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Diffstat (limited to 'drivers/firmware/efivars.c')
-rw-r--r--drivers/firmware/efivars.c762
1 files changed, 0 insertions, 762 deletions
diff --git a/drivers/firmware/efivars.c b/drivers/firmware/efivars.c
deleted file mode 100644
index 2a62ec6390e..00000000000
--- a/drivers/firmware/efivars.c
+++ /dev/null
@@ -1,762 +0,0 @@
-/*
- * EFI Variables - efivars.c
- *
- * Copyright (C) 2001,2003,2004 Dell <Matt_Domsch@dell.com>
- * Copyright (C) 2004 Intel Corporation <matthew.e.tolentino@intel.com>
- *
- * This code takes all variables accessible from EFI runtime and
- * exports them via sysfs
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- * Changelog:
- *
- * 17 May 2004 - Matt Domsch <Matt_Domsch@dell.com>
- * remove check for efi_enabled in exit
- * add MODULE_VERSION
- *
- * 26 Apr 2004 - Matt Domsch <Matt_Domsch@dell.com>
- * minor bug fixes
- *
- * 21 Apr 2004 - Matt Tolentino <matthew.e.tolentino@intel.com)
- * converted driver to export variable information via sysfs
- * and moved to drivers/firmware directory
- * bumped revision number to v0.07 to reflect conversion & move
- *
- * 10 Dec 2002 - Matt Domsch <Matt_Domsch@dell.com>
- * fix locking per Peter Chubb's findings
- *
- * 25 Mar 2002 - Matt Domsch <Matt_Domsch@dell.com>
- * move uuid_unparse() to include/asm-ia64/efi.h:efi_guid_unparse()
- *
- * 12 Feb 2002 - Matt Domsch <Matt_Domsch@dell.com>
- * use list_for_each_safe when deleting vars.
- * remove ifdef CONFIG_SMP around include <linux/smp.h>
- * v0.04 release to linux-ia64@linuxia64.org
- *
- * 20 April 2001 - Matt Domsch <Matt_Domsch@dell.com>
- * Moved vars from /proc/efi to /proc/efi/vars, and made
- * efi.c own the /proc/efi directory.
- * v0.03 release to linux-ia64@linuxia64.org
- *
- * 26 March 2001 - Matt Domsch <Matt_Domsch@dell.com>
- * At the request of Stephane, moved ownership of /proc/efi
- * to efi.c, and now efivars lives under /proc/efi/vars.
- *
- * 12 March 2001 - Matt Domsch <Matt_Domsch@dell.com>
- * Feedback received from Stephane Eranian incorporated.
- * efivar_write() checks copy_from_user() return value.
- * efivar_read/write() returns proper errno.
- * v0.02 release to linux-ia64@linuxia64.org
- *
- * 26 February 2001 - Matt Domsch <Matt_Domsch@dell.com>
- * v0.01 release to linux-ia64@linuxia64.org
- */
-
-#include <linux/capability.h>
-#include <linux/types.h>
-#include <linux/errno.h>
-#include <linux/init.h>
-#include <linux/mm.h>
-#include <linux/module.h>
-#include <linux/string.h>
-#include <linux/smp.h>
-#include <linux/efi.h>
-#include <linux/sysfs.h>
-#include <linux/kobject.h>
-#include <linux/device.h>
-#include <linux/slab.h>
-
-#include <asm/uaccess.h>
-
-#define EFIVARS_VERSION "0.08"
-#define EFIVARS_DATE "2004-May-17"
-
-MODULE_AUTHOR("Matt Domsch <Matt_Domsch@Dell.com>");
-MODULE_DESCRIPTION("sysfs interface to EFI Variables");
-MODULE_LICENSE("GPL");
-MODULE_VERSION(EFIVARS_VERSION);
-
-/*
- * efivars_lock protects two things:
- * 1) efivar_list - adds, removals, reads, writes
- * 2) efi.[gs]et_variable() calls.
- * It must not be held when creating sysfs entries or calling kmalloc.
- * efi.get_next_variable() is only called from efivars_init(),
- * which is protected by the BKL, so that path is safe.
- */
-static DEFINE_SPINLOCK(efivars_lock);
-static LIST_HEAD(efivar_list);
-
-/*
- * The maximum size of VariableName + Data = 1024
- * Therefore, it's reasonable to save that much
- * space in each part of the structure,
- * and we use a page for reading/writing.
