DMA_BUFFER_ACK
input->dma->stat, DMA_BUFFER_ACK(output->dma));
output->dma->stat, DMA_BUFFER_ACK(input->dma));
DMA_BUFFER_ACK(dma));
ddbwritel(io->port->dev, 0, DMA_BUFFER_ACK(dma));
ddbwritel(dev, 0, DMA_BUFFER_ACK(output->dma));
ddbwritel(dev, 0, DMA_BUFFER_ACK(input->dma));
DMA_BUFFER_ACK(output->dma));
ddbwritel(dev, stat, DMA_BUFFER_ACK(input->dma));
DMA_BUFFER_ACK(input->dma));