drm/exynos: use drm_calloc_large when allocates pointer array

If the type of object is pointer array, the drm_calloc_large() is
more suitable than kzalloc() for its allocation function. And uses
drm_free_large() instead of kfree() also.
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: Inki Dae <inki.dae@samsung.com>

drivers/gpu/drm/exynos/exynos_drm_buf.c

@@ -57,8 +57,7 @@ static int lowlevel_buffer_allocate(struct drm_device *dev,
 		dma_addr_t start_addr;
 		unsigned int i = 0;
 
-		buf->pages = kzalloc(sizeof(struct page) * nr_pages,
-					GFP_KERNEL);
+		buf->pages = drm_calloc_large(nr_pages, sizeof(struct page));
 		if (!buf->pages) {
 			DRM_ERROR("failed to allocate pages.\n");
 			return -ENOMEM;
@@ -69,7 +68,7 @@ static int lowlevel_buffer_allocate(struct drm_device *dev,
 					&buf->dma_attrs);
 		if (!buf->kvaddr) {
 			DRM_ERROR("failed to allocate buffer.\n");
-			kfree(buf->pages);
+			drm_free_large(buf->pages);
 			return -ENOMEM;
 		}
 
@@ -109,7 +108,7 @@ static int lowlevel_buffer_allocate(struct drm_device *dev,
 	buf->dma_addr = (dma_addr_t)NULL;
 
 	if (!is_drm_iommu_supported(dev))
-		kfree(buf->pages);
+		drm_free_large(buf->pages);
 
 	return ret;
 }
@@ -134,7 +133,7 @@ static void lowlevel_buffer_deallocate(struct drm_device *dev,
 	if (!is_drm_iommu_supported(dev)) {
 		dma_free_attrs(dev->dev, buf->size, buf->kvaddr,
 				(dma_addr_t)buf->dma_addr, &buf->dma_attrs);
-		kfree(buf->pages);
+		drm_free_large(buf->pages);
 	} else
 		dma_free_attrs(dev->dev, buf->size, buf->pages,
 				(dma_addr_t)buf->dma_addr, &buf->dma_attrs);

drivers/gpu/drm/exynos/exynos_drm_g2d.c

@@ -390,7 +390,7 @@ static void g2d_userptr_put_dma_addr(struct drm_device *drm_dev,
 	kfree(g2d_userptr->sgt);
 	g2d_userptr->sgt = NULL;
 
-	kfree(g2d_userptr->pages);
+	drm_free_large(g2d_userptr->pages);
 	g2d_userptr->pages = NULL;
 	kfree(g2d_userptr);
 	g2d_userptr = NULL;
@@ -463,7 +463,7 @@ static dma_addr_t *g2d_userptr_get_dma_addr(struct drm_device *drm_dev,
 	npages = (end - start) >> PAGE_SHIFT;
 	g2d_userptr->npages = npages;
 
-	pages = kzalloc(npages * sizeof(struct page *), GFP_KERNEL);
+	pages = drm_calloc_large(npages, sizeof(struct page *));
 	if (!pages) {
 		DRM_ERROR("failed to allocate pages.\n");
 		kfree(g2d_userptr);
@@ -554,7 +554,7 @@ static dma_addr_t *g2d_userptr_get_dma_addr(struct drm_device *drm_dev,
 	exynos_gem_put_vma(g2d_userptr->vma);
 
 err_free_pages:
-	kfree(pages);
+	drm_free_large(pages);
 	kfree(g2d_userptr);
 	pages = NULL;
 	g2d_userptr = NULL;