Merge branch 'driver-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6
* 'driver-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6: driver core: Document that device_rename() is only for networking sysfs: remove useless test from sysfs_merge_group driver-core: merge private parts of class and bus driver core: fix whitespace in class_attr_string
This commit is contained in:
Linus Torvalds
Коммит
e54be894ea
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@ -1,31 +1,46 @@
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/**
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* struct bus_type_private - structure to hold the private to the driver core portions of the bus_type structure.
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* struct subsys_private - structure to hold the private to the driver core portions of the bus_type/class structure.
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*
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* @subsys - the struct kset that defines this bus. This is the main kobject
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* @drivers_kset - the list of drivers associated with this bus
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* @devices_kset - the list of devices associated with this bus
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* @subsys - the struct kset that defines this subsystem
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* @devices_kset - the list of devices associated
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*
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* @drivers_kset - the list of drivers associated
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* @klist_devices - the klist to iterate over the @devices_kset
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* @klist_drivers - the klist to iterate over the @drivers_kset
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* @bus_notifier - the bus notifier list for anything that cares about things
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* on this bus.
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* on this bus.
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* @bus - pointer back to the struct bus_type that this structure is associated
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* with.
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* with.
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*
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* @class_interfaces - list of class_interfaces associated
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* @glue_dirs - "glue" directory to put in-between the parent device to
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* avoid namespace conflicts
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* @class_mutex - mutex to protect the children, devices, and interfaces lists.
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* @class - pointer back to the struct class that this structure is associated
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* with.
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*
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* This structure is the one that is the actual kobject allowing struct
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* bus_type to be statically allocated safely. Nothing outside of the driver
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* core should ever touch these fields.
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* bus_type/class to be statically allocated safely. Nothing outside of the
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* driver core should ever touch these fields.
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*/
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struct bus_type_private {
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struct subsys_private {
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struct kset subsys;
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struct kset *drivers_kset;
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struct kset *devices_kset;
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struct kset *drivers_kset;
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struct klist klist_devices;
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struct klist klist_drivers;
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struct blocking_notifier_head bus_notifier;
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unsigned int drivers_autoprobe:1;
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struct bus_type *bus;
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struct list_head class_interfaces;
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struct kset glue_dirs;
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struct mutex class_mutex;
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struct class *class;
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};
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#define to_subsys_private(obj) container_of(obj, struct subsys_private, subsys.kobj)
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struct driver_private {
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struct kobject kobj;
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@ -36,33 +51,6 @@ struct driver_private {
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};
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#define to_driver(obj) container_of(obj, struct driver_private, kobj)
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/**
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* struct class_private - structure to hold the private to the driver core portions of the class structure.
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*
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* @class_subsys - the struct kset that defines this class. This is the main kobject
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* @class_devices - list of devices associated with this class
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* @class_interfaces - list of class_interfaces associated with this class
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* @class_dirs - "glue" directory for virtual devices associated with this class
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* @class_mutex - mutex to protect the children, devices, and interfaces lists.
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* @class - pointer back to the struct class that this structure is associated
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* with.
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*
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* This structure is the one that is the actual kobject allowing struct
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* class to be statically allocated safely. Nothing outside of the driver
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* core should ever touch these fields.
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*/
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struct class_private {
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struct kset class_subsys;
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struct klist class_devices;
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struct list_head class_interfaces;
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struct kset class_dirs;
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struct mutex class_mutex;
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struct class *class;
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};
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#define to_class(obj) \
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container_of(obj, struct class_private, class_subsys.kobj)
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/**
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* struct device_private - structure to hold the private to the driver core portions of the device structure.
