DMA: txx9dmac: use dma_unmap_single if DMA_COMPL_{SRC,DEST}_UNMAP_SINGLE set

This patch does not change actual behaviour since dma_unmap_page is just
an alias of dma_unmap_single on MIPS.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Cc: Ralf Baechle <ralf@linux-mips.org>
Acked-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 12 insertions, 8 deletions

diff --git a/drivers/dma/txx9dmac.c b/drivers/dma/txx9dmac.c
index 9aa9ea9822c8..88dab52926f4 100644
--- a/drivers/dma/txx9dmac.c
+++ b/drivers/dma/txx9dmac.c
@@ -432,23 +432,27 @@ txx9dmac_descriptor_complete(struct txx9dmac_chan *dc,
         list_splice_init(&txd->tx_list, &dc->free_list);
         list_move(&desc->desc_node, &dc->free_list);
 
-        /*
-         * We use dma_unmap_page() regardless of how the buffers were
-         * mapped before they were submitted...
-         */
         if (!ds) {
                 dma_addr_t dmaaddr;
                 if (!(txd->flags & DMA_COMPL_SKIP_DEST_UNMAP)) {
                         dmaaddr = is_dmac64(dc) ?
                                 desc->hwdesc.DAR : desc->hwdesc32.DAR;
-                        dma_unmap_page(chan2parent(&dc->chan), dmaaddr,
-                                       desc->len, DMA_FROM_DEVICE);
+                        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;
-                        dma_unmap_page(chan2parent(&dc->chan), dmaaddr,
-                                       desc->len, DMA_TO_DEVICE);
+                        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);
                 }
         }