--- zzzz-none-000/linux-3.10.107/net/caif/cfpkt_skbuff.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/net/caif/cfpkt_skbuff.c	2021-02-04 17:41:59.000000000 +0000
@@ -203,20 +203,10 @@
 			PKT_ERROR(pkt, "cow failed\n");
 			return -EPROTO;
 		}
-		/*
-		 * Is the SKB non-linear after skb_cow_data()? If so, we are
-		 * going to add data to the last SKB, so we need to adjust
-		 * lengths of the top SKB.
-		 */
-		if (lastskb != skb) {
-			pr_warn("Packet is non-linear\n");
-			skb->len += len;
-			skb->data_len += len;
-		}
 	}
 
 	/* All set to put the last SKB and optionally write data there. */
-	to = skb_put(lastskb, len);
+	to = pskb_put(skb, lastskb, len);
 	if (likely(data))
 		memcpy(to, data, len);
 	return 0;
@@ -265,9 +255,9 @@
 	return skb->len;
 }
 
-inline u16 cfpkt_iterate(struct cfpkt *pkt,
-			 u16 (*iter_func)(u16, void *, u16),
-			 u16 data)
+int cfpkt_iterate(struct cfpkt *pkt,
+		  u16 (*iter_func)(u16, void *, u16),
+		  u16 data)
 {
 	/*
 	 * Don't care about the performance hit of linearizing,
@@ -296,7 +286,7 @@
 		else
 			skb_trim(skb, len);
 
-			return cfpkt_getlen(pkt);
+		return cfpkt_getlen(pkt);
 	}
 
 	/* Need to expand SKB */