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drm/prime: replace NULL with error value in drm_prime_pages_to_sg

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Instead of NULL, error value is casted with ERR_PTR() for
drm_prime_pages_to_sg() and IS_ERR_OR_NULL() macro is replaced
with IS_ERR() macro for drm_gem_map_dma_buf().

Signed-off-by: YoungJun Cho <yj44.cho@samsung.com>
Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
YoungJun Cho 2013-06-24 16:40:53 +09:00 committed by Dave Airlie
parent b720d54a5c
commit 7e3d88f9cc
1 changed files with 5 additions and 3 deletions
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8
drivers/gpu/drm/drm_prime.c
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@ -97,7 +97,7 @@ static struct sg_table *drm_gem_map_dma_buf(struct dma_buf_attachment *attach,
sgt = obj->dev->driver->gem_prime_get_sg_table(obj);
if (!IS_ERR_OR_NULL(sgt)) {
if (!IS_ERR(sgt)) {
if (!dma_map_sg(attach->dev, sgt->sgl, sgt->nents, dir)) {
sg_free_table(sgt);
kfree(sgt);
@ -437,8 +437,10 @@ struct sg_table *drm_prime_pages_to_sg(struct page **pages, int nr_pages)
int ret;
sg = kmalloc(sizeof(struct sg_table), GFP_KERNEL);
if (!sg)
if (!sg) {
ret = -ENOMEM;
goto out;
}
ret = sg_alloc_table_from_pages(sg, pages, nr_pages, 0,
nr_pages << PAGE_SHIFT, GFP_KERNEL);
@ -448,7 +450,7 @@ struct sg_table *drm_prime_pages_to_sg(struct page **pages, int nr_pages)
return sg;
out:
kfree(sg);
return NULL;
return ERR_PTR(ret);
}
EXPORT_SYMBOL(drm_prime_pages_to_sg);