net: usb: ax88179_178a: FIXUP!

Signed-off-by: Santhosh <santhosh.user.why.red@gmail.com>

drivers/net/usb/ax88179_178a.c

@@ -1064,62 +1064,14 @@ static void ax88179_rx_fixup
 	pkt_cnt = rx_hdr & 0xFF;
 	pkt_hdr_curr = hdr_off = rx_hdr >> 16;
 
-	/* Make sure that the bounds of the metadata array are inside the SKB
-	 * (and in front of the counter at the end).
-	 */
-	if (pkt_cnt * 4 + hdr_off > skb->len)
-		return 0;
-	pkt_hdr = (u32 *)(skb->data + hdr_off);
-
-	/* Packets must not overlap the metadata array */
-	skb_trim(skb, hdr_off);
-
-	for (; pkt_cnt > 0; pkt_cnt--, pkt_hdr++) {
-		u16 pkt_len_plus_padd;
-		u16 pkt_len;
-
-		le32_to_cpus(pkt_hdr);
-		pkt_len = (*pkt_hdr >> 16) & 0x1fff;
-		pkt_len_plus_padd = (pkt_len + 7) & 0xfff8;
-
-		/* Skip dummy header used for alignment
-		 */
-		if (pkt_len == 0)
-			continue;
-
-		if (pkt_len_plus_padd > skb->len)
-			return 0;
-
-		/* Check CRC or runt packet */
-		if ((*pkt_hdr & (AX_RXHDR_CRC_ERR | AX_RXHDR_DROP_ERR)) ||
-		    pkt_len < 2 + ETH_HLEN) {
-			dev->net->stats.rx_errors++;
-			skb_pull(skb, pkt_len_plus_padd);
-			continue;
-		}
-
-		/* last packet */
-		if (pkt_len_plus_padd == skb->len) {
-			skb_trim(skb, pkt_len);
-
-			/* Skip IP alignment pseudo header */
-			skb_pull(skb, 2);
-
-			ax88179_rx_checksum(skb, pkt_hdr);
-			return 1;
-		}
-
-		ax_skb = netdev_alloc_skb_ip_align(dev->net, pkt_len);
-		if (!ax_skb)
-			return 0;
-		skb_put(ax_skb, pkt_len);
-		memcpy(ax_skb->data, skb->data + 2, pkt_len);
-
-		ax88179_rx_checksum(ax_skb, pkt_hdr);
-		usbnet_skb_return(dev, ax_skb);
-
-		skb_pull(skb, pkt_len_plus_padd);
-	}
+	        aa = (actual_length - (((pkt_cnt + 2) & 0xFE) * 4));
+        if ((aa != hdr_off) ||
+            (hdr_off >= desc->urb->actual_length) ||
+            (pkt_cnt == 0)) {
+                desc->urb->actual_length = 0;
+                stats->rx_length_errors++;
+                return;
+        }
 
 	rx_data = desc->head;
 	while (pkt_cnt--) {