Snapper driver does not attach with sound card on Mac Mini

Hello
Using NetBSD 3.1 kernel on a Mac Mini, the snapper driver
does not
attach to the
sound card. I see in my dmesg something like :
unconfigured device at obio0 offset 0x10000

Doing the quick hack  of commenting some lines mentionned
here
http://www-128.ibm.com/developerworks/power/libr
ary/pa-macmini2/
the driver does appears
snapper0 at obio0 offset 0x10000: irq 30,1,2

Is this problem known or fixed in current ?

Manu