--- zzzz-none-000/linux-5.15.111/drivers/net/usb/rndis_host.c	2023-05-11 14:00:40.000000000 +0000
+++ puma7-atom-6670-761/linux-5.15.111/drivers/net/usb/rndis_host.c	2024-02-07 10:23:12.000000000 +0000
@@ -371,6 +371,21 @@
 		net->mtu = dev->hard_mtu - net->hard_header_len;
 	}
 
+/* == 20160222 AVM/VGJ - CHANGESET: FIX for buggy ZTE Modems: Adjust Rx Buffer Size == */
+#if 1
+	if (tmp > dev->rx_urb_size) {
+		dev->rx_urb_size = 4096;
+		while (tmp > dev->rx_urb_size) {
+			dev->rx_urb_size += 4096;
+			if (dev->rx_urb_size >= (4*4096)) {
+				break;
+			}
+		}
+		dev_warn(&intf->dev, 
+			"dev needs rx_urb_size %d, adjusting to %d\n", tmp, dev->rx_urb_size);
+	}
+#endif
+
 	/* REVISIT:  peripheral "alignment" request is ignored ... */
 	dev_dbg(&intf->dev,
 		"hard mtu %u (%u from dev), rx buflen %zu, align %d\n",