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*
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@ -20,7 +20,6 @@
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#include "power/power.h"
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#define to_bus_attr(_attr) container_of(_attr, struct bus_attribute, attr)
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#define to_bus(obj) container_of(obj, struct bus_type_private, subsys.kobj)
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/*
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* sysfs bindings for drivers
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@ -96,11 +95,11 @@ static ssize_t bus_attr_show(struct kobject *kobj, struct attribute *attr,
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char *buf)
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{
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struct bus_attribute *bus_attr = to_bus_attr(attr);
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struct bus_type_private *bus_priv = to_bus(kobj);
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struct subsys_private *subsys_priv = to_subsys_private(kobj);
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ssize_t ret = 0;
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if (bus_attr->show)
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ret = bus_attr->show(bus_priv->bus, buf);
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ret = bus_attr->show(subsys_priv->bus, buf);
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return ret;
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}
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@ -108,11 +107,11 @@ static ssize_t bus_attr_store(struct kobject *kobj, struct attribute *attr,
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const char *buf, size_t count)
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{
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struct bus_attribute *bus_attr = to_bus_attr(attr);
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struct bus_type_private *bus_priv = to_bus(kobj);
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struct subsys_private *subsys_priv = to_subsys_private(kobj);
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ssize_t ret = 0;
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if (bus_attr->store)
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ret = bus_attr->store(bus_priv->bus, buf, count);
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ret = bus_attr->store(subsys_priv->bus, buf, count);
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return ret;
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}
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@ -858,9 +857,9 @@ static BUS_ATTR(uevent, S_IWUSR, NULL, bus_uevent_store);
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int bus_register(struct bus_type *bus)
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{
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int retval;
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struct bus_type_private *priv;
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struct subsys_private *priv;
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priv = kzalloc(sizeof(struct bus_type_private), GFP_KERNEL);
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priv = kzalloc(sizeof(struct subsys_private), GFP_KERNEL);
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if (!priv)
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return -ENOMEM;
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@ -27,7 +27,7 @@ static ssize_t class_attr_show(struct kobject *kobj, struct attribute *attr,
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char *buf)
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{
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struct class_attribute *class_attr = to_class_attr(attr);
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struct class_private *cp = to_class(kobj);
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struct subsys_private *cp = to_subsys_private(kobj);
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ssize_t ret = -EIO;
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if (class_attr->show)
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@ -39,7 +39,7 @@ static ssize_t class_attr_store(struct kobject *kobj, struct attribute *attr,
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const char *buf, size_t count)
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{
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struct class_attribute *class_attr = to_class_attr(attr);
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struct class_private *cp = to_class(kobj);
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struct subsys_private *cp = to_subsys_private(kobj);
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ssize_t ret = -EIO;
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if (class_attr->store)
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@ -49,7 +49,7 @@ static ssize_t class_attr_store(struct kobject *kobj, struct attribute *attr,
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static void class_release(struct kobject *kobj)
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{
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struct class_private *cp = to_class(kobj);
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struct subsys_private *cp = to_subsys_private(kobj);
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struct class *class = cp->class;
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pr_debug("class '%s': release.\n", class->name);
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@ -65,7 +65,7 @@ static void class_release(struct kobject *kobj)
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static const struct kobj_ns_type_operations *class_child_ns_type(struct kobject *kobj)
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{
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struct class_private *cp = to_class(kobj);
