dma_done
int dma_done;
if ((dma_done = dma_ready()) == 0)
int dma_done;
if ((dma_done = dma_ready()) == 0) {
int dma_done;
if ((dma_done = dma_ready()) == 0) {
int dma_done;
if (!(dma_done = dma_ready()))
int dma_done;
if (!(dma_done = dma_ready())) {
int dma_done;
if (!(dma_done = dma_ready())) {
*len = dma_done();
int dma_done(void);
goto dma_done;
dma_done:
goto dma_done;
dma_done: