ti_csi2rx_drain_dma
ti_csi2rx_drain_dma(ctx);
static int ti_csi2rx_drain_dma(struct ti_csi2rx_ctx *ctx);
if (ti_csi2rx_drain_dma(ctx))
if (ti_csi2rx_drain_dma(ctx))
ret = ti_csi2rx_drain_dma(ctx);