diff --git a/drivers/firmware/efivars.c b/drivers/firmware/efivars.c
index c6281cc..1324984 100644
--- a/drivers/firmware/efivars.c
+++ b/drivers/firmware/efivars.c
@@ -409,7 +409,7 @@
 };
 
 static ssize_t
-dummy(struct subsystem *sub, char *buf)
+dummy(struct kset *kset, char *buf)
 {
 	return -ENODEV;
 }
@@ -422,7 +422,7 @@
 
 
 static ssize_t
-efivar_create(struct subsystem *sub, const char *buf, size_t count)
+efivar_create(struct kset *kset, const char *buf, size_t count)
 {
 	struct efi_variable *new_var = (struct efi_variable *)buf;
 	struct efivar_entry *search_efivar, *n;
@@ -480,7 +480,7 @@
 }
 
 static ssize_t
-efivar_delete(struct subsystem *sub, const char *buf, size_t count)
+efivar_delete(struct kset *kset, const char *buf, size_t count)
 {
 	struct efi_variable *del_var = (struct efi_variable *)buf;
 	struct efivar_entry *search_efivar, *n;
@@ -551,11 +551,11 @@
  * the efivars driver
  */
 static ssize_t
-systab_read(struct subsystem *entry, char *buf)
+systab_read(struct kset *kset, char *buf)
 {
 	char *str = buf;
 
-	if (!entry || !buf)
+	if (!kset || !buf)
 		return -EINVAL;
 
 	if (efi.mps != EFI_INVALID_TABLE_ADDR)
@@ -687,7 +687,7 @@
 		goto out_free;
 	}
 
-	kset_set_kset_s(&vars_subsys, efi_subsys);
+	kobj_set_kset_s(&vars_subsys, efi_subsys);
 
 	error = subsystem_register(&vars_subsys);