dmaengine: remove DMA unmap from drivers

[firefly-linux-kernel-4.4.55.git] / drivers / dma / txx9dmac.c

diff --git a/drivers/dma/txx9dmac.c b/drivers/dma/txx9dmac.c
index 22a0b6c78c774cbb729809022207f1e36febcbca..6f2729874016c5469d6926d218b095567acc60c5 100644 (file)
--- a/drivers/dma/txx9dmac.c
+++ b/drivers/dma/txx9dmac.c
@@ -420,30 +420,6 @@ txx9dmac_descriptor_complete(struct txx9dmac_chan *dc,
        list_move(&desc->desc_node, &dc->free_list);
 
        dma_descriptor_unmap(txd);
-       if (!ds) {
-               dma_addr_t dmaaddr;
-               if (!(txd->flags & DMA_COMPL_SKIP_DEST_UNMAP)) {
-                       dmaaddr = is_dmac64(dc) ?
-                               desc->hwdesc.DAR : desc->hwdesc32.DAR;
-                       if (txd->flags & DMA_COMPL_DEST_UNMAP_SINGLE)
-                               dma_unmap_single(chan2parent(&dc->chan),
-                                       dmaaddr, desc->len, DMA_FROM_DEVICE);
-                       else
-                               dma_unmap_page(chan2parent(&dc->chan),
-                                       dmaaddr, desc->len, DMA_FROM_DEVICE);
-               }
-               if (!(txd->flags & DMA_COMPL_SKIP_SRC_UNMAP)) {
-                       dmaaddr = is_dmac64(dc) ?
-                               desc->hwdesc.SAR : desc->hwdesc32.SAR;
-                       if (txd->flags & DMA_COMPL_SRC_UNMAP_SINGLE)
-                               dma_unmap_single(chan2parent(&dc->chan),
-                                       dmaaddr, desc->len, DMA_TO_DEVICE);
-                       else
-                               dma_unmap_page(chan2parent(&dc->chan),
-                                       dmaaddr, desc->len, DMA_TO_DEVICE);
-               }
-       }
-
        /*
         * The API requires that no submissions are done from a
         * callback, so we don't need to drop the lock here