1 files changed, 6 insertions, 9 deletions

diff --git a/drivers/dma/dmaengine.c b/drivers/dma/dmaengine.c
index 8db0e7f9d3f4..d6dc70fd7527 100644
--- a/drivers/dma/dmaengine.c
+++ b/drivers/dma/dmaengine.c
@@ -362,7 +362,6 @@ int dma_async_device_register(struct dma_device *device)
 
         BUG_ON(!device->device_alloc_chan_resources);
         BUG_ON(!device->device_free_chan_resources);
-        BUG_ON(!device->device_dependency_added);
         BUG_ON(!device->device_is_tx_complete);
         BUG_ON(!device->device_issue_pending);
         BUG_ON(!device->dev);
@@ -479,7 +478,8 @@ dma_async_memcpy_buf_to_buf(struct dma_chan *chan, void *dest,
 
         dma_src = dma_map_single(dev->dev, src, len, DMA_TO_DEVICE);
         dma_dest = dma_map_single(dev->dev, dest, len, DMA_FROM_DEVICE);
-        tx = dev->device_prep_dma_memcpy(chan, dma_dest, dma_src, len, 0);
+        tx = dev->device_prep_dma_memcpy(chan, dma_dest, dma_src, len,
+                                         DMA_CTRL_ACK);
 
         if (!tx) {
                 dma_unmap_single(dev->dev, dma_src, len, DMA_TO_DEVICE);
@@ -487,7 +487,6 @@ dma_async_memcpy_buf_to_buf(struct dma_chan *chan, void *dest,
                 return -ENOMEM;
         }
 
-        tx->ack = 1;
         tx->callback = NULL;
         cookie = tx->tx_submit(tx);
 
@@ -525,7 +524,8 @@ dma_async_memcpy_buf_to_pg(struct dma_chan *chan, struct page *page,
 
         dma_src = dma_map_single(dev->dev, kdata, len, DMA_TO_DEVICE);
         dma_dest = dma_map_page(dev->dev, page, offset, len, DMA_FROM_DEVICE);
-        tx = dev->device_prep_dma_memcpy(chan, dma_dest, dma_src, len, 0);
+        tx = dev->device_prep_dma_memcpy(chan, dma_dest, dma_src, len,
+                                         DMA_CTRL_ACK);
 
         if (!tx) {
                 dma_unmap_single(dev->dev, dma_src, len, DMA_TO_DEVICE);
@@ -533,7 +533,6 @@ dma_async_memcpy_buf_to_pg(struct dma_chan *chan, struct page *page,
                 return -ENOMEM;
         }
 
-        tx->ack = 1;
         tx->callback = NULL;
         cookie = tx->tx_submit(tx);
 
@@ -574,7 +573,8 @@ dma_async_memcpy_pg_to_pg(struct dma_chan *chan, struct page *dest_pg,
         dma_src = dma_map_page(dev->dev, src_pg, src_off, len, DMA_TO_DEVICE);
         dma_dest = dma_map_page(dev->dev, dest_pg, dest_off, len,
                                 DMA_FROM_DEVICE);
-        tx = dev->device_prep_dma_memcpy(chan, dma_dest, dma_src, len, 0);
+        tx = dev->device_prep_dma_memcpy(chan, dma_dest, dma_src, len,
+                                         DMA_CTRL_ACK);
 
         if (!tx) {
                 dma_unmap_page(dev->dev, dma_src, len, DMA_TO_DEVICE);
@@ -582,7 +582,6 @@ dma_async_memcpy_pg_to_pg(struct dma_chan *chan, struct page *dest_pg,
                 return -ENOMEM;
         }
 
-        tx->ack = 1;
         tx->callback = NULL;
         cookie = tx->tx_submit(tx);
 
@@ -600,8 +599,6 @@ void dma_async_tx_descriptor_init(struct dma_async_tx_descriptor *tx,
 {
         tx->chan = chan;
         spin_lock_init(&tx->lock);
-        INIT_LIST_HEAD(&tx->depend_node);
-        INIT_LIST_HEAD(&tx->depend_list);
 }
 EXPORT_SYMBOL(dma_async_tx_descriptor_init);