14 files changed, 3 insertions, 963 deletions

diff --git a/Documentation/x86/x86_64/uefi.rst b/Documentation/x86/x86_64/uefi.rst
index 3b894103a734..fbc30c9a071d 100644
--- a/Documentation/x86/x86_64/uefi.rst
+++ b/Documentation/x86/x86_64/uefi.rst
@@ -29,7 +29,7 @@ Mechanics
   be selected::
 
 	CONFIG_EFI=y
-	CONFIG_EFI_VARS=y or m		# optional
+	CONFIG_EFIVAR_FS=y or m		# optional
 
 - Create a VFAT partition on the disk
 - Copy the following to the VFAT partition:
diff --git a/arch/arm/configs/milbeaut_m10v_defconfig b/arch/arm/configs/milbeaut_m10v_defconfig
index 7c07f9893a0f..9b4789af0201 100644
--- a/arch/arm/configs/milbeaut_m10v_defconfig
+++ b/arch/arm/configs/milbeaut_m10v_defconfig
@@ -44,7 +44,6 @@ CONFIG_ARM_CPUIDLE=y
 CONFIG_VFP=y
 CONFIG_NEON=y
 CONFIG_KERNEL_MODE_NEON=y
-CONFIG_EFI_VARS=m
 CONFIG_EFI_CAPSULE_LOADER=m
 CONFIG_ARM_CRYPTO=y
 CONFIG_CRYPTO_SHA1_ARM_NEON=m
diff --git a/arch/ia64/configs/bigsur_defconfig b/arch/ia64/configs/bigsur_defconfig
index 0341a67cc1bf..a3724882295c 100644
--- a/arch/ia64/configs/bigsur_defconfig
+++ b/arch/ia64/configs/bigsur_defconfig
@@ -10,7 +10,6 @@ CONFIG_SMP=y
 CONFIG_NR_CPUS=2
 CONFIG_PREEMPT=y
 CONFIG_IA64_PALINFO=y
-CONFIG_EFI_VARS=y
 CONFIG_BINFMT_MISC=m
 CONFIG_ACPI_BUTTON=m
 CONFIG_ACPI_FAN=m
diff --git a/arch/ia64/configs/generic_defconfig b/arch/ia64/configs/generic_defconfig
index 8916a2850c48..a3dff482a3d7 100644
--- a/arch/ia64/configs/generic_defconfig
+++ b/arch/ia64/configs/generic_defconfig
@@ -21,7 +21,6 @@ CONFIG_IA64_MCA_RECOVERY=y
 CONFIG_IA64_PALINFO=y
 CONFIG_KEXEC=y
 CONFIG_CRASH_DUMP=y
-CONFIG_EFI_VARS=y
 CONFIG_BINFMT_MISC=m
 CONFIG_ACPI_BUTTON=m
 CONFIG_ACPI_FAN=m
diff --git a/arch/ia64/configs/gensparse_defconfig b/arch/ia64/configs/gensparse_defconfig
index 281eb9c544f9..4cd46105b020 100644
--- a/arch/ia64/configs/gensparse_defconfig
+++ b/arch/ia64/configs/gensparse_defconfig
@@ -18,7 +18,6 @@ CONFIG_HOTPLUG_CPU=y
 CONFIG_SPARSEMEM_MANUAL=y
 CONFIG_IA64_MCA_RECOVERY=y
 CONFIG_IA64_PALINFO=y
-CONFIG_EFI_VARS=y
 CONFIG_BINFMT_MISC=m
 CONFIG_ACPI_BUTTON=m
 CONFIG_ACPI_FAN=m
diff --git a/arch/ia64/configs/tiger_defconfig b/arch/ia64/configs/tiger_defconfig
index b4f9819a1a45..a2045d73adfa 100644
--- a/arch/ia64/configs/tiger_defconfig
+++ b/arch/ia64/configs/tiger_defconfig
@@ -23,7 +23,6 @@ CONFIG_FORCE_CPEI_RETARGET=y
 CONFIG_IA64_MCA_RECOVERY=y
 CONFIG_IA64_PALINFO=y
 CONFIG_KEXEC=y
-CONFIG_EFI_VARS=y
 CONFIG_BINFMT_MISC=m
 CONFIG_ACPI_BUTTON=m
 CONFIG_ACPI_FAN=m
diff --git a/arch/ia64/configs/zx1_defconfig b/arch/ia64/configs/zx1_defconfig
index 851d8594cdb8..99f8b2a0332b 100644
--- a/arch/ia64/configs/zx1_defconfig
+++ b/arch/ia64/configs/zx1_defconfig
@@ -12,7 +12,6 @@ CONFIG_FLATMEM_MANUAL=y
 CONFIG_IA64_MCA_RECOVERY=y
 CONFIG_IA64_PALINFO=y
 CONFIG_CRASH_DUMP=y
-CONFIG_EFI_VARS=y
 CONFIG_BINFMT_MISC=y
 CONFIG_HOTPLUG_PCI=y
 CONFIG_HOTPLUG_PCI_ACPI=y
diff --git a/arch/x86/configs/i386_defconfig b/arch/x86/configs/i386_defconfig
index 98a4852ed6a0..7207219509f6 100644
--- a/arch/x86/configs/i386_defconfig
+++ b/arch/x86/configs/i386_defconfig
@@ -135,7 +135,6 @@ CONFIG_DEVTMPFS=y
 CONFIG_DEVTMPFS_MOUNT=y
 CONFIG_DEBUG_DEVRES=y
 CONFIG_CONNECTOR=y
-CONFIG_EFI_VARS=y
 CONFIG_EFI_CAPSULE_LOADER=y
 CONFIG_BLK_DEV_LOOP=y
 CONFIG_VIRTIO_BLK=y
diff --git a/arch/x86/configs/x86_64_defconfig b/arch/x86/configs/x86_64_defconfig
index 69784505a7a8..5ce67b73e218 100644
--- a/arch/x86/configs/x86_64_defconfig
+++ b/arch/x86/configs/x86_64_defconfig
@@ -134,7 +134,6 @@ CONFIG_DEVTMPFS=y
 CONFIG_DEVTMPFS_MOUNT=y
 CONFIG_DEBUG_DEVRES=y
 CONFIG_CONNECTOR=y
-CONFIG_EFI_VARS=y
 CONFIG_BLK_DEV_LOOP=y