- */
-
-struct efi_variable {
- efi_char16_t VariableName[1024/sizeof(efi_char16_t)];
- efi_guid_t VendorGuid;
- unsigned long DataSize;
- __u8 Data[1024];
- efi_status_t Status;
- __u32 Attributes;
-} __attribute__((packed));
-
-
-struct efivar_entry {
- struct efi_variable var;
- struct list_head list;
- struct kobject kobj;
-};
-
-struct efivar_attribute {
- struct attribute attr;
- ssize_t (*show) (struct efivar_entry *entry, char *buf);
- ssize_t (*store)(struct efivar_entry *entry, const char *buf, size_t count);
-};
-
-
-#define EFIVAR_ATTR(_name, _mode, _show, _store) \
-struct efivar_attribute efivar_attr_##_name = { \
- .attr = {.name = __stringify(_name), .mode = _mode}, \
- .show = _show, \
- .store = _store, \
-};
-
-#define to_efivar_attr(_attr) container_of(_attr, struct efivar_attribute, attr)
-#define to_efivar_entry(obj) container_of(obj, struct efivar_entry, kobj)
-
-/*
- * Prototype for sysfs creation function
- */
-static int
-efivar_create_sysfs_entry(unsigned long variable_name_size,
- efi_char16_t *variable_name,
- efi_guid_t *vendor_guid);
-
-/* Return the number of unicode characters in data */
-static unsigned long
-utf8_strlen(efi_char16_t *data, unsigned long maxlength)
-{
- unsigned long length = 0;
-
- while (*data++ != 0 && length < maxlength)
- length++;
- return length;
-}
-
-/*
- * Return the number of bytes is the length of this string
- * Note: this is NOT the same as the number of unicode characters
- */
-static inline unsigned long
-utf8_strsize(efi_char16_t *data, unsigned long maxlength)
-{
- return utf8_strlen(data, maxlength/sizeof(efi_char16_t)) * sizeof(efi_char16_t);
-}
-
-static efi_status_t
-get_var_data(struct efi_variable *var)
-{
- efi_status_t status;
-
- spin_lock(&efivars_lock);
- var->DataSize = 1024;
- status = efi.get_variable(var->VariableName,
- &var->VendorGuid,
- &var->Attributes,
- &var->DataSize,
- var->Data);
- spin_unlock(&efivars_lock);
- if (status != EFI_SUCCESS) {
- printk(KERN_WARNING "efivars: get_variable() failed 0x%lx!\n",
- status);
- }
- return status;
-}
-
-static ssize_t
-efivar_guid_read(struct efivar_entry *entry, char *buf)
-{
- struct efi_variable *var = &entry->var;
- char *str = buf;
-
- if (!entry || !buf)
- return 0;
-
- efi_guid_unparse(&var->VendorGuid, str);
- str += strlen(str);
- str += sprintf(str, "\n");
-
- return str - buf;
-}
-
-static ssize_t
-efivar_attr_read(struct efivar_entry *entry, char *buf)
-{
- struct efi_variable *var = &entry->var;
- char *str = buf;
- efi_status_t status;
-
- if (!entry || !buf)
- return -EINVAL;
-
- status = get_var_data(var);
- if (status != EFI_SUCCESS)
- return -EIO;
-
- if (var->Attributes & 0x1)
- str += sprintf(str, "EFI_VARIABLE_NON_VOLATILE\n");
- if (var->Attributes & 0x2)
- str += sprintf(str, "EFI_VARIABLE_BOOTSERVICE_ACCESS\n");
- if (var->Attributes & 0x4)
- str += sprintf(str, "EFI_VARIABLE_RUNTIME_ACCESS\n");
- return str - buf;
-}
-
-static ssize_t
-efivar_size_read(struct efivar_entry *entry, char *buf)
-{
- struct efi_variable *var = &entry->var;
- char *str = buf;
- efi_status_t status;
-
- if (!entry || !buf)
- return -EINVAL;
-
- status = get_var_data(var);
- if (status != EFI_SUCCESS)
- return -EIO;
-
- str += sprintf(str, "0x%lx\n", var->DataSize);
- return str - buf;
-}
-
-static ssize_t
-efivar_data_read(struct efivar_entry *entry, char *buf)
-{
- struct efi_variable *var = &entry->var;
- efi_status_t status;
-
- if (!entry || !buf)
- return -EINVAL;
-
- status = get_var_data(var);
- if (status != EFI_SUCCESS)
- return -EIO;
-
- memcpy(buf, var->Data, var->DataSize);
- return var->DataSize;
-}
-/*
- * We allow each variable to be edited via rewriting the
- * entire efi variable structure.
