From cd987d38cc59053e0bab8150ffaca33b109067f3 Mon Sep 17 00:00:00 2001 From: "gregkh@suse.de" Date: Wed, 23 Mar 2005 11:12:38 -0800 Subject: [PATCH] [PATCH] class: remove class_simple code, as no one in the tree is using it anymore. Signed-off-by: Greg Kroah-Hartman --- drivers/base/Makefile | 2 +- drivers/base/class_simple.c | 199 ------------------------------------ include/linux/device.h | 10 -- 3 files changed, 1 insertion(+), 210 deletions(-) delete mode 100644 drivers/base/class_simple.c diff --git a/drivers/base/Makefile b/drivers/base/Makefile index a47928a2e5..771f6c80e8 100644 --- a/drivers/base/Makefile +++ b/drivers/base/Makefile @@ -1,7 +1,7 @@ # Makefile for the Linux device tree obj-y := core.o sys.o bus.o \ - driver.o class.o class_simple.o platform.o \ + driver.o class.o platform.o \ cpu.o firmware.o init.o map.o dmapool.o \ attribute_container.o transport_class.o obj-y += power/ diff --git a/drivers/base/class_simple.c b/drivers/base/class_simple.c deleted file mode 100644 index 27699eb20a..0000000000 --- a/drivers/base/class_simple.c +++ /dev/null @@ -1,199 +0,0 @@ -/* - * class_simple.c - a "simple" interface for classes for simple char devices. - * - * Copyright (c) 2003-2004 Greg Kroah-Hartman - * Copyright (c) 2003-2004 IBM Corp. - * - * This file is released under the GPLv2 - * - */ - -#include -#include -#include - -struct class_simple { - struct class class; -}; -#define to_class_simple(d) container_of(d, struct class_simple, class) - -struct simple_dev { - struct list_head node; - struct class_device class_dev; -}; -#define to_simple_dev(d) container_of(d, struct simple_dev, class_dev) - -static LIST_HEAD(simple_dev_list); -static DEFINE_SPINLOCK(simple_dev_list_lock); - -static void release_simple_dev(struct class_device *class_dev) -{ - struct simple_dev *s_dev = to_simple_dev(class_dev); - kfree(s_dev); -} - -static void class_simple_release(struct class *class) -{ - struct class_simple *cs = to_class_simple(class); - kfree(cs); -} - -/** - * class_simple_create - create a struct class_simple structure - * @owner: pointer to the module that is to "own" this struct class_simple - * @name: pointer to a string for the name of this class. - * - * This is used to create a struct class_simple pointer that can then be used - * in calls to class_simple_device_add(). This is used when you do not wish to - * create a full blown class support for a type of char devices. - * - * Note, the pointer created here is to be destroyed when finished by making a - * call to class_simple_destroy(). - */ -struct class_simple *class_simple_create(struct module *owner, char *name) -{ - struct class_simple *cs; - int retval; - - cs = kmalloc(sizeof(*cs), GFP_KERNEL); - if (!cs) { - retval = -ENOMEM; - goto error; - } - memset(cs, 0x00, sizeof(*cs)); - - cs->class.name = name; - cs->class.class_release = class_simple_release; - cs->class.release = release_simple_dev; - - retval = class_register(&cs->class); - if (retval) - goto error; - - return cs; - -error: - kfree(cs); - return ERR_PTR(retval); -} -EXPORT_SYMBOL(class_simple_create); - -/** - * class_simple_destroy - destroys a struct class_simple structure - * @cs: pointer to the struct class_simple that is to be destroyed - * - * Note, the pointer to be destroyed must have been created with a call to - * class_simple_create(). - */ -void class_simple_destroy(struct class_simple *cs) -{ - if ((cs == NULL) || (IS_ERR(cs))) - return; - - class_unregister(&cs->class); -} -EXPORT_SYMBOL(class_simple_destroy); - -/** - * class_simple_device_add - adds a class device to sysfs for a character driver - * @cs: pointer to the struct class_simple that this device should be registered to. - * @dev: the dev_t for the device to be added. - * @device: a pointer to a struct device that is assiociated with this class device. - * @fmt: string for the class device's name - * - * This function can be used by simple char device classes that do not - * implement their own class device