[PATCH 3/3] drm/exynos: remove duplicated error routine and unnecessary assign

[Seung-Woo Kim]

There were duplicated error handling routines during allocating
pages in lowlevel_buffer_allocate() and g2d_userptr_get_dma_addr().
Also unnecessary NULL assignments for variable used not any more
are removed from g2d_userptr_get_dma_addr() and
g2d_userptr_put_dma_addr().

Signed-off-by: Seung-Woo Kim <sw0312.kim at samsung.com>
Signed-off-by: YoungJun Cho <yj44.cho at samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park at samsung.com>
---
 drivers/gpu/drm/exynos/exynos_drm_buf.c |    6 +++---
 drivers/gpu/drm/exynos/exynos_drm_g2d.c |   12 ++++--------
 2 files changed, 7 insertions(+), 11 deletions(-)

diff --git a/drivers/gpu/drm/exynos/exynos_drm_buf.c 
b/drivers/gpu/drm/exynos/exynos_drm_buf.c
index 518b6d8..b8ac06d 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_buf.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_buf.c
@@ -68,8 +68,8 @@ static int lowlevel_buffer_allocate(struct drm_device *dev,
                                        &buf->dma_attrs);
                if (!buf->kvaddr) {
                        DRM_ERROR("failed to allocate buffer.\n");
-                       drm_free_large(buf->pages);
-                       return -ENOMEM;
+                       ret = -ENOMEM;
+                       goto err_free;
                }

                start_addr = buf->dma_addr;
@@ -106,7 +106,7 @@ err_free_attrs:
        dma_free_attrs(dev->dev, buf->size, buf->pages,
                        (dma_addr_t)buf->dma_addr, &buf->dma_attrs);
        buf->dma_addr = (dma_addr_t)NULL;
-
+err_free:
        if (!is_drm_iommu_supported(dev))
                drm_free_large(buf->pages);

diff --git a/drivers/gpu/drm/exynos/exynos_drm_g2d.c 
b/drivers/gpu/drm/exynos/exynos_drm_g2d.c
index fb19ee5..42a5a54 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_g2d.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_g2d.c
@@ -388,12 +388,9 @@ out:

        sg_free_table(g2d_userptr->sgt);
        kfree(g2d_userptr->sgt);
-       g2d_userptr->sgt = NULL;

        drm_free_large(g2d_userptr->pages);
-       g2d_userptr->pages = NULL;
        kfree(g2d_userptr);
-       g2d_userptr = NULL;
 }

 static dma_addr_t *g2d_userptr_get_dma_addr(struct drm_device *drm_dev,
@@ -466,8 +463,8 @@ static dma_addr_t *g2d_userptr_get_dma_addr(struct 
drm_device *drm_dev,
        pages = drm_calloc_large(npages, sizeof(struct page *));
        if (!pages) {
                DRM_ERROR("failed to allocate pages.\n");
-               kfree(g2d_userptr);
-               return ERR_PTR(-ENOMEM);
+               ret = -ENOMEM;
+               goto err_free;
        }

        vma = find_vma(current->mm, userptr);
@@ -543,7 +540,6 @@ err_sg_free_table:

 err_free_sgt:
        kfree(sgt);
-       sgt = NULL;

 err_free_userptr:
        exynos_gem_put_pages_to_userptr(g2d_userptr->pages,
@@ -555,9 +551,9 @@ err_put_vma:

 err_free_pages:
        drm_free_large(pages);
+
+err_free:
        kfree(g2d_userptr);
-       pages = NULL;
-       g2d_userptr = NULL;

        return ERR_PTR(ret);
 }
-- 
1.7.4.1