dmaengine: dma-jz4780: Use dma_set_residue()

This is the standard method provided by dmaengine header.

Signed-off-by: Daniel Silsby <dansilsby@gmail.com>
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Tested-by: Mathieu Malaterre <malat@debian.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>

diff --git a/drivers/dma/dma-jz4780.c b/drivers/dma/dma-jz4780.c
index b73d961..e1bb93d 100644 (file)
--- a/drivers/dma/dma-jz4780.c
+++ b/drivers/dma/dma-jz4780.c
@@ -639,6 +639,7 @@ static enum dma_status jz4780_dma_tx_status(struct dma_chan *chan,
        struct virt_dma_desc *vdesc;
        enum dma_status status;
        unsigned long flags;
+       unsigned long residue = 0;
 
        status = dma_cookie_status(chan, cookie, txstate);
        if ((status == DMA_COMPLETE) || (txstate == NULL))
@@ -649,13 +650,13 @@ static enum dma_status jz4780_dma_tx_status(struct dma_chan *chan,
        vdesc = vchan_find_desc(&jzchan->vchan, cookie);
        if (vdesc) {
                /* On the issued list, so hasn't been processed yet */
-               txstate->residue = jz4780_dma_desc_residue(jzchan,
+               residue = jz4780_dma_desc_residue(jzchan,
                                        to_jz4780_dma_desc(vdesc), 0);
        } else if (cookie == jzchan->desc->vdesc.tx.cookie) {
-               txstate->residue = jz4780_dma_desc_residue(jzchan, jzchan->desc,
+               residue = jz4780_dma_desc_residue(jzchan, jzchan->desc,
                                        jzchan->curr_hwdesc + 1);
-       } else
-               txstate->residue = 0;
+       }
+       dma_set_residue(txstate, residue);
 
        if (vdesc && jzchan->desc && vdesc == &jzchan->desc->vdesc
            && jzchan->desc->status & (JZ_DMA_DCS_AR | JZ_DMA_DCS_HLT))