ATM_DF_REMOVED
BUG_ON(!test_bit(ATM_DF_REMOVED, &dev->flags));
if (test_bit(ATM_DF_REMOVED, &dev->flags) ||
BUG_ON(test_bit(ATM_DF_REMOVED, &dev->flags));
set_bit(ATM_DF_REMOVED, &dev->flags);