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struct subsys_private *cp = to_subsys_private(kobj);
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struct class *class = cp->class;
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return class->ns_type;
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@ -82,7 +82,7 @@ static struct kobj_type class_ktype = {
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.child_ns_type = class_child_ns_type,
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};
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/* Hotplug events for classes go to the class class_subsys */
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/* Hotplug events for classes go to the class subsys */
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static struct kset *class_kset;
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@ -90,7 +90,7 @@ int class_create_file(struct class *cls, const struct class_attribute *attr)
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{
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int error;
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if (cls)
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error = sysfs_create_file(&cls->p->class_subsys.kobj,
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error = sysfs_create_file(&cls->p->subsys.kobj,
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&attr->attr);
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else
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error = -EINVAL;
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@ -100,20 +100,20 @@ int class_create_file(struct class *cls, const struct class_attribute *attr)
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void class_remove_file(struct class *cls, const struct class_attribute *attr)
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{
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if (cls)
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sysfs_remove_file(&cls->p->class_subsys.kobj, &attr->attr);
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sysfs_remove_file(&cls->p->subsys.kobj, &attr->attr);
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}
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static struct class *class_get(struct class *cls)
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{
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if (cls)
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kset_get(&cls->p->class_subsys);
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kset_get(&cls->p->subsys);
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return cls;
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}
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static void class_put(struct class *cls)
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{
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if (cls)
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kset_put(&cls->p->class_subsys);
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kset_put(&cls->p->subsys);
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}
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static int add_class_attrs(struct class *cls)
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@ -162,7 +162,7 @@ static void klist_class_dev_put(struct klist_node *n)
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int __class_register(struct class *cls, struct lock_class_key *key)
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{
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struct class_private *cp;
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struct subsys_private *cp;
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int error;
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pr_debug("device class '%s': registering\n", cls->name);
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@ -170,11 +170,11 @@ int __class_register(struct class *cls, struct lock_class_key *key)
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cp = kzalloc(sizeof(*cp), GFP_KERNEL);
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if (!cp)
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return -ENOMEM;
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klist_init(&cp->class_devices, klist_class_dev_get, klist_class_dev_put);
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klist_init(&cp->klist_devices, klist_class_dev_get, klist_class_dev_put);
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INIT_LIST_HEAD(&cp->class_interfaces);
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kset_init(&cp->class_dirs);
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kset_init(&cp->glue_dirs);
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__mutex_init(&cp->class_mutex, "struct class mutex", key);
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error = kobject_set_name(&cp->class_subsys.kobj, "%s", cls->name);
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error = kobject_set_name(&cp->subsys.kobj, "%s", cls->name);
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if (error) {
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kfree(cp);
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return error;
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@ -187,15 +187,15 @@ int __class_register(struct class *cls, struct lock_class_key *key)
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#if defined(CONFIG_BLOCK)
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/* let the block class directory show up in the root of sysfs */
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if (!sysfs_deprecated || cls != &block_class)
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cp->class_subsys.kobj.kset = class_kset;
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cp->subsys.kobj.kset = class_kset;
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#else
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cp->class_subsys.kobj.kset = class_kset;
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cp->subsys.kobj.kset = class_kset;
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#endif
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cp->class_subsys.kobj.ktype = &class_ktype;
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cp->subsys.kobj.ktype = &class_ktype;
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cp->class = cls;
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cls->p = cp;
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error = kset_register(&cp->class_subsys);
|
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error = kset_register(&cp->subsys);
|
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if (error) {
|
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kfree(cp);
|
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return error;
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|
|
@ -210,7 +210,7 @@ void class_unregister(struct class *cls)
|
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{
|
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pr_debug("device class '%s': unregistering\n", cls->name);
|
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remove_class_attrs(cls);
|
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kset_unregister(&cls->p->class_subsys);
|
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kset_unregister(&cls->p->subsys);
|
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}
|
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|
||||
static void class_create_release(struct class *cls)
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|
|
@ -295,7 +295,7 @@ void class_dev_iter_init(struct class_dev_iter *iter, struct class *class,
|
|||
|
||||
if (start)
|
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start_knode = &start->knode_class;
|
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klist_iter_init_node(&class->p->class_devices, &iter->ki, start_knode);
|
||||
klist_iter_init_node(&class->p->klist_devices, &iter->ki, start_knode);
|
||||
iter->type = type;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(class_dev_iter_init);
|
||||
|
|
@ -482,8 +482,8 @@ void class_interface_unregister(struct class_interface *class_intf)
|
|||
class_put(parent);
|
||||
}
|
||||
|
||||
ssize_t show_class_attr_string(struct class *class, struct class_attribute *attr,
|
||||
char *buf)
|
||||
ssize_t show_class_attr_string(struct class *class,
|
||||
struct class_attribute *attr, char *buf)
|
||||
{
|
||||
struct class_attribute_string *cs;
|
||||
cs = container_of(attr, struct class_attribute_string, attr);
|
||||
|
|
|
|||
|
|
@ -647,7 +647,7 @@ class_dir_create_and_add(struct class *class, struct kobject *parent_kobj)
|
|||
dir->class = class;
|
||||
kobject_init(&dir->kobj, &class_dir_ktype);
|
||||
|
||||
dir->kobj.kset = &class->p->class_dirs;
|
||||
dir->kobj.kset = &class->p->glue_dirs;
|
||||
|
||||
retval = kobject_add(&dir->kobj, parent_kobj, "%s", class->name);
|
||||
if (retval < 0) {
|
||||
|
|
@ -672,7 +672,7 @@ static struct kobject *get_device_parent(struct device *dev,
|
|||
if (sysfs_deprecated && dev->class == &block_class) {
|
||||
if (parent && parent->class == &block_class)
|
||||
return &parent->kobj;
|
||||
return &block_class.p->class_subsys.kobj;
|
||||
return &block_class.p->subsys.kobj;
|
||||
}
|
||||
#endif
|
||||
|
||||
|
|
@ -691,13 +691,13 @@ static struct kobject *get_device_parent(struct device *dev,
|
|||
mutex_lock(&gdp_mutex);
|
||||
|
||||
/* find our class-directory at the parent and reference it */
|
||||
spin_lock(&dev->class->p->class_dirs.list_lock);
|
||||
list_for_each_entry(k, &dev->class->p->class_dirs.list, entry)
|
||||
spin_lock(&dev->class->p->glue_dirs.list_lock);
|
||||
list_for_each_entry(k, &dev->class->p->glue_dirs.list, entry)
|
||||
if (k->parent == parent_kobj) {
|
||||
kobj = kobject_get(k);
|
||||
break;
|
||||
}
|
||||
spin_unlock(&dev->class->p->class_dirs.list_lock);
|
||||
spin_unlock(&dev->class->p->glue_dirs.list_lock);
|
||||
if (kobj) {
|
||||
mutex_unlock(&gdp_mutex);
|
||||
return kobj;
|
||||
|
|
@ -719,7 +719,7 @@ static void cleanup_glue_dir(struct device *dev, struct kobject *glue_dir)
|
|||
{
|
||||
/* see if we live in a "glue" directory */
|
||||
if (!glue_dir || !dev->class ||
|
||||
glue_dir->kset != &dev->class->p->class_dirs)
|
||||
glue_dir->kset != &dev->class->p->glue_dirs)
|
||||
return;
|
||||
|
||||
kobject_put(glue_dir);
|
||||
|
|
@ -746,7 +746,7 @@ static int device_add_class_symlinks(struct device *dev)
|
|||
return 0;
|
||||
|
||||
error = sysfs_create_link(&dev->kobj,
|
||||
&dev->class->p->class_subsys.kobj,
|
||||
&dev->class->p->subsys.kobj,
|
||||
"subsystem");
|
||||
if (error)
|
||||
goto out;
|
||||
|
|
@ -765,7 +765,7 @@ static int device_add_class_symlinks(struct device *dev)
|
|||
#endif
|
||||
|
||||
/* link in the class directory pointing to the device */
|
||||
error = sysfs_create_link(&dev->class->p->class_subsys.kobj,
|
||||
error = sysfs_create_link(&dev->class->p->subsys.kobj,
|
||||
&dev->kobj, dev_name(dev));
|
||||
if (error)
|
||||
goto out_device;
|
||||
|
|
@ -793,7 +793,7 @@ static void device_remove_class_symlinks(struct device *dev)
|
|||
if (sysfs_deprecated && dev->class == &block_class)
|
||||
return;
|
||||
#endif
|
||||
sysfs_delete_link(&dev->class->p->class_subsys.kobj, &dev->kobj, dev_name(dev));
|
||||
sysfs_delete_link(&dev->class->p->subsys.kobj, &dev->kobj, dev_name(dev));
|
||||
}
|
||||
|
||||
/**
|
||||
|
|
@ -984,7 +984,7 @@ int device_add(struct device *dev)
|
|||
mutex_lock(&dev->class->p->class_mutex);
|
||||
/* tie the class to the device */
|
||||
klist_add_tail(&dev->knode_class,
|
||||
&dev->class->p->class_devices);
|
||||
&dev->class->p->klist_devices);
|
||||
|
||||
/* notify any interfaces that the device is here */
|
||||
list_for_each_entry(class_intf,
|
||||
|
|
@ -1550,6 +1550,8 @@ EXPORT_SYMBOL_GPL(device_destroy);
|
|||
* exclusion between two different calls of device_rename
|
||||
* on the same device to ensure that new_name is valid and
|
||||
* won't conflict with other devices.
