mISDN config problem

hello i was succesfull in building the 2.6.31.3 kernel in order to install a new misdn driver. the tar file is git-11ae851f95a3f795d6f8caa26e889f2426dd93f1.tar.gz. after configuring, make and installing, bsc_hack reported 3 recognized devices. fine! but after restarting, lsmod said, no hfcmulti is loaded. modprobe hfcmulti didn't work. dmesg said: [ 4752.384476] base_sock_release(f6ddd500) sk=f73be000 [ 4763.947599] hfcmulti: Unknown parameter `dslot'

what did i forget?

T.