--- zzzz-none-000/linux-3.10.107/drivers/usb/serial/option.c	2017-06-27 09:49:32.000000000 +0000
+++ vr9-7490-729/linux-3.10.107/drivers/usb/serial/option.c	2021-11-10 11:53:55.000000000 +0000
@@ -43,6 +43,22 @@
 #include <linux/usb/serial.h>
 #include "usb-wwan.h"
 
+
+/*== AVM/WK 20150420 Patch ported from AVM Kernel 2.6.32 ==
+**== Use params instead of default tables ==*/
+#define OPTION_USE_ID_PARAMS
+#ifdef OPTION_USE_ID_PARAMS
+static __u16 vendor  = 0;
+static __u16 product = 0;
+
+module_param(vendor, ushort, 0);
+MODULE_PARM_DESC(vendor, "User specified USB idVendor");
+
+module_param(product, ushort, 0);
+MODULE_PARM_DESC(product, "User specified USB idProduct");
+#endif
+
+
 /* Function prototypes */
 static int  option_probe(struct usb_serial *serial,
 			const struct usb_device_id *id);
@@ -519,6 +535,16 @@
 #define VIATELECOM_VENDOR_ID			0x15eb
 #define VIATELECOM_PRODUCT_CDS7			0x0001
 
+/*== AVM/WK 20150420 Patch ported from AVM Kernel 2.6.32 ==
+**== Use params instead of default tables ==*/
+#ifdef OPTION_USE_ID_PARAMS
+static struct usb_device_id option_ids[] = {
+	{ },				/* Optional parameter entry */
+	{ }					/* Terminating entry */
+};
+
+#else
+
 /* some devices interfaces need special handling due to a number of reasons */
 enum option_blacklist_reason {
 		OPTION_BLACKLIST_NONE = 0,
@@ -1844,6 +1870,8 @@
 	{ USB_DEVICE(VIATELECOM_VENDOR_ID, VIATELECOM_PRODUCT_CDS7) },
 	{ } /* Terminating entry */
 };
+#endif
+
 MODULE_DEVICE_TABLE(usb, option_ids);
 
 /* The card has three separate interfaces, which the serial driver
@@ -1888,8 +1916,38 @@
 	u8 bInterfaceNumber;
 };
 
+/*== AVM/WK 20150420 Patch ported from AVM Kernel 2.6.32 ==
+**== Use params instead of default tables ==*/
+#ifdef OPTION_USE_ID_PARAMS	
+static int __init option_init(void)
+{
+        /* == 20180201 AVM/WKR FIX: only check VID, PID==0 is allowed ==*/
+	if (vendor > 0 ) {
+		/* Add user specified VID/PID to reserved element of table. */
+		option_ids[0].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
+		option_ids[0].idVendor = vendor;
+		option_ids[0].idProduct = product;
+	}
+	return usb_serial_register_drivers(serial_drivers, KBUILD_MODNAME, option_ids);
+}
+
+static void __exit option_exit(void)
+{
+	usb_serial_deregister_drivers(serial_drivers);
+}
+
+module_init(option_init);
+module_exit(option_exit);
+
+#else
 module_usb_serial_driver(serial_drivers, option_ids);
 
+#endif
+
+/*== AVM/WK 20150420 AVM Patch == */
+#ifdef OPTION_USE_ID_PARAMS
+#define is_blacklisted(a,b,c) 0
+#else
 static bool is_blacklisted(const u8 ifnum, enum option_blacklist_reason reason,
 			   const struct option_blacklist_info *blacklist)
 {
@@ -1913,6 +1971,7 @@
 	}
 	return false;
 }
+#endif
 
 static int option_probe(struct usb_serial *serial,
 			const struct usb_device_id *id)
@@ -1935,6 +1994,36 @@
 		OPTION_BLACKLIST_RESERVED_IF,
 		(const struct option_blacklist_info *) id->driver_info))
 		return -ENODEV;
+
+/*== AVM/WK 20150420 Patch ported from AVM Kernel 2.6.32
+**== Use params instead of default tables ==*/
+#ifdef OPTION_USE_ID_PARAMS
+	{
+	
+		struct usb_host_interface *host_iface = serial->interface->cur_altsetting;
+		struct usb_endpoint_descriptor *endpoint;
+		int num_bulk_out=0;
+		int num_bulk_in=0;
+		int i;
+
+		for (i = 0; i < iface_desc->bNumEndpoints; i++) {
+			endpoint = &host_iface->endpoint[i].desc;
+			if ((endpoint->bmAttributes & 0x03) == 0x02) {
+				if (endpoint->bEndpointAddress & 0x80) {
+					++num_bulk_in;
+				} else {
+					++num_bulk_out;
+				}
+			}
+		}
+
+		/* we need both directions */
+		if (num_bulk_out == 0 || num_bulk_in == 0) {
+			return -ENODEV;
+		}
+	}
+#endif
+
 	/*
 	 * Don't bind network interface on Samsung GT-B3730, it is handled by
 	 * a separate module.