 CONFIG_VIRTIO_BLK=y
 CONFIG_BLK_DEV_SD=y
diff --git a/drivers/firmware/efi/Kconfig b/drivers/firmware/efi/Kconfig
index 7fe8b5c686d2..6cb7384ad2ac 100644
--- a/drivers/firmware/efi/Kconfig
+++ b/drivers/firmware/efi/Kconfig
@@ -2,18 +2,6 @@
 menu "EFI (Extensible Firmware Interface) Support"
 	depends on EFI
 
-config EFI_VARS
-	tristate "EFI Variable Support via sysfs"
-	depends on EFI && (X86 || IA64)
-	default n
-	help
-	  If you say Y here, you are able to get EFI (Extensible Firmware
-	  Interface) variable information via sysfs.  You may read,
-	  write, create, and destroy EFI variables through this interface.
-	  Note that this driver is only retained for compatibility with
-	  legacy users: new users should use the efivarfs filesystem
-	  instead.
-
 config EFI_ESRT
 	bool
 	depends on EFI && !IA64
diff --git a/drivers/firmware/efi/Makefile b/drivers/firmware/efi/Makefile
index c02ff25dd477..8d151e332584 100644
--- a/drivers/firmware/efi/Makefile
+++ b/drivers/firmware/efi/Makefile
@@ -17,7 +17,6 @@ ifneq ($(CONFIG_EFI_CAPSULE_LOADER),)
 obj-$(CONFIG_EFI)			+= capsule.o
 endif
 obj-$(CONFIG_EFI_PARAMS_FROM_FDT)	+= fdtparams.o
-obj-$(CONFIG_EFI_VARS)			+= efivars.o
 obj-$(CONFIG_EFI_ESRT)			+= esrt.o
 obj-$(CONFIG_EFI_VARS_PSTORE)		+= efi-pstore.o
 obj-$(CONFIG_UEFI_CPER)			+= cper.o
diff --git a/drivers/firmware/efi/efivars.c b/drivers/firmware/efi/efivars.c
deleted file mode 100644
index 801a65582172..000000000000
--- a/drivers/firmware/efi/efivars.c
+++ /dev/null
@@ -1,660 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * Originally from 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
- */
-
-#include <linux/efi.h>
-#include <linux/module.h>
-#include <linux/slab.h>
-#include <linux/ucs2_string.h>
-#include <linux/compat.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);
-
-static LIST_HEAD(efivar_sysfs_list);
-
-static struct kset *efivars_kset;
-
-static struct bin_attribute *efivars_new_var;
-static struct bin_attribute *efivars_del_var;
-
-struct compat_efi_variable {
-	efi_char16_t  VariableName[EFI_VAR_NAME_LEN/sizeof(efi_char16_t)];
-	efi_guid_t    VendorGuid;
-	__u32         DataSize;
-	__u8          Data[1024];
-	__u32         Status;
-	__u32         Attributes;
-} __packed;
-
-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(struct efivar_entry *new_var);
-
-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_to_str(&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;
-	unsigned long size = sizeof(var->Data);
-	char *str = buf;
-	int ret;
-
-	if (!entry || !buf)
-		return -EINVAL;
-
-	ret = efivar_entry_get(entry, &var->Attributes, &size, var->Data);
-	var->DataSize = size;
-	if (ret)
-		return -EIO;
-
-	if (var->Attributes & EFI_VARIABLE_NON_VOLATILE)
-		str += sprintf(str, "EFI_VARIABLE_NON_VOLATILE\n");
-	if (var->Attributes & EFI_VARIABLE_BOOTSERVICE_ACCESS)
-		str += sprintf(str, "EFI_VARIABLE_BOOTSERVICE_ACCESS\n");
-	if (var->Attributes & EFI_VARIABLE_RUNTIME_ACCESS)
-		str += sprintf(str, "EFI_VARIABLE_RUNTIME_ACCESS\n");
-	if (var->Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD)
-		str += sprintf(str, "EFI_VARIABLE_HARDWARE_ERROR_RECORD\n");
-	if (var->Attributes & EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS)
-		str += sprintf(str,
-			"EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS\n");
-	if (var->Attributes &
-			EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS)
-		str += sprintf(str,
-			"EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS\n");
-	if (var->Attributes & EFI_VARIABLE_APPEND_WRITE)
-		str += sprintf(str, "EFI_VARIABLE_APPEND_WRITE\n");
-	return str - buf;
-}
-
-static ssize_t
