DMA_CHAN_NOT_ALLOTED
vout->vrfb_dma_tx.req_status = DMA_CHAN_NOT_ALLOTED;
vout->vrfb_dma_tx.req_status = DMA_CHAN_NOT_ALLOTED;
if (vout->vrfb_dma_tx.req_status == DMA_CHAN_NOT_ALLOTED)
vout->vrfb_dma_tx.req_status = DMA_CHAN_NOT_ALLOTED;