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path: root/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c
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Diffstat (limited to 'drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c')
-rw-r--r--drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c b/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c
index 31786b200afc..a3357ff7540d 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c
@@ -311,7 +311,13 @@ static dma_addr_t __vmw_piter_dma_addr(struct vmw_piter *viter)
static dma_addr_t __vmw_piter_sg_addr(struct vmw_piter *viter)
{
- return sg_page_iter_dma_address(&viter->iter);
+ /*
+ * FIXME: This driver wrongly mixes DMA and CPU SG list iteration and
+ * needs revision. See
+ * https://lore.kernel.org/lkml/20190104223531.GA1705@ziepe.ca/
+ */
+ return sg_page_iter_dma_address(
+ container_of(&viter->iter, struct sg_dma_page_iter, base));
}