-efivar_size_read(struct efivar_entry *entry, char *buf)
-{
-	struct efi_variable *var = &entry->var;
-	unsigned long size = sizeof(var->Data);
-	char *str = buf;
-	int ret;
-
-	if (!entry || !buf)
-		return -EINVAL;
-
-	ret = efivar_entry_get(entry, &var->Attributes, &size, var->Data);
-	var->DataSize = size;
-	if (ret)
-		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;
-	unsigned long size = sizeof(var->Data);
-	int ret;
-
-	if (!entry || !buf)
-		return -EINVAL;
-
-	ret = efivar_entry_get(entry, &var->Attributes, &size, var->Data);
-	var->DataSize = size;
-	if (ret)
-		return -EIO;
-
-	memcpy(buf, var->Data, var->DataSize);
-	return var->DataSize;
-}
-
-static inline int
-sanity_check(struct efi_variable *var, efi_char16_t *name, efi_guid_t vendor,
-	     unsigned long size, u32 attributes, u8 *data)
-{
-	/*
-	 * If only updating the variable data, then the name
-	 * and guid should remain the same
-	 */
-	if (memcmp(name, var->VariableName, sizeof(var->VariableName)) ||
-		efi_guidcmp(vendor, var->VendorGuid)) {
-		printk(KERN_ERR "efivars: Cannot edit the wrong variable!\n");
-		return -EINVAL;
-	}
-
-	if ((size <= 0) || (attributes == 0)){
-		printk(KERN_ERR "efivars: DataSize & Attributes must be valid!\n");
-		return -EINVAL;
-	}
-
-	if ((attributes & ~EFI_VARIABLE_MASK) != 0 ||
-	    efivar_validate(vendor, name, data, size) == false) {
-		printk(KERN_ERR "efivars: Malformed variable content\n");
-		return -EINVAL;
-	}
-
-	return 0;
-}
-
-static void
-copy_out_compat(struct efi_variable *dst, struct compat_efi_variable *src)
-{
-	memcpy(dst->VariableName, src->VariableName, EFI_VAR_NAME_LEN);
-	memcpy(dst->Data, src->Data, sizeof(src->Data));
-
-	dst->VendorGuid = src->VendorGuid;
-	dst->DataSize = src->DataSize;
-	dst->Attributes = src->Attributes;
-}
-
-/*
- * 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_char16_t *name;
-	unsigned long size;
-	efi_guid_t vendor;
-	u32 attributes;
-	u8 *data;
-	int err;
-
-	if (!entry || !buf)
-		return -EINVAL;
-
-	if (in_compat_syscall()) {
-		struct compat_efi_variable *compat;
-
-		if (count != sizeof(*compat))
-			return -EINVAL;
-
-		compat = (struct compat_efi_variable *)buf;
-		attributes = compat->Attributes;
-		vendor = compat->VendorGuid;
-		name = compat->VariableName;
-		size = compat->DataSize;
-		data = compat->Data;
-
-		err = sanity_check(var, name, vendor, size, attributes, data);
-		if (err)
-			return err;
-
-		copy_out_compat(&entry->var, compat);
-	} else {
-		if (count != sizeof(struct efi_variable))
-			return -EINVAL;
-
-		new_var = (struct efi_variable *)buf;
-
-		attributes = new_var->Attributes;
-		vendor = new_var->VendorGuid;
-		name = new_var->VariableName;
-		size = new_var->DataSize;
-		data = new_var->Data;
-
-		err = sanity_check(var, name, vendor, size, attributes, data);
-		if (err)
-			return err;
-
-		memcpy(&entry->var, new_var, count);
-	}
-
-	err = efivar_entry_set(entry, attributes, size, data, NULL);
-	if (err) {
-		printk(KERN_WARNING "efivars: set_variable() failed: status=%d\n", err);
-		return -EIO;
-	}
-
-	return count;
-}
-
-static ssize_t
-efivar_show_raw(struct efivar_entry *entry, char *buf)
-{
-	struct efi_variable *var = &entry->var;
-	struct compat_efi_variable *compat;
-	unsigned long datasize = sizeof(var->Data);
-	size_t size;
-	int ret;
-
-	if (!entry || !buf)
-		return 0;
-
-	ret = efivar_entry_get(entry, &var->Attributes, &datasize, var->Data);
-	var->DataSize = datasize;
-	if (ret)
-		return -EIO;
-
-	if (in_compat_syscall()) {
-		compat = (struct compat_efi_variable *)buf;
-
-		size = sizeof(*compat);
-		memcpy(compat->VariableName, var->VariableName,
