From e727f5cde90d5a8b92a1ffa49c636a3790301469 Mon Sep 17 00:00:00 2001 From: Roland Dreier Date: Mon, 22 Jun 2009 23:07:56 -0700 Subject: mlx4_core: Fix dma_sync_single_for_cpu() with matching for_device() calls Commit 5d23a1d2 ("net: replace dma_sync_single with dma_sync_single_for_cpu") replaced uses of the deprectated function dma_sync_single() with calls to dma_sync_single_for_cpu(). However, to be correct, the code should do a sync for_cpu() before touching the memory and for_device() after it's done. Signed-off-by: Roland Dreier --- drivers/net/mlx4/mr.c | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) (limited to 'drivers/net/mlx4/mr.c') diff --git a/drivers/net/mlx4/mr.c b/drivers/net/mlx4/mr.c index 5887e4764d22..f96948be0a44 100644 --- a/drivers/net/mlx4/mr.c +++ b/drivers/net/mlx4/mr.c @@ -399,11 +399,14 @@ static int mlx4_write_mtt_chunk(struct mlx4_dev *dev, struct mlx4_mtt *mtt, if (!mtts) return -ENOMEM; + dma_sync_single_for_cpu(&dev->pdev->dev, dma_handle, + npages * sizeof (u64), DMA_TO_DEVICE); + for (i = 0; i < npages; ++i) mtts[i] = cpu_to_be64(page_list[i] | MLX4_MTT_FLAG_PRESENT); - dma_sync_single_for_cpu(&dev->pdev->dev, dma_handle, - npages * sizeof (u64), DMA_TO_DEVICE); + dma_sync_single_for_device(&dev->pdev->dev, dma_handle, + npages * sizeof (u64), DMA_TO_DEVICE); return 0; } @@ -547,11 +550,14 @@ int mlx4_map_phys_fmr(struct mlx4_dev *dev, struct mlx4_fmr *fmr, u64 *page_list /* Make sure MPT status is visible before writing MTT entries */ wmb(); + dma_sync_single_for_cpu(&dev->pdev->dev, fmr->dma_handle, + npages * sizeof(u64), DMA_TO_DEVICE); + for (i = 0; i < npages; ++i) fmr->mtts[i] = cpu_to_be64(page_list[i] | MLX4_MTT_FLAG_PRESENT); - dma_sync_single_for_cpu(&dev->pdev->dev, fmr->dma_handle, - npages * sizeof(u64), DMA_TO_DEVICE); + dma_sync_single_for_device(&dev->pdev->dev, fmr->dma_handle, + npages * sizeof(u64), DMA_TO_DEVICE); fmr->mpt->key = cpu_to_be32(key); fmr->mpt->lkey = cpu_to_be32(key); -- cgit v1.2.2