diff options
| author | Christoph Hellwig <hch@lst.de> | 2019-01-05 09:01:08 +0100 |
|---|---|---|
| committer | Thomas Hellstrom <thellstrom@vmware.com> | 2019-01-29 12:30:24 +0100 |
| commit | 05f9467e70ed7c9cd19fd3d42346941cdc03eef3 (patch) | |
| tree | 455502d8cdcaf2e929fbbfc7d7f61b4d3554c2b4 /drivers/gpu | |
| parent | drm/vmwgfx: fix the check when to use dma_alloc_coherent (diff) | |
| download | linux-05f9467e70ed7c9cd19fd3d42346941cdc03eef3.tar.xz linux-05f9467e70ed7c9cd19fd3d42346941cdc03eef3.zip | |
drm/vmwgfx: unwind spaghetti code in vmw_dma_select_mode
Just use a simple if/else chain to select the DMA mode.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/vmwgfx/vmwgfx_drv.c | 25 |
1 files changed, 6 insertions, 19 deletions
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c index 1456101e67a9..3e2bcff34032 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c @@ -566,39 +566,26 @@ static int vmw_dma_select_mode(struct vmw_private *dev_priv) [vmw_dma_map_populate] = "Keeping DMA mappings.", [vmw_dma_map_bind] = "Giving up DMA mappings early."}; - if (intel_iommu_enabled) { + if (vmw_force_coherent) + dev_priv->map_mode = vmw_dma_alloc_coherent; + else if (intel_iommu_enabled) dev_priv->map_mode = vmw_dma_map_populate; - goto out_fixup; - } - - if (!(vmw_force_iommu || vmw_force_coherent)) { + else if (!vmw_force_iommu) dev_priv->map_mode = vmw_dma_phys; - DRM_INFO("DMA map mode: %s\n", names[dev_priv->map_mode]); - return 0; - } - -#ifdef CONFIG_SWIOTLB - if (swiotlb_nr_tbl()) + else if (IS_ENABLED(CONFIG_SWIOTLB) && swiotlb_nr_tbl()) dev_priv->map_mode = vmw_dma_alloc_coherent; else -#endif dev_priv->map_mode = vmw_dma_map_populate; -out_fixup: - if (dev_priv->map_mode == vmw_dma_map_populate && - vmw_restrict_iommu) + if (dev_priv->map_mode == vmw_dma_map_populate && vmw_restrict_iommu) dev_priv->map_mode = vmw_dma_map_bind; - if (vmw_force_coherent) - dev_priv->map_mode = vmw_dma_alloc_coherent; - /* No TTM coherent page pool? FIXME: Ask TTM instead! */ if (!(IS_ENABLED(CONFIG_SWIOTLB) || IS_ENABLED(CONFIG_INTEL_IOMMU)) && (dev_priv->map_mode == vmw_dma_alloc_coherent)) return -EINVAL; DRM_INFO("DMA map mode: %s\n", names[dev_priv->map_mode]); - return 0; } |