-			EFI_VAR_NAME_LEN);
-		memcpy(compat->Data, var->Data, sizeof(compat->Data));
-
-		compat->VendorGuid = var->VendorGuid;
-		compat->DataSize = var->DataSize;
-		compat->Attributes = var->Attributes;
-	} else {
-		size = sizeof(*var);
-		memcpy(buf, var, size);
-	}
-
-	return size;
-}
-
-/*
- * Generic read/write functions that call the specific functions of
- * the attributes...
- */
-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 = to_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,
-};
-ATTRIBUTE_GROUPS(def);
-
-static struct kobj_type efivar_ktype = {
-	.release = efivar_release,
-	.sysfs_ops = &efivar_attr_ops,
-	.default_groups = def_groups,
-};
-
-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 compat_efi_variable *compat = (struct compat_efi_variable *)buf;
-	struct efi_variable *new_var = (struct efi_variable *)buf;
-	struct efivar_entry *new_entry;
-	bool need_compat = in_compat_syscall();
-	efi_char16_t *name;
-	unsigned long size;
-	u32 attributes;
-	u8 *data;
-	int err;
-
-	if (!capable(CAP_SYS_ADMIN))
-		return -EACCES;
-
-	if (need_compat) {
-		if (count != sizeof(*compat))
-			return -EINVAL;
-
-		attributes = compat->Attributes;
-		name = compat->VariableName;
-		size = compat->DataSize;
-		data = compat->Data;
-	} else {
-		if (count != sizeof(*new_var))
-			return -EINVAL;
-
-		attributes = new_var->Attributes;
-		name = new_var->VariableName;
-		size = new_var->DataSize;
-		data = new_var->Data;
-	}
-
-	if ((attributes & ~EFI_VARIABLE_MASK) != 0 ||
-	    efivar_validate(new_var->VendorGuid, name, data,
-			    size) == false) {
-		printk(KERN_ERR "efivars: Malformed variable content\n");
-		return -EINVAL;
-	}
-
-	new_entry = kzalloc(sizeof(*new_entry), GFP_KERNEL);
-	if (!new_entry)
-		return -ENOMEM;
-
-	if (need_compat)
-		copy_out_compat(&new_entry->var, compat);
-	else
-		memcpy(&new_entry->var, new_var, sizeof(*new_var));
-
-	err = efivar_entry_set(new_entry, attributes, size,
-			       data, &efivar_sysfs_list);
-	if (err) {
-		if (err == -EEXIST)
-			err = -EINVAL;
-		goto out;
-	}
-
-	if (efivar_create_sysfs_entry(new_entry)) {
-		printk(KERN_WARNING "efivars: failed to create sysfs entry.\n");
-		kfree(new_entry);
-	}
-	return count;
-
-out:
-	kfree(new_entry);
-	return err;
-}
-
-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 compat_efi_variable *compat;
-	struct efivar_entry *entry;
-	efi_char16_t *name;
-	efi_guid_t vendor;
-	int err = 0;
-
-	if (!capable(CAP_SYS_ADMIN))
-		return -EACCES;
-
-	if (in_compat_syscall()) {
-		if (count != sizeof(*compat))
-			return -EINVAL;
-
-		compat = (struct compat_efi_variable *)buf;
-		name = compat->VariableName;
-		vendor = compat->VendorGuid;
-	} else {
-		if (count != sizeof(*del_var))
-			return -EINVAL;
-
-		name = del_var->VariableName;
-		vendor = del_var->VendorGuid;
-	}
-
-	if (efivar_entry_iter_begin())
-		return -EINTR;
-	entry = efivar_entry_find(name, vendor, &efivar_sysfs_list, true);
-	if (!entry)
-		err = -EINVAL;
-	else if (__efivar_entry_delete(entry))
-		err = -EIO;
-
-	efivar_entry_iter_end();
-
-	if (err)
-		return err;
-
-	efivar_unregister(entry);
-
-	/* It's dead Jim.... */
-	return count;
-}
-
-/**
- * efivar_create_sysfs_entry - create a new entry in sysfs
- * @new_var: efivar entry to create
- *
- * Returns 0 on success, negative error code on failure
- */
-static int
-efivar_create_sysfs_entry(struct efivar_entry *new_var)
-{
-	int short_name_size;
-	char *short_name;
-	unsigned long utf8_name_size;
-	efi_char16_t *variable_name = new_var->var.VariableName;
-	int ret;
-
-	/*
-	 * Length of the variable bytes in UTF8, plus the '-' separator,