- */
-static ssize_t
-efivar_store_raw(struct efivar_entry *entry, const char *buf, size_t count)
-{
- struct efi_variable *new_var, *var = &entry->var;
- efi_status_t status = EFI_NOT_FOUND;
-
- if (count != sizeof(struct efi_variable))
- return -EINVAL;
-
- new_var = (struct efi_variable *)buf;
- /*
- * If only updating the variable data, then the name
- * and guid should remain the same
- */
- if (memcmp(new_var->VariableName, var->VariableName, sizeof(var->VariableName)) ||
- efi_guidcmp(new_var->VendorGuid, var->VendorGuid)) {
- printk(KERN_ERR "efivars: Cannot edit the wrong variable!\n");
- return -EINVAL;
- }
-
- if ((new_var->DataSize <= 0) || (new_var->Attributes == 0)){
- printk(KERN_ERR "efivars: DataSize & Attributes must be valid!\n");
- return -EINVAL;
- }
-
- spin_lock(&efivars_lock);
- status = efi.set_variable(new_var->VariableName,
- &new_var->VendorGuid,
- new_var->Attributes,
- new_var->DataSize,
- new_var->Data);
-
- spin_unlock(&efivars_lock);
-
- if (status != EFI_SUCCESS) {
- printk(KERN_WARNING "efivars: set_variable() failed: status=%lx\n",
- status);
- return -EIO;
- }
-
- memcpy(&entry->var, new_var, count);
- return count;
-}
-
-static ssize_t
-efivar_show_raw(struct efivar_entry *entry, char *buf)
-{
- struct efi_variable *var = &entry->var;
- efi_status_t status;
-
- if (!entry || !buf)
- return 0;
-
- status = get_var_data(var);
- if (status != EFI_SUCCESS)
- return -EIO;
-
- memcpy(buf, var, sizeof(*var));
- return sizeof(*var);
-}
-
-/*
- * Generic read/write functions that call the specific functions of
- * the atttributes...
- */
-static ssize_t efivar_attr_show(struct kobject *kobj, struct attribute *attr,
- char *buf)
-{
- struct efivar_entry *var = to_efivar_entry(kobj);
- struct efivar_attribute *efivar_attr = to_efivar_attr(attr);
- ssize_t ret = -EIO;
-
- if (!capable(CAP_SYS_ADMIN))
- return -EACCES;
-
- if (efivar_attr->show) {
- ret = efivar_attr->show(var, buf);
- }
- return ret;
-}
-
-static ssize_t efivar_attr_store(struct kobject *kobj, struct attribute *attr,
- const char *buf, size_t count)
-{
- struct efivar_entry *var = to_efivar_entry(kobj);
- struct efivar_attribute *efivar_attr = to_efivar_attr(attr);
- ssize_t ret = -EIO;
-
- if (!capable(CAP_SYS_ADMIN))
- return -EACCES;
-
- if (efivar_attr->store)
- ret = efivar_attr->store(var, buf, count);
-
- return ret;
-}
-
-static const struct sysfs_ops efivar_attr_ops = {
- .show = efivar_attr_show,
- .store = efivar_attr_store,
-};
-
-static void efivar_release(struct kobject *kobj)
-{
- struct efivar_entry *var = container_of(kobj, struct efivar_entry, kobj);
- kfree(var);
-}
-
-static EFIVAR_ATTR(guid, 0400, efivar_guid_read, NULL);
-static EFIVAR_ATTR(attributes, 0400, efivar_attr_read, NULL);
-static EFIVAR_ATTR(size, 0400, efivar_size_read, NULL);
-static EFIVAR_ATTR(data, 0400, efivar_data_read, NULL);
-static EFIVAR_ATTR(raw_var, 0600, efivar_show_raw, efivar_store_raw);
-
-static struct attribute *def_attrs[] = {
- &efivar_attr_guid.attr,
- &efivar_attr_size.attr,
- &efivar_attr_attributes.attr,
- &efivar_attr_data.attr,
- &efivar_attr_raw_var.attr,
- NULL,
-};
-
-static struct kobj_type efivar_ktype = {
- .release = efivar_release,
- .sysfs_ops = &efivar_attr_ops,
- .default_attrs = def_attrs,
-};
-
-static inline void
-efivar_unregister(struct efivar_entry *var)
-{
- kobject_put(&var->kobj);
-}
-
-
-static ssize_t efivar_create(struct file *filp, struct kobject *kobj,
- struct bin_attribute *bin_attr,
- char *buf, loff_t pos, size_t count)
-{
- struct efi_variable *new_var = (struct efi_variable *)buf;
- struct efivar_entry *search_efivar, *n;
- unsigned long strsize1, strsize2;
- efi_status_t status = EFI_NOT_FOUND;
- int found = 0;
-
- if (!capable(CAP_SYS_ADMIN))
- return -EACCES;
-
- spin_lock(&efivars_lock);
-
- /*
- * Does this variable already exist?
