EDMA_MAX_RD_CH
dw->rd_ch_cnt = min_t(u16, dw->rd_ch_cnt, EDMA_MAX_RD_CH);
struct dw_edma_block ll_rd[EDMA_MAX_RD_CH];
struct dw_edma_block dt_rd[EDMA_MAX_RD_CH];
if (nr >= EDMA_MAX_WR_CH + EDMA_MAX_RD_CH)
!pci->edma.ll_rd_cnt || pci->edma.ll_rd_cnt > EDMA_MAX_RD_CH)
struct dw_edma_region ll_region_rd[EDMA_MAX_RD_CH];
struct dw_edma_region dt_region_rd[EDMA_MAX_RD_CH];