The drm_prime_pages_to_sg() function never returns NULL pointers, only
error pointers and valid pointers.
Signed-off-by: Haixia Shi <hshi@xxxxxxxxxxxx>
Reviewed-by: Stéphane Marchesin <marcheu@xxxxxxxxxxxx>
---
drivers/gpu/drm/udl/udl_dmabuf.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/udl/udl_dmabuf.c b/drivers/gpu/drm/udl/udl_dmabuf.c
index 2425b76..ac8a66b 100644
--- a/drivers/gpu/drm/udl/udl_dmabuf.c
+++ b/drivers/gpu/drm/udl/udl_dmabuf.c
@@ -99,9 +99,9 @@ static struct sg_table *udl_map_dma_buf(struct dma_buf_attachment *attach,
page_count = obj->base.size / PAGE_SIZE;
obj->sg = drm_prime_pages_to_sg(obj->pages, page_count);
- if (!obj->sg) {
- DRM_ERROR("sg is null.\n");
- return ERR_PTR(-ENOMEM);
+ if (IS_ERR(obj->sg)) {
+ DRM_ERROR("failed to allocate sgt.\n");
+ return ERR_CAST(obj->sg);
}
sgt = &udl_attach->sgt;
--
2.2.0.rc0.207.ga3a616c
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