opvxa1200 freeze in modprobe

when loading this kernel module in:
uname -a
Linux mistic 3.19.0-15-generic #15-Ubuntu SMP Thu Apr 16 23:32:37 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

modprobe freezes (impossible to kill), the hardware gets detected but impossible to use, after some googling:
http://openvox.cn/forum/a400-800-1200-series/2120-problems-installing-a-a800p-card-in-debian.html

I found that there's some missing code in:
/usr/src/dahdi-2.10.0.1~dfsg-1ubuntu2/drivers/dahdi/opvxa1200/base.c

in: static int wctdm_initialize(struct wctdm *wc)
after int x;

        wc->ddev = dahdi_create_device(); //Dennis
        if (!wc->ddev)
        return -ENOMEM;

With this fix everything works ok.
------------------------------
Description: Ubuntu 15.04
Release: 15.04

dahdi-dkms:
  Instalado: 1:2.10.0.1~dfsg-1ubuntu2
  Candidato: 1:2.10.0.1~dfsg-1ubuntu2