update for newer kernels

[netpipe]

modprobe dm2 --allow-unsupported
modprobe: ERROR: could not insert 'dm2': Key was rejected by service

after make install i got that message but it did install and is findable :)

line 751 edit

#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 16, 0)
// no need to kzalloc minivosc_device separately, if the sizeof is included here
if (snd_card_create(index, id, THIS_MODULE, 0, &card) < 0) {
printk("%s snd_card_create failed\n", FUNCTION);
return -ENOMEM;
}
#else
if (snd_card_new(index, dev, id, THIS_MODULE,0, &card) < 0) {
printk("%s snd_card_create failed\n", FUNCTION);
return -ENOMEM;
}
//ret = snd_card_new(&devptr->dev, index[dev], id[dev], THIS_MODULE,0, &card);
#endif

[netpipe]

https://github.com/netpipe/ELFTools/blob/main/signing/sign-file.c

[netpipe]

https://computerlinguist.org/make-dkms-sign-kernel-modules-for-secure-boot-on-ubuntu-1604.html
https://www.linuxjournal.com/article/7130

were also both helpful