OpenWrt – Rev 4
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From 4d304a6fe93538ce356b4593dc43476b50c023e7 Mon Sep 17 00:00:00 2001
From: Giuseppe Lippolis <giu.lippolis@gmail.com>
Date: Mon, 23 Apr 2018 09:03:06 +0200
Subject: USB: serial: option: blacklist unused dwm-158 interfaces
The dwm-158 interface 4 and 5 doesn't answer to the AT commands
and doesn't appears a option interface.
Tested on openwrt distribution (kernel 4.14 using the old blacklist
definitions).
Lars Melin also writes:
Blacklisting interface 4 and 5 is correct because:
MI_00 D-Link Mobile Broadband Device (cdc_ether)
MI_02 D-Link HSPA+DataCard Diagnostics Interface (also ppp modem)
MI_03 D-Link HSPA+DataCard NMEA Device
MI_04 D-Link HSPA+DataCard Speech Port
MI_05 D-Link HSPA+DataCard Debug Port
MI_06 USB Mass Storage Device
Signed-off-by: Giuseppe Lippolis <giu.lippolis@gmail.com>
[ johan: add Lars's comment on the interface layout and reword summary ]
Cc: Lars Melin <larsm17@gmail.com>
Cc: Dan Williams <dcbw@redhat.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
---
drivers/usb/serial/option.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/usb/serial/option.c
+++ b/drivers/usb/serial/option.c
@@ -1919,7 +1919,8 @@ static const struct usb_device_id option
{ USB_DEVICE_INTERFACE_CLASS(0x2001, 0x7d01, 0xff) }, /* D-Link DWM-156 (variant) */
{ USB_DEVICE_INTERFACE_CLASS(0x2001, 0x7d02, 0xff) },
{ USB_DEVICE_INTERFACE_CLASS(0x2001, 0x7d03, 0xff) },
- { USB_DEVICE_INTERFACE_CLASS(0x2001, 0x7d04, 0xff) }, /* D-Link DWM-158 */
+ { USB_DEVICE_INTERFACE_CLASS(0x2001, 0x7d04, 0xff), /* D-Link DWM-158 */
+ .driver_info = RSVD(4) | RSVD(5) },
{ USB_DEVICE_INTERFACE_CLASS(0x2001, 0x7d0e, 0xff) }, /* D-Link DWM-157 C1 */
{ USB_DEVICE_INTERFACE_CLASS(0x2001, 0x7e19, 0xff), /* D-Link DWM-221 B1 */
.driver_info = RSVD(4) },