dmaengine: remove DMA unmap from drivers

[~andy/linux] / drivers / dma / mv_xor.c

diff --git a/drivers/dma/mv_xor.c b/drivers/dma/mv_xor.c
index 536dcb8ba5fdfe69ed5f726fc6b5897f00266698..17326e780e23a4cdcea94ed79a726ea80579ae3a 100644 (file)
--- a/drivers/dma/mv_xor.c
+++ b/drivers/dma/mv_xor.c
@@ -60,14 +60,6 @@ static u32 mv_desc_get_dest_addr(struct mv_xor_desc_slot *desc)
        return hw_desc->phy_dest_addr;
 }
 
-static u32 mv_desc_get_src_addr(struct mv_xor_desc_slot *desc,
-                               int src_idx)
-{
-       struct mv_xor_desc *hw_desc = desc->hw_desc;
-       return hw_desc->phy_src_addr[mv_phy_src_idx(src_idx)];
-}
-
-
 static void mv_desc_set_byte_count(struct mv_xor_desc_slot *desc,
                                   u32 byte_count)
 {
@@ -278,42 +270,9 @@ mv_xor_run_tx_complete_actions(struct mv_xor_desc_slot *desc,
                        desc->async_tx.callback(
                                desc->async_tx.callback_param);
 
-               /* unmap dma addresses
-                * (unmap_single vs unmap_page?)
-                */
-               if (desc->group_head && desc->unmap_len) {
-                       struct mv_xor_desc_slot *unmap = desc->group_head;
-                       struct device *dev = mv_chan_to_devp(mv_chan);
-                       u32 len = unmap->unmap_len;
-                       enum dma_ctrl_flags flags = desc->async_tx.flags;
-                       u32 src_cnt;
-                       dma_addr_t addr;
-                       dma_addr_t dest;
-
-                       src_cnt = unmap->unmap_src_cnt;
-                       dest = mv_desc_get_dest_addr(unmap);
-                       if (!(flags & DMA_COMPL_SKIP_DEST_UNMAP)) {
-                               enum dma_data_direction dir;
-
-                               if (src_cnt > 1) /* is xor ? */
-                                       dir = DMA_BIDIRECTIONAL;
-                               else
-                                       dir = DMA_FROM_DEVICE;
-                               dma_unmap_page(dev, dest, len, dir);
-                       }
-
-                       if (!(flags & DMA_COMPL_SKIP_SRC_UNMAP)) {
-                               while (src_cnt--) {
-                                       addr = mv_desc_get_src_addr(unmap,
-                                                                   src_cnt);
-                                       if (addr == dest)
-                                               continue;
-                                       dma_unmap_page(dev, addr, len,
-                                                      DMA_TO_DEVICE);
-                               }
-                       }
+               dma_descriptor_unmap(&desc->async_tx);
+               if (desc->group_head)
                        desc->group_head = NULL;
-               }
        }
 
        /* run dependent operations */