[IOAT]: Remove redundant struct member to avoid descriptor cache miss

[pandora-kernel.git] / drivers / dma / ioatdma.c

diff --git a/drivers/dma/ioatdma.c b/drivers/dma/ioatdma.c
index 5fbe56b..2d1f178 100644 (file)
--- a/drivers/dma/ioatdma.c
+++ b/drivers/dma/ioatdma.c
@@ -347,8 +347,7 @@ ioat_dma_prep_memcpy(struct dma_chan *chan, size_t len, int int_en)
        new->async_tx.ack = 0; /* client is in control of this ack */
        new->async_tx.cookie = -EBUSY;
 
-       pci_unmap_len_set(new, src_len, orig_len);
-       pci_unmap_len_set(new, dst_len, orig_len);
+       pci_unmap_len_set(new, len, orig_len);
        spin_unlock_bh(&ioat_chan->desc_lock);
 
        return new ? &new->async_tx : NULL;
@@ -423,11 +422,11 @@ static void ioat_dma_memcpy_cleanup(struct ioat_dma_chan *chan)
                        */
                        pci_unmap_page(chan->device->pdev,
                                        pci_unmap_addr(desc, dst),
-                                       pci_unmap_len(desc, dst_len),
+                                       pci_unmap_len(desc, len),
                                        PCI_DMA_FROMDEVICE);
                        pci_unmap_page(chan->device->pdev,
                                        pci_unmap_addr(desc, src),
-                                       pci_unmap_len(desc, src_len),
+                                       pci_unmap_len(desc, len),
                                        PCI_DMA_TODEVICE);
                }