registration. A struct class_device will - * be created in sysfs, registered to the specified class. A "dev" file will - * be created, showing the dev_t for the device. The pointer to the struct - * class_device will be returned from the call. Any further sysfs files that - * might be required can be created using this pointer. - * Note: the struct class_simple passed to this function must have previously been - * created with a call to class_simple_create(). - */ -struct class_device *class_simple_device_add(struct class_simple *cs, dev_t dev, struct device *device, const char *fmt, ...) -{ - va_list args; - struct simple_dev *s_dev = NULL; - int retval; - - if ((cs == NULL) || (IS_ERR(cs))) { - retval = -ENODEV; - goto error; - } - - s_dev = kmalloc(sizeof(*s_dev), GFP_KERNEL); - if (!s_dev) { - retval = -ENOMEM; - goto error; - } - memset(s_dev, 0x00, sizeof(*s_dev)); - - s_dev->class_dev.devt = dev; - s_dev->class_dev.dev = device; - s_dev->class_dev.class = &cs->class; - - va_start(args, fmt); - vsnprintf(s_dev->class_dev.class_id, BUS_ID_SIZE, fmt, args); - va_end(args); - retval = class_device_register(&s_dev->class_dev); - if (retval) - goto error; - - spin_lock(&simple_dev_list_lock); - list_add(&s_dev->node, &simple_dev_list); - spin_unlock(&simple_dev_list_lock); - - return &s_dev->class_dev; - -error: - kfree(s_dev); - return ERR_PTR(retval); -} -EXPORT_SYMBOL(class_simple_device_add); - -/** - * class_simple_set_hotplug - set the hotplug callback in the embedded struct class - * @cs: pointer to the struct class_simple to hold the pointer - * @hotplug: function pointer to the hotplug function - * - * Implement and set a hotplug function to add environment variables specific to this - * class on the hotplug event. - */ -int class_simple_set_hotplug(struct class_simple *cs, - int (*hotplug)(struct class_device *dev, char **envp, int num_envp, char *buffer, int buffer_size)) -{ - if ((cs == NULL) || (IS_ERR(cs))) - return -ENODEV; - cs->class.hotplug = hotplug; - return 0; -} -EXPORT_SYMBOL(class_simple_set_hotplug); - -/** - * class_simple_device_remove - removes a class device that was created with class_simple_device_add() - * @dev: the dev_t of the device that was previously registered. - * - * This call unregisters and cleans up a class device that was created with a - * call to class_device_simple_add() - */ -void class_simple_device_remove(dev_t dev) -{ - struct simple_dev *s_dev = NULL; - int found = 0; - - spin_lock(&simple_dev_list_lock); - list_for_each_entry(s_dev, &simple_dev_list, node) { - if (s_dev->class_dev.devt == dev) { - found = 1; - break; - } - } - if (found) { - list_del(&s_dev->node); - spin_unlock(&simple_dev_list_lock); - class_device_unregister(&s_dev->class_dev); - } else { - spin_unlock(&simple_dev_list_lock); - } -} -EXPORT_SYMBOL(class_simple_device_remove); diff --git a/include/linux/device.h b/include/linux/device.h index 73250d01c0..68a9535801 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -44,7 +44,6 @@ struct device; struct device_driver; struct class; struct class_device; -struct class_simple; struct bus_type { const char * name; @@ -254,15 +253,6 @@ extern struct class_device *class_device_create(struct class *cls, dev_t devt, __attribute__((format(printf,4,5))); extern void class_device_destroy(struct class *cls, dev_t devt); -/* interface for class simple stuff */ -extern struct class_simple *class_simple_create(struct module *owner, char *name); -extern void class_simple_destroy(struct class_simple *cs); -extern struct class_device *class_simple_device_add(struct class_simple *cs, dev_t dev, struct device *device, const char *fmt, ...) - __attribute__((format(printf,4,5))); -extern int class_simple_set_hotplug(struct class_simple *, - int (*hotplug)(struct class_device *dev, char **envp, int num_envp, char *buffer, int buffer_size)); -extern void class_simple_device_remove(dev_t dev); - struct device { struct list_head node; /* node in sibling list */ -- 2.39.5