for (i = 0; i < ARRAY_SIZE(mbc_irq_handlers); i++)
pcf50633_free_irq(mbc->pcf, mbc_irq_handlers[i]);
+ sysfs_remove_group(&pdev->dev.kobj, &mbc_attr_group);
power_supply_unregister(&mbc->usb);
power_supply_unregister(&mbc->adapter);
power_supply_unregister(&mbc->ac);