Commit 6a8f15c6 authored by Marek Szyprowski's avatar Marek Szyprowski

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

Use common helper for checking the contiguity of the imported dma-buf.
Signed-off-by: default avatarMarek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: default avatarRobin Murphy <robin.murphy@arm.com>
parent 34a4e66f
......@@ -460,23 +460,6 @@ struct sg_table *rockchip_gem_prime_get_sg_table(struct drm_gem_object *obj)
return sgt;
}
static unsigned long rockchip_sg_get_contiguous_size(struct sg_table *sgt,
int count)
{
struct scatterlist *s;
dma_addr_t expected = sg_dma_address(sgt->sgl);
unsigned int i;
unsigned long size = 0;
for_each_sg(sgt->sgl, s, count, i) {
if (sg_dma_address(s) != expected)
break;
expected = sg_dma_address(s) + sg_dma_len(s);
size += sg_dma_len(s);
}
return size;
}
static int
rockchip_gem_iommu_map_sg(struct drm_device *drm,
struct dma_buf_attachment *attach,
......@@ -498,7 +481,7 @@ rockchip_gem_dma_map_sg(struct drm_device *drm,
if (!count)
return -EINVAL;
if (rockchip_sg_get_contiguous_size(sg, count) < attach->dmabuf->size) {
if (drm_prime_get_contiguous_size(sg) < attach->dmabuf->size) {
DRM_ERROR("failed to map sg_table to contiguous linear address.\n");
dma_unmap_sg(drm->dev, sg->sgl, sg->nents,
DMA_BIDIRECTIONAL);
......
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