|
||||
*
|
||||
* "Never use this function, bad things will happen" - gregkh
|
||||
*/
|
||||
int device_rename(struct device *dev, const char *new_name)
|
||||
{
|
||||
|
|
@ -1572,7 +1574,7 @@ int device_rename(struct device *dev, const char *new_name)
|
|||
}
|
||||
|
||||
if (dev->class) {
|
||||
error = sysfs_rename_link(&dev->class->p->class_subsys.kobj,
|
||||
error = sysfs_rename_link(&dev->class->p->subsys.kobj,
|
||||
&dev->kobj, old_device_name, new_name);
|
||||
if (error)
|
||||
goto out;
|
||||
|
|
|
|||
|
|
@ -165,10 +165,7 @@ int sysfs_merge_group(struct kobject *kobj,
|
|||
struct attribute *const *attr;
|
||||
int i;
|
||||
|
||||
if (grp)
|
||||
dir_sd = sysfs_get_dirent(kobj->sd, NULL, grp->name);
|
||||
else
|
||||
dir_sd = sysfs_get(kobj->sd);
|
||||
dir_sd = sysfs_get_dirent(kobj->sd, NULL, grp->name);
|
||||
if (!dir_sd)
|
||||
return -ENOENT;
|
||||
|
||||
|
|
@ -195,10 +192,7 @@ void sysfs_unmerge_group(struct kobject *kobj,
|
|||
struct sysfs_dirent *dir_sd;
|
||||
struct attribute *const *attr;
|
||||
|
||||
if (grp)
|
||||
dir_sd = sysfs_get_dirent(kobj->sd, NULL, grp->name);
|
||||
else
|
||||
dir_sd = sysfs_get(kobj->sd);
|
||||
dir_sd = sysfs_get_dirent(kobj->sd, NULL, grp->name);
|
||||
if (dir_sd) {
|
||||
for (attr = grp->attrs; *attr; ++attr)
|
||||
sysfs_hash_and_remove(dir_sd, NULL, (*attr)->name);
|
||||
|
|
|
|||
|
|
@ -30,9 +30,8 @@ struct device_private;
|
|||
struct device_driver;
|
||||
struct driver_private;
|
||||
struct class;
|
||||
struct class_private;
|
||||
struct subsys_private;
|
||||
struct bus_type;
|
||||
struct bus_type_private;
|
||||
struct device_node;
|
||||
|
||||
struct bus_attribute {
|
||||
|
|
@ -65,7 +64,7 @@ struct bus_type {
|
|||
|
||||
const struct dev_pm_ops *pm;
|
||||
|
||||
struct bus_type_private *p;
|
||||
struct subsys_private *p;
|
||||
};
|
||||
|
||||
extern int __must_check bus_register(struct bus_type *bus);
|
||||
|
|
@ -214,7 +213,7 @@ struct class {
|
|||
|
||||
const struct dev_pm_ops *pm;
|
||||
|
||||
struct class_private *p;
|
||||
struct subsys_private *p;
|
||||
};
|
||||
|
||||
struct class_dev_iter {
|
||||
|
|
|
|||
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