-	 * plus the GUID, plus trailing NUL
-	 */
-	utf8_name_size = ucs2_utf8size(variable_name);
-	short_name_size = utf8_name_size + 1 + EFI_VARIABLE_GUID_LEN + 1;
-
-	short_name = kmalloc(short_name_size, GFP_KERNEL);
-	if (!short_name)
-		return -ENOMEM;
-
-	ucs2_as_utf8(short_name, variable_name, short_name_size);
-
-	/* This is ugly, but necessary to separate one vendor's
-	   private variables from another's.         */
-	short_name[utf8_name_size] = '-';
-	efi_guid_to_str(&new_var->var.VendorGuid,
-			 short_name + utf8_name_size + 1);
-
-	new_var->kobj.kset = efivars_kset;
-
-	ret = kobject_init_and_add(&new_var->kobj, &efivar_ktype,
-				   NULL, "%s", short_name);
-	kfree(short_name);
-	if (ret) {
-		kobject_put(&new_var->kobj);
-		return ret;
-	}
-
-	kobject_uevent(&new_var->kobj, KOBJ_ADD);
-	__efivar_entry_add(new_var, &efivar_sysfs_list);
-
-	return 0;
-}
-
-static int
-create_efivars_bin_attributes(void)
-{
-	struct bin_attribute *attr;
-	int error;
-
-	/* new_var */
-	attr = kzalloc(sizeof(*attr), GFP_KERNEL);
-	if (!attr)
-		return -ENOMEM;
-
-	attr->attr.name = "new_var";
-	attr->attr.mode = 0200;
-	attr->write = efivar_create;
-	efivars_new_var = attr;
-
-	/* del_var */
-	attr = kzalloc(sizeof(*attr), GFP_KERNEL);
-	if (!attr) {
-		error = -ENOMEM;
-		goto out_free;
-	}
-	attr->attr.name = "del_var";
-	attr->attr.mode = 0200;
-	attr->write = efivar_delete;
-	efivars_del_var = attr;
-
-	sysfs_bin_attr_init(efivars_new_var);
-	sysfs_bin_attr_init(efivars_del_var);
-
-	/* Register */
-	error = sysfs_create_bin_file(&efivars_kset->kobj, efivars_new_var);
-	if (error) {
-		printk(KERN_ERR "efivars: unable to create new_var sysfs file"
-			" due to error %d\n", error);
-		goto out_free;
-	}
-
-	error = sysfs_create_bin_file(&efivars_kset->kobj, efivars_del_var);
-	if (error) {
-		printk(KERN_ERR "efivars: unable to create del_var sysfs file"
-			" due to error %d\n", error);
-		sysfs_remove_bin_file(&efivars_kset->kobj, efivars_new_var);
-		goto out_free;
-	}
-
-	return 0;
-out_free:
-	kfree(efivars_del_var);
-	efivars_del_var = NULL;
-	kfree(efivars_new_var);
-	efivars_new_var = NULL;
-	return error;
-}
-
-static int efivars_sysfs_callback(efi_char16_t *name, efi_guid_t vendor,
-				  unsigned long name_size, void *data)
-{
-	struct efivar_entry *entry;
-
-	entry = kzalloc(sizeof(*entry), GFP_KERNEL);
-	if (!entry)
-		return -ENOMEM;
-
-	memcpy(entry->var.VariableName, name, name_size);
-	memcpy(&(entry->var.VendorGuid), &vendor, sizeof(efi_guid_t));
-
-	efivar_create_sysfs_entry(entry);
-
-	return 0;
-}
-
-static int efivar_sysfs_destroy(struct efivar_entry *entry, void *data)
-{
-	efivar_entry_remove(entry);
-	efivar_unregister(entry);
-	return 0;
-}
-
-static void efivars_sysfs_exit(void)
-{
-	/* Remove all entries and destroy */
-	int err;
-
-	err = efivar_entry_iter(efivar_sysfs_destroy, &efivar_sysfs_list, NULL);
-	if (err) {
-		pr_err("efivars: Failed to destroy sysfs entries\n");
-		return;
-	}
-
-	if (efivars_new_var)
-		sysfs_remove_bin_file(&efivars_kset->kobj, efivars_new_var);
-	if (efivars_del_var)
-		sysfs_remove_bin_file(&efivars_kset->kobj, efivars_del_var);
-	kfree(efivars_new_var);
-	kfree(efivars_del_var);
-	kset_unregister(efivars_kset);
-}
-
-static int efivars_sysfs_init(void)
-{
-	struct kobject *parent_kobj = efivars_kobject();
-	int error = 0;
-
-	/* No efivars has been registered yet */
-	if (!parent_kobj || !efivar_supports_writes())
-		return 0;
-
-	printk(KERN_INFO "EFI Variables Facility v%s %s\n", EFIVARS_VERSION,
-	       EFIVARS_DATE);
-
-	efivars_kset = kset_create_and_add("vars", NULL, parent_kobj);
-	if (!efivars_kset) {