- */
- list_for_each_entry_safe(search_efivar, n, &efivar_list, list) {
- strsize1 = utf8_strsize(search_efivar->var.VariableName, 1024);
- strsize2 = utf8_strsize(new_var->VariableName, 1024);
- if (strsize1 == strsize2 &&
- !memcmp(&(search_efivar->var.VariableName),
- new_var->VariableName, strsize1) &&
- !efi_guidcmp(search_efivar->var.VendorGuid,
- new_var->VendorGuid)) {
- found = 1;
- break;
- }
- }
- if (found) {
- spin_unlock(&efivars_lock);
- return -EINVAL;
- }
-
- /* now *really* create the variable via EFI */
- status = efi.set_variable(new_var->VariableName,
- &new_var->VendorGuid,
- new_var->Attributes,
- new_var->DataSize,
- new_var->Data);
-
- if (status != EFI_SUCCESS) {
- printk(KERN_WARNING "efivars: set_variable() failed: status=%lx\n",
- status);
- spin_unlock(&efivars_lock);
- return -EIO;
- }
- spin_unlock(&efivars_lock);
-
- /* Create the entry in sysfs. Locking is not required here */
- status = efivar_create_sysfs_entry(utf8_strsize(new_var->VariableName,
- 1024), new_var->VariableName, &new_var->VendorGuid);
- if (status) {
- printk(KERN_WARNING "efivars: variable created, but sysfs entry wasn't.\n");
- }
- return count;
-}
-
-static ssize_t efivar_delete(struct file *filp, struct kobject *kobj,
- struct bin_attribute *bin_attr,
- char *buf, loff_t pos, size_t count)
-{
- struct efi_variable *del_var = (struct efi_variable *)buf;
- struct efivar_entry *search_efivar, *n;
- unsigned long strsize1, strsize2;
- efi_status_t status = EFI_NOT_FOUND;
- int found = 0;
-
- if (!capable(CAP_SYS_ADMIN))
- return -EACCES;
-
- spin_lock(&efivars_lock);
-
- /*
- * Does this variable already exist?
