--- zzzz-none-000/linux-3.10.107/drivers/dma/virt-dma.h	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/drivers/dma/virt-dma.h	2021-02-04 17:41:59.000000000 +0000
@@ -47,9 +47,9 @@
 
 /**
  * vchan_tx_prep - prepare a descriptor
- * vc: virtual channel allocating this descriptor
- * vd: virtual descriptor to prepare
- * tx_flags: flags argument passed in to prepare function
+ * @vc: virtual channel allocating this descriptor
+ * @vd: virtual descriptor to prepare
+ * @tx_flags: flags argument passed in to prepare function
  */
 static inline struct dma_async_tx_descriptor *vchan_tx_prep(struct virt_dma_chan *vc,
 	struct virt_dma_desc *vd, unsigned long tx_flags)
@@ -65,7 +65,7 @@
 
 /**
  * vchan_issue_pending - move submitted descriptors to issued list
- * vc: virtual channel to update
+ * @vc: virtual channel to update
  *
  * vc.lock must be held by caller
  */
@@ -77,17 +77,19 @@
 
 /**
  * vchan_cookie_complete - report completion of a descriptor
- * vd: virtual descriptor to update
+ * @vd: virtual descriptor to update
  *
  * vc.lock must be held by caller
  */
 static inline void vchan_cookie_complete(struct virt_dma_desc *vd)
 {
 	struct virt_dma_chan *vc = to_virt_chan(vd->tx.chan);
+	dma_cookie_t cookie;
 
+	cookie = vd->tx.cookie;
 	dma_cookie_complete(&vd->tx);
 	dev_vdbg(vc->chan.device->dev, "txd %p[%x]: marked complete\n",
-		vd, vd->tx.cookie);
+		 vd, cookie);
 	list_add_tail(&vd->node, &vc->desc_completed);
 
 	tasklet_schedule(&vc->task);
@@ -95,7 +97,7 @@
 
 /**
  * vchan_cyclic_callback - report the completion of a period
- * vd: virtual descriptor
+ * @vd: virtual descriptor
  */
 static inline void vchan_cyclic_callback(struct virt_dma_desc *vd)
 {
@@ -107,7 +109,7 @@
 
 /**
  * vchan_next_desc - peek at the next descriptor to be processed
- * vc: virtual channel to obtain descriptor from
+ * @vc: virtual channel to obtain descriptor from
  *
  * vc.lock must be held by caller
  */
@@ -121,8 +123,8 @@
 
 /**
  * vchan_get_all_descriptors - obtain all submitted and issued descriptors
- * vc: virtual channel to get descriptors from
- * head: list of descriptors found
+ * @vc: virtual channel to get descriptors from
+ * @head: list of descriptors found
  *
  * vc.lock must be held by caller
  *