-		printk(KERN_ERR "efivars: Subsystem registration failed.\n");
-		return -ENOMEM;
-	}
-
-	efivar_init(efivars_sysfs_callback, NULL, true, &efivar_sysfs_list);
-
-	error = create_efivars_bin_attributes();
-	if (error) {
-		efivars_sysfs_exit();
-		return error;
-	}
-
-	return 0;
-}
-
-module_init(efivars_sysfs_init);
-module_exit(efivars_sysfs_exit);
diff --git a/drivers/firmware/efi/vars.c b/drivers/firmware/efi/vars.c
index 932435945c85..94de1d0cb4e7 100644
--- a/drivers/firmware/efi/vars.c
+++ b/drivers/firmware/efi/vars.c
@@ -548,36 +548,6 @@ static void efivar_entry_list_del_unlock(struct efivar_entry *entry)
 }
 
 /**
- * __efivar_entry_delete - delete an EFI variable
- * @entry: entry containing EFI variable to delete
- *
- * Delete the variable from the firmware but leave @entry on the
- * variable list.
- *
- * This function differs from efivar_entry_delete() because it does
- * not remove @entry from the variable list. Also, it is safe to be
- * called from within a efivar_entry_iter_begin() and
- * efivar_entry_iter_end() region, unlike efivar_entry_delete().
- *
- * Returns 0 on success, or a converted EFI status code if
- * set_variable() fails.
- */
-int __efivar_entry_delete(struct efivar_entry *entry)
-{
-	efi_status_t status;
-
-	if (!__efivars)
-		return -EINVAL;
-
-	status = __efivars->ops->set_variable(entry->var.VariableName,
-					      &entry->var.VendorGuid,
-					      0, 0, NULL);
-
-	return efi_status_to_err(status);
-}
-EXPORT_SYMBOL_GPL(__efivar_entry_delete);
-
-/**
  * efivar_entry_delete - delete variable and remove entry from list
  * @entry: entry containing variable to delete
  *
@@ -615,213 +585,6 @@ int efivar_entry_delete(struct efivar_entry *entry)
 EXPORT_SYMBOL_GPL(efivar_entry_delete);
 
 /**
- * efivar_entry_set - call set_variable()
- * @entry: entry containing the EFI variable to write
- * @attributes: variable attributes
- * @size: size of @data buffer
- * @data: buffer containing variable data
- * @head: head of variable list
- *
- * Calls set_variable() for an EFI variable. If creating a new EFI
- * variable, this function is usually followed by efivar_entry_add().
- *
- * Before writing the variable, the remaining EFI variable storage
- * space is checked to ensure there is enough room available.
- *
- * If @head is not NULL a lookup is performed to determine whether
- * the entry is already on the list.
- *
- * Returns 0 on success, -EINTR if we can't grab the semaphore,
- * -EEXIST if a lookup is performed and the entry already exists on
- * the list, or a converted EFI status code if set_variable() fails.
- */
-int efivar_entry_set(struct efivar_entry *entry, u32 attributes,
-		     unsigned long size, void *data, struct list_head *head)
-{
-	const struct efivar_operations *ops;
-	efi_status_t status;
-	efi_char16_t *name = entry->var.VariableName;
-	efi_guid_t vendor = entry->var.VendorGuid;
-
-	if (down_interruptible(&efivars_lock))
-		return -EINTR;
-
-	if (!__efivars) {
-		up(&efivars_lock);
-		return -EINVAL;
-	}
-	ops = __efivars->ops;
-	if (head && efivar_entry_find(name, vendor, head, false)) {
-		up(&efivars_lock);
-		return -EEXIST;
-	}
-
-	status = check_var_size(attributes, size + ucs2_strsize(name, 1024));
-	if (status == EFI_SUCCESS || status == EFI_UNSUPPORTED)
-		status = ops->set_variable(name, &vendor,
-					   attributes, size, data);
-
-	up(&efivars_lock);
-
-	return efi_status_to_err(status);
-
-}
-EXPORT_SYMBOL_GPL(efivar_entry_set);
-
-/*
- * efivar_entry_set_nonblocking - call set_variable_nonblocking()
- *
- * This function is guaranteed to not block and is suitable for calling
- * from crash/panic handlers.
