efivars: handle errors from register_efivars()
We should unwind and return an error if register_efivars() fails.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Acked-by: Mike Waychison <mikew@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/firmware/efivars.c b/drivers/firmware/efivars.c
index ff2fe40..5d1ec68 100644
--- a/drivers/firmware/efivars.c
+++ b/drivers/firmware/efivars.c
@@ -803,6 +803,8 @@
ops.set_variable = efi.set_variable;
ops.get_next_variable = efi.get_next_variable;
error = register_efivars(&__efivars, &ops, efi_kobj);
+ if (error)
+ goto err_put;
/* Don't forget the systab entry */
error = sysfs_create_group(efi_kobj, &efi_subsys_attr_group);
@@ -810,10 +812,15 @@
printk(KERN_ERR
"efivars: Sysfs attribute export failed with error %d.\n",
error);
- unregister_efivars(&__efivars);
- kobject_put(efi_kobj);
+ goto err_unregister;
}
+ return 0;
+
+err_unregister:
+ unregister_efivars(&__efivars);
+err_put:
+ kobject_put(efi_kobj);
return error;
}