On Thu, Feb 07, 2019 at 03:26:47PM -0700, Jason Gunthorpe wrote:
> diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c b/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c
> index 31786b200afc47..e84f6aaee778f0 100644
> +++ 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@xxxxxxxx/
> + */
> + return sg_page_iter_dma_address(
> + (struct sg_dma_page_iter *)&viter->iter);
Occured to me this would be better written as:
return sg_page_iter_dma_address(
container_of(&viter->iter, struct sg_dma_page_iter, base));
Since I think we are done with this now I'll fix it when I apply this
patch
Thanks for all the acks everyone
Regards,
Jason
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