target/linux/generic/backport-4.14/030-USB-serial-option-fix-dwm-158-3g-modem-interface.patch

   1 From 4d304a6fe93538ce356b4593dc43476b50c023e7 Mon Sep 17 00:00:00 2001
   2 From: Giuseppe Lippolis <giu.lippolis@gmail.com>
   3 Date: Mon, 23 Apr 2018 09:03:06 +0200
   4 Subject: USB: serial: option: blacklist unused dwm-158 interfaces
   5
   6 The dwm-158 interface 4 and 5 doesn't answer to the AT commands
   7 and doesn't appears a option interface.
   8 Tested on openwrt distribution (kernel 4.14 using the old blacklist
   9 definitions).
  10
  11 Lars Melin also writes:
  12
  13         Blacklisting interface 4 and 5 is correct because:
  14
  15         MI_00 D-Link Mobile Broadband Device  (cdc_ether)
  16         MI_02 D-Link HSPA+DataCard Diagnostics Interface (also ppp modem)
  17         MI_03 D-Link HSPA+DataCard NMEA Device
  18         MI_04 D-Link HSPA+DataCard Speech Port
  19         MI_05 D-Link HSPA+DataCard Debug Port
  20         MI_06 USB Mass Storage Device
  21
  22 Signed-off-by: Giuseppe Lippolis <giu.lippolis@gmail.com>
  23 [ johan: add Lars's comment on the interface layout and reword summary ]
  24 Cc: Lars Melin <larsm17@gmail.com>
  25 Cc: Dan Williams <dcbw@redhat.com>
  26 Signed-off-by: Johan Hovold <johan@kernel.org>
  27 ---
  28  drivers/usb/serial/option.c | 3 ++-
  29  1 file changed, 2 insertions(+), 1 deletion(-)
  30
  31 --- a/drivers/usb/serial/option.c
  32 +++ b/drivers/usb/serial/option.c
  33 @@ -2023,7 +2023,8 @@ static const struct usb_device_id option
  34         { USB_DEVICE_INTERFACE_CLASS(0x2001, 0x7d01, 0xff) },                   /* D-Link DWM-156 (variant) */
  35         { USB_DEVICE_INTERFACE_CLASS(0x2001, 0x7d02, 0xff) },
  36         { USB_DEVICE_INTERFACE_CLASS(0x2001, 0x7d03, 0xff) },
  37 -       { USB_DEVICE_INTERFACE_CLASS(0x2001, 0x7d04, 0xff) },                   /* D-Link DWM-158 */
  38 +       { USB_DEVICE_INTERFACE_CLASS(0x2001, 0x7d04, 0xff),                     /* D-Link DWM-158 */
  39 +        .driver_info = RSVD(4) | RSVD(5) },
  40         { USB_DEVICE_INTERFACE_CLASS(0x2001, 0x7d0e, 0xff) },                   /* D-Link DWM-157 C1 */
  41         { USB_DEVICE_INTERFACE_CLASS(0x2001, 0x7e19, 0xff),                     /* D-Link DWM-221 B1 */
  42           .driver_info = RSVD(4) },