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drm: exynos: use common helper for a scatterlist contiguity check

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Use common helper for checking the contiguity of the imported dma-buf.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
Acked-by : Inki Dae <inki.dae@samsung.com>
This commit is contained in:
Marek Szyprowski
2020-04-30 14:02:25 +02:00
parent 182354a526
commit 10740255d8
1 changed files with 3 additions and 20 deletions
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23
drivers/gpu/drm/exynos/exynos_drm_gem.c
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@@ -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);
}
}
exynos_gem = exynos_drm_gem_init(dev, attach->dmabuf->size);