[PATCH 1/4] drm/exynos: explicit store base gem object in dma_buf->priv

[Inki Dae]

Signed-off-by: Inki Dae <inki.dae at samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park at samsung.com>
---
 drivers/gpu/drm/exynos/exynos_drm_dmabuf.c |   12 ++++++++----
 1 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/exynos/exynos_drm_dmabuf.c 
b/drivers/gpu/drm/exynos/exynos_drm_dmabuf.c
index 3cd56e1..fd76449 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_dmabuf.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_dmabuf.c
@@ -22,6 +22,11 @@ struct exynos_drm_dmabuf_attachment {
        bool is_mapped;
 };

+static struct exynos_drm_gem_obj *dma_buf_to_obj(struct dma_buf *buf)
+{
+       return to_exynos_gem_obj(buf->priv);
+}
+
 static int exynos_gem_attach_dma_buf(struct dma_buf *dmabuf,
                                        struct device *dev,
                                        struct dma_buf_attachment *attach)
@@ -63,7 +68,7 @@ static struct sg_table *
                                        enum dma_data_direction dir)
 {
        struct exynos_drm_dmabuf_attachment *exynos_attach = attach->priv;
-       struct exynos_drm_gem_obj *gem_obj = attach->dmabuf->priv;
+       struct exynos_drm_gem_obj *gem_obj = dma_buf_to_obj(attach->dmabuf);
        struct drm_device *dev = gem_obj->base.dev;
        struct exynos_drm_gem_buf *buf;
        struct scatterlist *rd, *wr;
@@ -180,7 +185,7 @@ struct dma_buf *exynos_dmabuf_prime_export(struct 
drm_device *drm_dev,
 {
        struct exynos_drm_gem_obj *exynos_gem_obj = to_exynos_gem_obj(obj);

-       return dma_buf_export(exynos_gem_obj, &exynos_dmabuf_ops,
+       return dma_buf_export(obj, &exynos_dmabuf_ops,
                                exynos_gem_obj->base.size, flags);
 }

@@ -198,8 +203,7 @@ struct drm_gem_object *exynos_dmabuf_prime_import(struct 
drm_device *drm_dev,
        if (dma_buf->ops == &exynos_dmabuf_ops) {
                struct drm_gem_object *obj;

-               exynos_gem_obj = dma_buf->priv;
-               obj = &exynos_gem_obj->base;
+               obj = dma_buf->priv;

                /* is it from our device? */
                if (obj->dev == drm_dev) {
-- 
1.7.5.4