- */
- list_for_each_entry_safe(search_efivar, n, &efivar_list, list) {
- strsize1 = utf8_strsize(search_efivar->var.VariableName, 1024);
- strsize2 = utf8_strsize(del_var->VariableName, 1024);
- if (strsize1 == strsize2 &&
- !memcmp(&(search_efivar->var.VariableName),
- del_var->VariableName, strsize1) &&
- !efi_guidcmp(search_efivar->var.VendorGuid,
- del_var->VendorGuid)) {
- found = 1;
- break;
- }
- }
- if (!found) {
- spin_unlock(&efivars_lock);
- return -EINVAL;
- }
- /* force the Attributes/DataSize to 0 to ensure deletion */
- del_var->Attributes = 0;
- del_var->DataSize = 0;
-
- status = efi.set_variable(del_var->VariableName,
- &del_var->VendorGuid,
- del_var->Attributes,
- del_var->DataSize,
- del_var->Data);
-
- if (status != EFI_SUCCESS) {
- printk(KERN_WARNING "efivars: set_variable() failed: status=%lx\n",
- status);
- spin_unlock(&efivars_lock);
- return -EIO;
- }
- list_del(&search_efivar->list);
- /* We need to release this lock before unregistering. */
- spin_unlock(&efivars_lock);
- efivar_unregister(search_efivar);
-
- /* It's dead Jim.... */
- return count;
-}
-
-static struct bin_attribute var_subsys_attr_new_var = {
- .attr = {.name = "new_var", .mode = 0200},
- .write = efivar_create,
-};
-
-static struct bin_attribute var_subsys_attr_del_var = {
- .attr = {.name = "del_var", .mode = 0200},
- .write = efivar_delete,
-};
-
-/*
- * Let's not leave out systab information that snuck into
- * the efivars driver
- */
-static ssize_t systab_show(struct kobject *kobj,
- struct kobj_attribute *attr, char *buf)
-{
- char *str = buf;
-
- if (!kobj || !buf)
- return -EINVAL;
-
- if (efi.mps != EFI_INVALID_TABLE_ADDR)
- str += sprintf(str, "MPS=0x%lx\n", efi.mps);
- if (efi.acpi20 != EFI_INVALID_TABLE_ADDR)
- str += sprintf(str, "ACPI20=0x%lx\n", efi.acpi20);
- if (efi.acpi != EFI_INVALID_TABLE_ADDR)
- str += sprintf(str, "ACPI=0x%lx\n", efi.acpi);
- if (efi.smbios != EFI_INVALID_TABLE_ADDR)
- str += sprintf(str, "SMBIOS=0x%lx\n", efi.smbios);
- if (efi.hcdp != EFI_INVALID_TABLE_ADDR)
- str += sprintf(str, "HCDP=0x%lx\n", efi.hcdp);
- if (efi.boot_info != EFI_INVALID_TABLE_ADDR)
- str += sprintf(str, "BOOTINFO=0x%lx\n", efi.boot_info);
- if (efi.uga != EFI_INVALID_TABLE_ADDR)
- str += sprintf(str, "UGA=0x%lx\n", efi.uga);
-
- return str - buf;
-}
-
-static struct kobj_attribute efi_attr_systab =
- __ATTR(systab, 0400, systab_show, NULL);
-
-static struct attribute *efi_subsys_attrs[] = {
- &efi_attr_systab.attr,
- NULL, /* maybe more in the future? */
-};
-
-static struct attribute_group efi_subsys_attr_group = {
- .attrs = efi_subsys_attrs,
-};
-
-
-static struct kset *vars_kset;
-static struct kobject *efi_kobj;
-
-/*
- * efivar_create_sysfs_entry()
- * Requires:
- * variable_name_size = number of bytes required to hold
- * variable_name (not counting the NULL
- * character at the end.
- * efivars_lock is not held on entry or exit.
- * Returns 1 on failure, 0 on success
- */
-static int
-efivar_create_sysfs_entry(unsigned long variable_name_size,
- efi_char16_t *variable_name,
- efi_guid_t *vendor_guid)
-{
- int i, short_name_size = variable_name_size / sizeof(efi_char16_t) + 38;
- char *short_name;
- struct efivar_entry *new_efivar;
-
- short_name = kzalloc(short_name_size + 1, GFP_KERNEL);
- new_efivar = kzalloc(sizeof(struct efivar_entry), GFP_KERNEL);
-
- if (!short_name || !new_efivar) {
- kfree(short_name);
- kfree(new_efivar);
- return 1;
- }
-
- memcpy(new_efivar->var.VariableName, variable_name,
- variable_name_size);
- memcpy(&(new_efivar->var.VendorGuid), vendor_guid, sizeof(efi_guid_t));
-
- /* Convert Unicode to normal chars (assume top bits are 0),
- ala UTF-8 */
- for (i=0; i < (int)(variable_name_size / sizeof(efi_char16_t)); i++) {
- short_name[i] = variable_name[i] & 0xFF;
- }
- /* This is ugly, but necessary to separate one vendor's
- private variables from another's. */
-
- *(short_name + strlen(short_name)) = '-';
- efi_guid_unparse(vendor_guid, short_name + strlen(short_name));
-
- new_efivar->kobj.kset = vars_kset;
- i = kobject_init_and_add(&new_efivar->kobj, &efivar_ktype, NULL,
- "%s", short_name);
- if (i) {
- kfree(short_name);
- kfree(new_efivar);
- return 1;
- }
-
- kobject_uevent(&new_efivar->kobj, KOBJ_ADD);
- kfree(short_name);
- short_name = NULL;
-
- spin_lock(&efivars_lock);
- list_add(&new_efivar->list, &efivar_list);
- spin_unlock(&efivars_lock);
-
- return 0;
-}
-/*
- * For now we register the efi subsystem with the firmware subsystem
- * and the vars subsystem with the efi subsystem. In the future, it
- * might make sense to split off the efi subsystem into its own
- * driver, but for now only efivars will register with it, so just
- * include it here.
