ep93xx_descs
struct ep93xx_descs *descs;
dma_free_coherent(dev, sizeof(struct ep93xx_descs), ep->descs,
ep->descs = dma_alloc_coherent(dev, sizeof(struct ep93xx_descs),
addr = ep->descs_dma_addr + offsetof(struct ep93xx_descs, rdesc);
addr = ep->descs_dma_addr + offsetof(struct ep93xx_descs, rstat);
addr = ep->descs_dma_addr + offsetof(struct ep93xx_descs, tdesc);
addr = ep->descs_dma_addr + offsetof(struct ep93xx_descs, tstat);