USB audio device on Raspberry Pi - link_elf: symbol isa_dmastatus undefined

[Hans Petter Selasky]

On 04/25/14 17:44, Scott Aitken wrote:
> Hi all,
>
> I'm hoping to use my RPi/FreeBSD as an Airplay device to my amplifier which
> presents a USB DAC.
>

Hi,

Audio devices which use ISOCHRONOUS data transport are not supported i 
FreeBSD, because the RPi uses very small buffers and has to handle 8000 
IRQ/s typically for ISOC transfers.

--HPS