diff options
| author | Dave Airlie <airlied@redhat.com> | 2020-09-17 14:18:51 +1000 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2020-09-17 16:07:11 +1000 |
| commit | b40be05ed255d9a0257fb66ab2728ecca2c9d597 (patch) | |
| tree | bf69d734e4413c24ce2e60f273d1de637a4aea5e /drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c | |
| parent | 818280d5adf1d80e78f95821815148abe9407e14 (diff) | |
| parent | be0704beb229431f206fee3ddd65fa2c5eebdce3 (diff) | |
Merge branch 'for-5.10-drm-sg-fix' of https://github.com/mszyprow/linux into drm-next
Please pull a set of fixes for various DRM drivers that finally resolve
incorrect usage of the scatterlists (struct sg_table nents and orig_nents
entries), what causes issues when IOMMU is used.
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Marek Szyprowski <m.szyprowski@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200910080505.24456-1-m.szyprowski@samsung.com
Diffstat (limited to 'drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c')
| -rw-r--r-- | drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c | 17 |
1 files changed, 4 insertions, 13 deletions
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c b/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c index c7f10b2c93d2..13c31e2d7254 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c @@ -362,8 +362,7 @@ static void vmw_ttm_unmap_from_dma(struct vmw_ttm_tt *vmw_tt) { struct device *dev = vmw_tt->dev_priv->dev->dev; - dma_unmap_sg(dev, vmw_tt->sgt.sgl, vmw_tt->sgt.nents, - DMA_BIDIRECTIONAL); + dma_unmap_sgtable(dev, &vmw_tt->sgt, DMA_BIDIRECTIONAL, 0); vmw_tt->sgt.nents = vmw_tt->sgt.orig_nents; } @@ -383,16 +382,8 @@ static void vmw_ttm_unmap_from_dma(struct vmw_ttm_tt *vmw_tt) static int vmw_ttm_map_for_dma(struct vmw_ttm_tt *vmw_tt) { struct device *dev = vmw_tt->dev_priv->dev->dev; - int ret; - - ret = dma_map_sg(dev, vmw_tt->sgt.sgl, vmw_tt->sgt.orig_nents, - DMA_BIDIRECTIONAL); - if (unlikely(ret == 0)) - return -ENOMEM; - vmw_tt->sgt.nents = ret; - - return 0; + return dma_map_sgtable(dev, &vmw_tt->sgt, DMA_BIDIRECTIONAL, 0); } /** @@ -449,10 +440,10 @@ static int vmw_ttm_map_dma(struct vmw_ttm_tt *vmw_tt) if (unlikely(ret != 0)) goto out_sg_alloc_fail; - if (vsgt->num_pages > vmw_tt->sgt.nents) { + if (vsgt->num_pages > vmw_tt->sgt.orig_nents) { uint64_t over_alloc = sgl_size * (vsgt->num_pages - - vmw_tt->sgt.nents); + vmw_tt->sgt.orig_nents); ttm_mem_global_free(glob, over_alloc); vmw_tt->sg_alloc_size -= over_alloc; |