diff options
Diffstat (limited to 'drivers/gpu/drm/drm_prime.c')
| -rw-r--r-- | drivers/gpu/drm/drm_prime.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/drivers/gpu/drm/drm_prime.c b/drivers/gpu/drm/drm_prime.c index b8c7f068a5a4..11fe9ff76fd5 100644 --- a/drivers/gpu/drm/drm_prime.c +++ b/drivers/gpu/drm/drm_prime.c @@ -803,9 +803,11 @@ static const struct dma_buf_ops drm_gem_prime_dmabuf_ops = { * * This is useful for implementing &drm_gem_object_funcs.get_sg_table. */ -struct sg_table *drm_prime_pages_to_sg(struct page **pages, unsigned int nr_pages) +struct sg_table *drm_prime_pages_to_sg(struct drm_device *dev, + struct page **pages, unsigned int nr_pages) { struct sg_table *sg = NULL; + size_t max_segment = 0; int ret; sg = kmalloc(sizeof(struct sg_table), GFP_KERNEL); @@ -814,8 +816,13 @@ struct sg_table *drm_prime_pages_to_sg(struct page **pages, unsigned int nr_page goto out; } - ret = sg_alloc_table_from_pages(sg, pages, nr_pages, 0, - nr_pages << PAGE_SHIFT, GFP_KERNEL); + if (dev) + max_segment = dma_max_mapping_size(dev->dev); + if (max_segment == 0 || max_segment > SCATTERLIST_MAX_SEGMENT) + max_segment = SCATTERLIST_MAX_SEGMENT; + ret = __sg_alloc_table_from_pages(sg, pages, nr_pages, 0, + nr_pages << PAGE_SHIFT, + max_segment, GFP_KERNEL); if (ret) goto out; |