diff options
Diffstat (limited to 'drivers/base/attribute_container.c')
| -rw-r--r-- | drivers/base/attribute_container.c | 139 |
1 files changed, 67 insertions, 72 deletions
diff --git a/drivers/base/attribute_container.c b/drivers/base/attribute_container.c index 2a7d7ae83e1..b84ca8f13f9 100644 --- a/drivers/base/attribute_container.c +++ b/drivers/base/attribute_container.c @@ -12,12 +12,12 @@ */ #include <linux/attribute_container.h> -#include <linux/init.h> #include <linux/device.h> #include <linux/kernel.h> #include <linux/slab.h> #include <linux/list.h> #include <linux/module.h> +#include <linux/mutex.h> #include "base.h" @@ -26,21 +26,21 @@ struct internal_container { struct klist_node node; struct attribute_container *cont; - struct class_device classdev; + struct device classdev; }; static void internal_container_klist_get(struct klist_node *n) { struct internal_container *ic = container_of(n, struct internal_container, node); - class_device_get(&ic->classdev); + get_device(&ic->classdev); } static void internal_container_klist_put(struct klist_node *n) { struct internal_container *ic = container_of(n, struct internal_container, node); - class_device_put(&ic->classdev); + put_device(&ic->classdev); } @@ -52,7 +52,7 @@ static void internal_container_klist_put(struct klist_node *n) * Returns the container associated with this classdev. */ struct attribute_container * -attribute_container_classdev_to_container(struct class_device *classdev) +attribute_container_classdev_to_container(struct device *classdev) { struct internal_container *ic = container_of(classdev, struct internal_container, classdev); @@ -60,9 +60,9 @@ attribute_container_classdev_to_container(struct class_device *classdev) } EXPORT_SYMBOL_GPL(attribute_container_classdev_to_container); -static struct list_head attribute_container_list; +static LIST_HEAD(attribute_container_list); -static DECLARE_MUTEX(attribute_container_mutex); +static DEFINE_MUTEX(attribute_container_mutex); /** * attribute_container_register - register an attribute container @@ -77,9 +77,9 @@ attribute_container_register(struct attribute_container *cont) klist_init(&cont->containers,internal_container_klist_get, internal_container_klist_put); - down(&attribute_container_mutex); + mutex_lock(&attribute_container_mutex); list_add_tail(&cont->node, &attribute_container_list); - up(&attribute_container_mutex); + mutex_unlock(&attribute_container_mutex); return 0; } @@ -94,7 +94,7 @@ int attribute_container_unregister(struct attribute_container *cont) { int retval = -EBUSY; - down(&attribute_container_mutex); + mutex_lock(&attribute_container_mutex); spin_lock(&cont->containers.k_lock); if (!list_empty(&cont->containers.k_list)) goto out; @@ -102,18 +102,18 @@ attribute_container_unregister(struct attribute_container *cont) list_del(&cont->node); out: spin_unlock(&cont->containers.k_lock); - up(&attribute_container_mutex); + mutex_unlock(&attribute_container_mutex); return retval; } EXPORT_SYMBOL_GPL(attribute_container_unregister); /* private function used as class release */ -static void attribute_container_release(struct class_device *classdev) +static void attribute_container_release(struct device *classdev) { struct internal_container *ic = container_of(classdev, struct internal_container, classdev); - struct device *dev = classdev->dev; + struct device *dev = classdev->parent; kfree(ic); put_device(dev); @@ -128,12 +128,12 @@ static void attribute_container_release(struct class_device *classdev) * This function allocates storage for the class device(s) to be * attached to dev (one for each matching attribute_container). If no * fn is provided, the code will simply register the class device via - * class_device_add. If a function is provided, it is expected to add + * device_add. If a function is provided, it is expected to add * the class device at the appropriate time. One of the things that * might be necessary is to allocate and initialise the classdev and * then add it a later time. To do this, call this routine for * allocation and initialisation and then use - * attribute_container_device_trigger() to call class_device_add() on + * attribute_container_device_trigger() to call device_add() on * it. Note: after this, the class device contains a reference to dev * which is not relinquished until the release of the classdev. */ @@ -141,11 +141,11 @@ void attribute_container_add_device(struct device *dev, int (*fn)(struct attribute_container *, struct device *, - struct class_device *)) + struct device *)) { struct attribute_container *cont; - down(&attribute_container_mutex); + mutex_lock(&attribute_container_mutex); list_for_each_entry(cont, &attribute_container_list, node) { struct internal_container *ic; @@ -157,23 +157,23 @@ attribute_container_add_device(struct device *dev, ic = kzalloc(sizeof(*ic), GFP_KERNEL); if (!ic) { - dev_printk(KERN_ERR, dev, "failed to allocate class container\n"); + dev_err(dev, "failed to allocate class container\n"); continue; } ic->cont = cont; - class_device_initialize(&ic->classdev); - ic->classdev.dev = get_device(dev); + device_initialize(&ic->classdev); + ic->classdev.parent = get_device(dev); ic->classdev.class = cont->class; - cont->class->release = attribute_container_release; - strcpy(ic->classdev.class_id, dev->bus_id); + cont->class->dev_release = attribute_container_release; + dev_set_name(&ic->classdev, "%s", dev_name(dev)); if (fn) fn(cont, dev, &ic->classdev); else attribute_container_add_class_device(&ic->classdev); klist_add_tail(&ic->node, &cont->containers); } - up(&attribute_container_mutex); + mutex_unlock(&attribute_container_mutex); } /* FIXME: can't break out of this unless klist_iter_exit is also @@ -194,24 +194,23 @@ attribute_container_add_device(struct device *dev, * @fn: A function to call to remove the device * * This routine triggers device removal. If fn is NULL, then it is - * simply done via class_device_unregister (note that if something + * simply done via device_unregister (note that if something * still has a reference to the classdev, then the memory occupied * will not be freed until the classdev is released). If you want a * two phase release: remove from visibility and then delete the * device, then you should use this routine with a fn that calls - * class_device_del() and then use - * attribute_container_device_trigger() to do the final put on the - * classdev. + * device_del() and then use attribute_container_device_trigger() + * to do the final put on the classdev. */ void attribute_container_remove_device(struct device *dev, void (*fn)(struct attribute_container *, struct device *, - struct class_device *)) + struct device *)) { struct attribute_container *cont; - down(&attribute_container_mutex); + mutex_lock(&attribute_container_mutex); list_for_each_entry(cont, &attribute_container_list, node) { struct internal_container *ic; struct klist_iter iter; @@ -223,20 +222,19 @@ attribute_container_remove_device(struct device *dev, continue; klist_for_each_entry(ic, &cont->containers, node, &iter) { - if (dev != ic->classdev.dev) + if (dev != ic->classdev.parent) continue; klist_del(&ic->node); if (fn) fn(cont, dev, &ic->classdev); else { attribute_container_remove_attrs(&ic->classdev); - class_device_unregister(&ic->classdev); + device_unregister(&ic->classdev); } } } - up(&attribute_container_mutex); + mutex_unlock(&attribute_container_mutex); } -EXPORT_SYMBOL_GPL(attribute_container_remove_device); /** * attribute_container_device_trigger - execute a trigger for each matching classdev @@ -252,11 +250,11 @@ void attribute_container_device_trigger(struct device *dev, int (*fn)(struct attribute_container *, struct device *, - struct class_device *)) + struct device *)) { struct attribute_container *cont; - down(&attribute_container_mutex); + mutex_lock(&attribute_container_mutex); list_for_each_entry(cont, &attribute_container_list, node) { struct internal_container *ic; struct klist_iter iter; @@ -270,13 +268,12 @@ attribute_container_device_trigger(struct device *dev, } klist_for_each_entry(ic, &cont->containers, node, &iter) { - if (dev == ic->classdev.dev) + if (dev == ic->classdev.parent) fn(cont, dev, &ic->classdev); } } - up(&attribute_container_mutex); + mutex_unlock(&attribute_container_mutex); } -EXPORT_SYMBOL_GPL(attribute_container_device_trigger); /** * attribute_container_trigger - trigger a function for each matching container @@ -297,14 +294,13 @@ attribute_container_trigger(struct device *dev, { struct attribute_container *cont; - down(&attribute_container_mutex); + mutex_lock(&attribute_container_mutex); list_for_each_entry(cont, &attribute_container_list, node) { if (cont->match(cont, dev)) fn(cont, dev); } - up(&attribute_container_mutex); + mutex_unlock(&attribute_container_mutex); } -EXPORT_SYMBOL_GPL(attribute_container_trigger); /** * attribute_container_add_attrs - add attributes @@ -315,44 +311,48 @@ EXPORT_SYMBOL_GPL(attribute_container_trigger); * attributes listed in the container */ int -attribute_container_add_attrs(struct class_device *classdev) +attribute_container_add_attrs(struct device *classdev) { struct attribute_container *cont = attribute_container_classdev_to_container(classdev); - struct class_device_attribute **attrs = cont->attrs; + struct device_attribute **attrs = cont->attrs; int i, error; - if (!attrs) + BUG_ON(attrs && cont->grp); + + if (!attrs && !cont->grp) return 0; + if (cont->grp) + return sysfs_create_group(&classdev->kobj, cont->grp); + for (i = 0; attrs[i]; i++) { - error = class_device_create_file(classdev, attrs[i]); + sysfs_attr_init(&attrs[i]->attr); + error = device_create_file(classdev, attrs[i]); if (error) return error; } return 0; } -EXPORT_SYMBOL_GPL(attribute_container_add_attrs); /** - * attribute_container_add_class_device - same function as class_device_add + * attribute_container_add_class_device - same function as device_add * * @classdev: the class device to add * - * This performs essentially the same function as class_device_add except for + * This performs essentially the same function as device_add except for * attribute containers, namely add the classdev to the system and then * create the attribute files */ int -attribute_container_add_class_device(struct class_device *classdev) +attribute_container_add_class_device(struct device *classdev) { - int error = class_device_add(classdev); + int error = device_add(classdev); if (error) return error; return attribute_container_add_attrs(classdev); } -EXPORT_SYMBOL_GPL(attribute_container_add_class_device); /** * attribute_container_add_class_device_adapter - simple adapter for triggers @@ -363,11 +363,10 @@ EXPORT_SYMBOL_GPL(attribute_container_add_class_device); int attribute_container_add_class_device_adapter(struct attribute_container *cont, struct device *dev, - struct class_device *classdev) + struct device *classdev) { return attribute_container_add_class_device(classdev); } -EXPORT_SYMBOL_GPL(attribute_container_add_class_device_adapter); /** * attribute_container_remove_attrs - remove any attribute files @@ -376,20 +375,24 @@ EXPORT_SYMBOL_GPL(attribute_container_add_class_device_adapter); * */ void -attribute_container_remove_attrs(struct class_device *classdev) +attribute_container_remove_attrs(struct device *classdev) { struct attribute_container *cont = attribute_container_classdev_to_container(classdev); - struct class_device_attribute **attrs = cont->attrs; + struct device_attribute **attrs = cont->attrs; int i; - if (!attrs) + if (!attrs && !cont->grp) return; + if (cont->grp) { + sysfs_remove_group(&classdev->kobj, cont->grp); + return ; + } + for (i = 0; attrs[i]; i++) - class_device_remove_file(classdev, attrs[i]); + device_remove_file(classdev, attrs[i]); } -EXPORT_SYMBOL_GPL(attribute_container_remove_attrs); /** * attribute_container_class_device_del - equivalent of class_device_del @@ -397,15 +400,14 @@ EXPORT_SYMBOL_GPL(attribute_container_remove_attrs); * @classdev: the class device * * This function simply removes all the attribute files and then calls - * class_device_del. + * device_del. */ void -attribute_container_class_device_del(struct class_device *classdev) +attribute_container_class_device_del(struct device *classdev) { attribute_container_remove_attrs(classdev); - class_device_del(classdev); + device_del(classdev); } -EXPORT_SYMBOL_GPL(attribute_container_class_device_del); /** * attribute_container_find_class_device - find the corresponding class_device @@ -416,16 +418,16 @@ EXPORT_SYMBOL_GPL(attribute_container_class_device_del); * Looks up the device in the container's list of class devices and returns * the corresponding class_device. */ -struct class_device * +struct device * attribute_container_find_class_device(struct attribute_container *cont, struct device *dev) { - struct class_device *cdev = NULL; + struct device *cdev = NULL; struct internal_container *ic; struct klist_iter iter; klist_for_each_entry(ic, &cont->containers, node, &iter) { - if (ic->classdev.dev == dev) { + if (ic->classdev.parent == dev) { cdev = &ic->classdev; /* FIXME: must exit iterator then break */ klist_iter_exit(&iter); @@ -436,10 +438,3 @@ attribute_container_find_class_device(struct attribute_container *cont, return cdev; } EXPORT_SYMBOL_GPL(attribute_container_find_class_device); - -int __init -attribute_container_init(void) -{ - INIT_LIST_HEAD(&attribute_container_list); - return 0; -} |