---

yaml
---
r: 297191
b: refs/heads/master
c: d1aa06a
h: refs/heads/master
i:
  297189: ad2406c
  297187: 42af26e
  297183: 696e256
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 5375764f9408b8ef1fb8d6cd1ed0efd97dce4824
+refs/heads/master: d1aa06a1eaf5f751c9913703031d611599d8d3d7

trunk/drivers/base/dma-buf.c

@@ -185,7 +185,7 @@ struct dma_buf_attachment *dma_buf_attach(struct dma_buf *dmabuf,
 	struct dma_buf_attachment *attach;
 	int ret;
 
-	if (WARN_ON(!dmabuf || !dev || !dmabuf->ops))
+	if (WARN_ON(!dmabuf || !dev))
 		return ERR_PTR(-EINVAL);
 
 	attach = kzalloc(sizeof(struct dma_buf_attachment), GFP_KERNEL);
@@ -224,7 +224,7 @@ EXPORT_SYMBOL_GPL(dma_buf_attach);
  */
 void dma_buf_detach(struct dma_buf *dmabuf, struct dma_buf_attachment *attach)
 {
-	if (WARN_ON(!dmabuf || !attach || !dmabuf->ops))
+	if (WARN_ON(!dmabuf || !attach))
 		return;
 
 	mutex_lock(&dmabuf->lock);
@@ -255,12 +255,11 @@ struct sg_table *dma_buf_map_attachment(struct dma_buf_attachment *attach,
 
 	might_sleep();
 
-	if (WARN_ON(!attach || !attach->dmabuf || !attach->dmabuf->ops))
+	if (WARN_ON(!attach || !attach->dmabuf))
 		return ERR_PTR(-EINVAL);
 
 	mutex_lock(&attach->dmabuf->lock);
-	if (attach->dmabuf->ops->map_dma_buf)
-		sg_table = attach->dmabuf->ops->map_dma_buf(attach, direction);
+	sg_table = attach->dmabuf->ops->map_dma_buf(attach, direction);
 	mutex_unlock(&attach->dmabuf->lock);
 
 	return sg_table;
@@ -278,13 +277,11 @@ EXPORT_SYMBOL_GPL(dma_buf_map_attachment);
 void dma_buf_unmap_attachment(struct dma_buf_attachment *attach,
 				struct sg_table *sg_table)
 {
-	if (WARN_ON(!attach || !attach->dmabuf || !sg_table
-			    || !attach->dmabuf->ops))
+	if (WARN_ON(!attach || !attach->dmabuf || !sg_table))
 		return;
 
 	mutex_lock(&attach->dmabuf->lock);
-	if (attach->dmabuf->ops->unmap_dma_buf)
-		attach->dmabuf->ops->unmap_dma_buf(attach, sg_table);
+	attach->dmabuf->ops->unmap_dma_buf(attach, sg_table);
 	mutex_unlock(&attach->dmabuf->lock);
 
 }