Hello, I have taken another look also at the implementation of the function “aac_comm_init”. http://elixir.free-electrons.com/linux/v4.14-rc7/source/drivers/scsi/aacraid/comminit.c#L333 https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/tree/drivers/scsi/aacraid/comminit.c?id=fa8785e862ef644f742558f1a8c91eca6f3f0004#n345 Can it be that the description for the possible return values is questionable in the corresponding comment block at the moment? Regards, Markus