
-	kobject_set_name(&kmod_mk.kobj, "kmod");
-	kobject_init(&kmod_mk.kobj);
-	ret = kobject_add(&kmod_mk.kobj);
-	if (ret < 0)
-		goto out;
-
-	ret = sysfs_create_file(&kmod_mk.kobj, &mod_request_helper.attr);
-	ret = sysfs_create_file(&kmod_mk.kobj, &mod_request.attr);
-#ifdef CONFIG_MODULE_UNLOAD
-	ret = sysfs_create_file(&kmod_mk.kobj, &mod_unload.attr);
-#endif
-
-	kobject_uevent(&kmod_mk.kobj, KOBJ_ADD);
-out:
-	return;
-}
 #endif /* CONFIG_KMOD */
 
 struct subprocess_info {
diff --git a/kernel/module.c b/kernel/module.c
index 8c25b1a04fa..f77e893e462 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -653,11 +653,20 @@ static void wait_for_zero_refcount(struct module *mod)
 	mutex_lock(&module_mutex);
 }
 
-int delete_module(const char *name, unsigned int flags)
+asmlinkage long
+sys_delete_module(const char __user *name_user, unsigned int flags)
 {
 	struct module *mod;
+	char name[MODULE_NAME_LEN];
 	int ret, forced = 0;
 
+	if (!capable(CAP_SYS_MODULE))
+		return -EPERM;
+
+	if (strncpy_from_user(name, name_user, MODULE_NAME_LEN-1) < 0)
+		return -EFAULT;
+	name[MODULE_NAME_LEN-1] = '\0';
+
 	if (mutex_lock_interruptible(&module_mutex) != 0)
 		return -EINTR;
 
@@ -718,21 +727,6 @@ int delete_module(const char *name, unsigned int flags)
 	return ret;
 }
 
-asmlinkage long
-sys_delete_module(const char __user *name_user, unsigned int flags)
-{
-	char name[MODULE_NAME_LEN];
-
-	if (!capable(CAP_SYS_MODULE))
-		return -EPERM;
-
-	if (strncpy_from_user(name, name_user, MODULE_NAME_LEN-1) < 0)
-		return -EFAULT;
-	name[MODULE_NAME_LEN-1] = '\0';
-
-	return delete_module(name, flags);
-}
-
 static void print_unload_info(struct seq_file *m, struct module *mod)
 {
 	struct module_use *use;
@@ -2425,6 +2419,12 @@ void module_remove_driver(struct device_driver *drv)
 			kfree(driver_name);
 		}
 	}
+	/*
+	 * Undo the additional reference we added in module_add_driver()
+	 * via kset_find_obj()
+	 */
+	if (drv->mod_name)
+		kobject_put(&drv->kobj);
 }
 EXPORT_SYMBOL(module_remove_driver);
 #endif
diff --git a/kernel/params.c b/kernel/params.c
index 7a751570b56..e265b13195b 100644
--- a/kernel/params.c
+++ b/kernel/params.c
@@ -707,7 +707,6 @@ static int __init param_sysfs_init(void)
 	}
 
 	param_sysfs_builtin();
-	kmod_sysfs_init();
 
 	return 0;
 }
diff --git a/kernel/power/main.c b/kernel/power/main.c
index e1c41312046..a064dfd8877 100644
--- a/kernel/power/main.c
+++ b/kernel/power/main.c
@@ -167,7 +167,10 @@ static inline int valid_state(suspend_state_t state)
 	if (state == PM_SUSPEND_DISK)
 		return 1;
 
-	if (pm_ops && pm_ops->valid && !pm_ops->valid(state))
+	/* all other states need lowlevel support and need to be
+	 * valid to the lowlevel implementation, no valid callback
+	 * implies that all are valid. */
+	if (!pm_ops || (pm_ops->valid && !pm_ops->valid(state)))
 		return 0;
 	return 1;
 }