Hi, On 19.06.2020 12:36, Marek Szyprowski wrote: > Use common helper for checking the contiguity of the imported dma-buf. > > Signed-off-by: Marek Szyprowski <m.szyprow...@samsung.com> > --- > drivers/gpu/drm/exynos/exynos_drm_gem.c | 23 +++-------------------- > 1 file changed, 3 insertions(+), 20 deletions(-) > > diff --git a/drivers/gpu/drm/exynos/exynos_drm_gem.c > b/drivers/gpu/drm/exynos/exynos_drm_gem.c > index efa476858db5..1716a023bca0 100644 > --- a/drivers/gpu/drm/exynos/exynos_drm_gem.c > +++ b/drivers/gpu/drm/exynos/exynos_drm_gem.c > @@ -431,27 +431,10 @@ exynos_drm_gem_prime_import_sg_table(struct drm_device > *dev, > { > struct exynos_drm_gem *exynos_gem; > > - if (sgt->nents < 1) > + /* check if the entries in the sg_table are contiguous */ > + if (drm_prime_get_contiguous_size(sgt) < attach->dmabuf->size) { > + DRM_ERROR("buffer chunks must be mapped contiguously"); > return ERR_PTR(-EINVAL); > - > - /* > - * Check if the provided buffer has been mapped as contiguous > - * into DMA address space. > - */ > - if (sgt->nents > 1) { > - dma_addr_t next_addr = sg_dma_address(sgt->sgl); > - struct scatterlist *s; > - unsigned int i; > - > - for_each_sg(sgt->sgl, s, sgt->nents, i) { > - if (!sg_dma_len(s)) > - break; > - if (sg_dma_address(s) != next_addr) { > - DRM_ERROR("buffer chunks must be mapped > contiguously"); > - return ERR_PTR(-EINVAL); > - } > - next_addr = sg_dma_address(s) + sg_dma_len(s); > - } > }
Reviewed-by <a.ha...@samsung.com> Regards Andrzej > > exynos_gem = exynos_drm_gem_init(dev, attach->dmabuf->size); _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu