lock_isa_dma_channel
status_t (*lock_isa_dma_channel) (long channel);
&lock_isa_dma_channel,
if ((rc=gISA->lock_isa_dma_channel(dev->dma8)) == B_OK &&
(rc=gISA->lock_isa_dma_channel(dev->dma16)) == B_OK) {