- *
- * Crucially, this function will not block if it cannot acquire
- * efivars_lock. Instead, it returns -EBUSY.
- */
-static int
-efivar_entry_set_nonblocking(efi_char16_t *name, efi_guid_t vendor,
-			     u32 attributes, unsigned long size, void *data)
-{
-	const struct efivar_operations *ops;
-	efi_status_t status;
-
-	if (down_trylock(&efivars_lock))
-		return -EBUSY;
-
-	if (!__efivars) {
-		up(&efivars_lock);
-		return -EINVAL;
-	}
-
-	status = check_var_size_nonblocking(attributes,
-					    size + ucs2_strsize(name, 1024));
-	if (status != EFI_SUCCESS) {
-		up(&efivars_lock);
-		return -ENOSPC;
-	}
-
-	ops = __efivars->ops;
-	status = ops->set_variable_nonblocking(name, &vendor, attributes,
-					       size, data);
-
-	up(&efivars_lock);
-	return efi_status_to_err(status);
-}
-
-/**
- * efivar_entry_set_safe - call set_variable() if enough space in firmware
- * @name: buffer containing the variable name
- * @vendor: variable vendor guid
- * @attributes: variable attributes
- * @block: can we block in this context?
- * @size: size of @data buffer
- * @data: buffer containing variable data
- *
- * Ensures there is enough free storage in the firmware for this variable, and
- * if so, calls set_variable(). If creating a new EFI variable, this function
- * is usually followed by efivar_entry_add().
- *
- * Returns 0 on success, -ENOSPC if the firmware does not have enough
- * space for set_variable() to succeed, or a converted EFI status code
- * if set_variable() fails.
- */
-int efivar_entry_set_safe(efi_char16_t *name, efi_guid_t vendor, u32 attributes,
-			  bool block, unsigned long size, void *data)
-{
-	const struct efivar_operations *ops;
-	efi_status_t status;
-	unsigned long varsize;
-
-	if (!__efivars)
-		return -EINVAL;
-
-	ops = __efivars->ops;
-	if (!ops->query_variable_store)
-		return -ENOSYS;
-
-	/*
-	 * If the EFI variable backend provides a non-blocking
-	 * ->set_variable() operation and we're in a context where we
-	 * cannot block, then we need to use it to avoid live-locks,
-	 * since the implication is that the regular ->set_variable()
-	 * will block.
-	 *
-	 * If no ->set_variable_nonblocking() is provided then
-	 * ->set_variable() is assumed to be non-blocking.
-	 */
-	if (!block && ops->set_variable_nonblocking)
-		return efivar_entry_set_nonblocking(name, vendor, attributes,
-						    size, data);
-
-	varsize = size + ucs2_strsize(name, 1024);
-	if (!block) {
-		if (down_trylock(&efivars_lock))
-			return -EBUSY;
-		status = check_var_size_nonblocking(attributes, varsize);
-	} else {
-		if (down_interruptible(&efivars_lock))
-			return -EINTR;
-		status = check_var_size(attributes, varsize);
-	}
-
-	if (status != EFI_SUCCESS) {
-		up(&efivars_lock);
-		return -ENOSPC;
-	}
-
-	status = ops->set_variable(name, &vendor, attributes, size, data);
-
-	up(&efivars_lock);
-
-	return efi_status_to_err(status);
-}
-EXPORT_SYMBOL_GPL(efivar_entry_set_safe);
-
-/**
- * efivar_entry_find - search for an entry
- * @name: the EFI variable name
- * @guid: the EFI variable vendor's guid
- * @head: head of the variable list
- * @remove: should we remove the entry from the list?
- *
- * Search for an entry on the variable list that has the EFI variable
- * name @name and vendor guid @guid. If an entry is found on the list
- * and @remove is true, the entry is removed from the list.
- *
- * The caller MUST call efivar_entry_iter_begin() and
- * efivar_entry_iter_end() before and after the invocation of this
- * function, respectively.
- *
- * Returns the entry if found on the list, %NULL otherwise.
