Merge branch 'exynos-drm-next' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos into drm-next

This is final pull request for 3.11. This resolves some memory leak
   issues, and includes some code and dt document file cleanups; just
   removed unnecessary descriptions.

   And the patch work for enhancing hdmiphy driver isn't in progress so
   this patch may go to 3.12.

* 'exynos-drm-next' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos:
  drm/exynos: remove duplicated error routine and unnecessary assign
  drm/exynos: fix pages allocation size in lowlevel_buffer_allocate
  drm/exynos: use drm_calloc_large when allocates pointer array
  drm/exynos: add error check routine in exynos_drm_open
  drm/exynos: initialize the buf_num in vp_video_buffer
  drm/exynos: remove dead code in vidi_power_on
  drm/exynos: fix not to remain exynos_gem_obj as a leak
  of/documentation: Update hpd gpio property for exynos_hdmi

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;
@@ -69,8 +68,8 @@ static int lowlevel_buffer_allocate(struct drm_device *dev,
 					&buf->dma_attrs);
 		if (!buf->kvaddr) {
 			DRM_ERROR("failed to allocate buffer.\n");
-			kfree(buf->pages);
-			return -ENOMEM;
+			ret = -ENOMEM;
+			goto err_free;
 		}
 
 		start_addr = buf->dma_addr;
@@ -107,9 +106,9 @@ 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))
-		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_drv.c

@@ -155,6 +155,7 @@ static int exynos_drm_unload(struct drm_device *dev)
 static int exynos_drm_open(struct drm_device *dev, struct drm_file *file)
 {
 	struct drm_exynos_file_private *file_priv;
+	int ret;
 
 	file_priv = kzalloc(sizeof(*file_priv), GFP_KERNEL);
 	if (!file_priv)
@@ -162,7 +163,13 @@ static int exynos_drm_open(struct drm_device *dev, struct drm_file *file)
 
 	file->driver_priv = file_priv;
 
-	return exynos_drm_subdrv_open(dev, file);
+	ret = exynos_drm_subdrv_open(dev, file);
+	if (ret) {
+		kfree(file_priv);
+		file->driver_priv = NULL;
+	}
+
+	return ret;
 }
 
 static void exynos_drm_preclose(struct drm_device *dev,

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;
 
-	kfree(g2d_userptr->pages);
-	g2d_userptr->pages = NULL;
+	drm_free_large(g2d_userptr->pages);
 	kfree(g2d_userptr);
-	g2d_userptr = NULL;
 }
 
 static dma_addr_t *g2d_userptr_get_dma_addr(struct drm_device *drm_dev,
@@ -463,11 +460,11 @@ 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);
-		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,
@@ -554,10 +550,10 @@ err_put_vma:
 	exynos_gem_put_vma(g2d_userptr->vma);
 
 err_free_pages:
-	kfree(pages);
+	drm_free_large(pages);
+
+err_free:
 	kfree(g2d_userptr);
-	pages = NULL;
-	g2d_userptr = NULL;
 
 	return ERR_PTR(ret);
 }

drivers/gpu/drm/exynos/exynos_drm_gem.c

@@ -246,13 +246,14 @@ struct exynos_drm_gem_obj *exynos_drm_gem_create(struct drm_device *dev,
 	exynos_gem_obj->flags = flags;
 
 	ret = exynos_drm_alloc_buf(dev, buf, flags);
-	if (ret < 0) {
-		drm_gem_object_release(&exynos_gem_obj->base);
-		goto err_fini_buf;
-	}
+	if (ret < 0)
+		goto err_gem_fini;
 
 	return exynos_gem_obj;
 
+err_gem_fini:
+	drm_gem_object_release(&exynos_gem_obj->base);
+	kfree(exynos_gem_obj);
 err_fini_buf:
 	exynos_drm_fini_buf(dev, buf);
 	return ERR_PTR(ret);

drivers/gpu/drm/exynos/exynos_drm_vidi.c

@@ -413,9 +413,6 @@ static int vidi_power_on(struct vidi_context *ctx, bool enable)
 	struct exynos_drm_subdrv *subdrv = &ctx->subdrv;
 	struct device *dev = subdrv->dev;
 
-	if (enable != false && enable != true)
-		return -EINVAL;
-
 	if (enable) {
 		ctx->suspended = false;
 

drivers/gpu/drm/exynos/exynos_mixer.c

@@ -379,7 +379,7 @@ static void vp_video_buffer(struct mixer_context *ctx, int win)
 	unsigned long flags;
 	struct hdmi_win_data *win_data;
 	unsigned int x_ratio, y_ratio;
-	unsigned int buf_num;
+	unsigned int buf_num = 1;
 	dma_addr_t luma_addr[2], chroma_addr[2];
 	bool tiled_mode = false;
 	bool crcb_mode = false;