- */
-
-static int __init
-efivars_init(void)
-{
- efi_status_t status = EFI_NOT_FOUND;
- efi_guid_t vendor_guid;
- efi_char16_t *variable_name;
- unsigned long variable_name_size = 1024;
- int error = 0;
-
- if (!efi_enabled)
- return -ENODEV;
-
- variable_name = kzalloc(variable_name_size, GFP_KERNEL);
- if (!variable_name) {
- printk(KERN_ERR "efivars: Memory allocation failed.\n");
- return -ENOMEM;
- }
-
- printk(KERN_INFO "EFI Variables Facility v%s %s\n", EFIVARS_VERSION,
- EFIVARS_DATE);
-
- /* For now we'll register the efi directory at /sys/firmware/efi */
- efi_kobj = kobject_create_and_add("efi", firmware_kobj);
- if (!efi_kobj) {
- printk(KERN_ERR "efivars: Firmware registration failed.\n");
- error = -ENOMEM;
- goto out_free;
- }
-
- vars_kset = kset_create_and_add("vars", NULL, efi_kobj);
- if (!vars_kset) {
- printk(KERN_ERR "efivars: Subsystem registration failed.\n");
- error = -ENOMEM;
- goto out_firmware_unregister;
- }
-
- /*
- * Per EFI spec, the maximum storage allocated for both
- * the variable name and variable data is 1024 bytes.
- */
-
- do {
- variable_name_size = 1024;
-
- status = efi.get_next_variable(&variable_name_size,
- variable_name,
- &vendor_guid);
- switch (status) {
- case EFI_SUCCESS:
- efivar_create_sysfs_entry(variable_name_size,
- variable_name,
- &vendor_guid);
- break;
- case EFI_NOT_FOUND:
- break;
- default:
- printk(KERN_WARNING "efivars: get_next_variable: status=%lx\n",
- status);
- status = EFI_NOT_FOUND;
- break;
- }
- } while (status != EFI_NOT_FOUND);
-
- /*
- * Now add attributes to allow creation of new vars
- * and deletion of existing ones...
- */
- error = sysfs_create_bin_file(&vars_kset->kobj,
- &var_subsys_attr_new_var);
- if (error)
- printk(KERN_ERR "efivars: unable to create new_var sysfs file"
- " due to error %d\n", error);
- error = sysfs_create_bin_file(&vars_kset->kobj,
- &var_subsys_attr_del_var);
- if (error)
- printk(KERN_ERR "efivars: unable to create del_var sysfs file"
- " due to error %d\n", error);
-
- /* Don't forget the systab entry */
- error = sysfs_create_group(efi_kobj, &efi_subsys_attr_group);
- if (error)
- printk(KERN_ERR "efivars: Sysfs attribute export failed with error %d.\n", error);
- else
- goto out_free;
-
- kset_unregister(vars_kset);
-
-out_firmware_unregister:
- kobject_put(efi_kobj);
-
-out_free:
- kfree(variable_name);
-
- return error;
-}
-
-static void __exit
-efivars_exit(void)
-{
- struct efivar_entry *entry, *n;
-
- list_for_each_entry_safe(entry, n, &efivar_list, list) {
- spin_lock(&efivars_lock);
- list_del(&entry->list);
- spin_unlock(&efivars_lock);
- efivar_unregister(entry);
- }
-
- kset_unregister(vars_kset);
- kobject_put(efi_kobj);
-}
-
-module_init(efivars_init);
-module_exit(efivars_exit);
-
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-04 13:28:20 +0000