From: Wei Yongjun yongjun_wei@trendmicro.com.cn
In case of error, the function drm_prime_pages_to_sg() returns ERR_PTR() and never returns NULL. The NULL test in the return value check should be replaced with IS_ERR().
Signed-off-by: Wei Yongjun yongjun_wei@trendmicro.com.cn --- drivers/gpu/drm/exynos/exynos_drm_buf.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/exynos/exynos_drm_buf.c b/drivers/gpu/drm/exynos/exynos_drm_buf.c index 3445a0f..e3ee833 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_buf.c +++ b/drivers/gpu/drm/exynos/exynos_drm_buf.c @@ -90,9 +90,9 @@ static int lowlevel_buffer_allocate(struct drm_device *dev, }
buf->sgt = drm_prime_pages_to_sg(buf->pages, nr_pages); - if (!buf->sgt) { + if (IS_ERR(buf->sgt)) { DRM_ERROR("failed to get sg table.\n"); - ret = -ENOMEM; + ret = PTR_ERR(buf->sgt); goto err_free_attrs; }