- */
-struct efivar_entry *efivar_entry_find(efi_char16_t *name, efi_guid_t guid,
-				       struct list_head *head, bool remove)
-{
-	struct efivar_entry *entry, *n;
-	int strsize1, strsize2;
-	bool found = false;
-
-	list_for_each_entry_safe(entry, n, head, list) {
-		strsize1 = ucs2_strsize(name, 1024);
-		strsize2 = ucs2_strsize(entry->var.VariableName, 1024);
-		if (strsize1 == strsize2 &&
-		    !memcmp(name, &(entry->var.VariableName), strsize1) &&
-		    !efi_guidcmp(guid, entry->var.VendorGuid)) {
-			found = true;
-			break;
-		}
-	}
-
-	if (!found)
-		return NULL;
-
-	if (remove)
-		list_del(&entry->list);
-
-	return entry;
-}
-EXPORT_SYMBOL_GPL(efivar_entry_find);
-
-/**
  * efivar_entry_size - obtain the size of a variable
  * @entry: entry for this variable
  * @size: location to store the variable's size
@@ -1011,30 +774,6 @@ out:
 EXPORT_SYMBOL_GPL(efivar_entry_set_get_size);
 
 /**
- * efivar_entry_iter_begin - begin iterating the variable list
- *
- * Lock the variable list to prevent entry insertion and removal until
- * efivar_entry_iter_end() is called. This function is usually used in
- * conjunction with __efivar_entry_iter() or efivar_entry_iter().
- */
-int efivar_entry_iter_begin(void)
-{
-	return down_interruptible(&efivars_lock);
-}
-EXPORT_SYMBOL_GPL(efivar_entry_iter_begin);
-
-/**
- * efivar_entry_iter_end - finish iterating the variable list
- *
- * Unlock the variable list and allow modifications to the list again.
- */
-void efivar_entry_iter_end(void)
-{
-	up(&efivars_lock);
-}
-EXPORT_SYMBOL_GPL(efivar_entry_iter_end);
-
-/**
  * efivar_entry_iter - iterate over variable list
  * @func: callback function
  * @head: head of variable list
@@ -1054,7 +793,7 @@ int efivar_entry_iter(int (*func)(struct efivar_entry *, void *),
 	struct efivar_entry *entry, *n;
 	int err = 0;
 
-	err = efivar_entry_iter_begin();
+	err = down_interruptible(&efivars_lock);
 	if (err)
 		return err;
 
@@ -1063,7 +802,7 @@ int efivar_entry_iter(int (*func)(struct efivar_entry *, void *),
 		if (err)
 			break;
 	}
-	efivar_entry_iter_end();
+	up(&efivars_lock);
 
 	return err;
 }
diff --git a/include/linux/efi.h b/include/linux/efi.h
index 93ce85a14a46..10ef0a0d5e9a 100644
--- a/include/linux/efi.h
+++ b/include/linux/efi.h
@@ -1045,12 +1045,6 @@ struct efivar_entry {
 	struct kobject kobj;
 };
 
-static inline void
-efivar_unregister(struct efivar_entry *var)
-{
-	kobject_put(&var->kobj);
-}
-
 int efivars_register(struct efivars *efivars,
 		     const struct efivar_operations *ops,
 		     struct kobject *kobject);
@@ -1064,8 +1058,6 @@ int efivar_init(int (*func)(efi_char16_t *, efi_guid_t, unsigned long, void *),
 int efivar_entry_add(struct efivar_entry *entry, struct list_head *head);
 void __efivar_entry_add(struct efivar_entry *entry, struct list_head *head);
 void efivar_entry_remove(struct efivar_entry *entry);
-
-int __efivar_entry_delete(struct efivar_entry *entry);
 int efivar_entry_delete(struct efivar_entry *entry);
 
 int efivar_entry_size(struct efivar_entry *entry, unsigned long *size);
@@ -1073,22 +1065,12 @@ int __efivar_entry_get(struct efivar_entry *entry, u32 *attributes,
 		       unsigned long *size, void *data);
 int efivar_entry_get(struct efivar_entry *entry, u32 *attributes,
 		     unsigned long *size, void *data);
-int efivar_entry_set(struct efivar_entry *entry, u32 attributes,
-		     unsigned long size, void *data, struct list_head *head);
 int efivar_entry_set_get_size(struct efivar_entry *entry, u32 attributes,
 			      unsigned long *size, void *data, bool *set);
-int efivar_entry_set_safe(efi_char16_t *name, efi_guid_t vendor, u32 attributes,
-			  bool block, unsigned long size, void *data);
-
-int efivar_entry_iter_begin(void);
-void efivar_entry_iter_end(void);
 
 int efivar_entry_iter(int (*func)(struct efivar_entry *, void *),
 		      struct list_head *head, void *data);
 
-struct efivar_entry *efivar_entry_find(efi_char16_t *name, efi_guid_t guid,
-				       struct list_head *head, bool remove);
-
 bool efivar_validate(efi_guid_t vendor, efi_char16_t *var_name, u8 *data,
 		     unsigned long data_size);
 bool efivar_variable_is_removable(efi_guid_t vendor, const char *name,