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efivars: handle errors from register_efivars()

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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>
This commit is contained in:
Dan Carpenter 2011-03-18 10:12:38 +03:00 committed by Greg Kroah-Hartman
parent 051d51bc6a
commit 3116aabc81
1 changed files with 9 additions and 2 deletions
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11
drivers/firmware/efivars.c
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@ -803,6 +803,8 @@ efivars_init(void)
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 @@ efivars_init(void)
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;
}