7.2-stable review patch. If anyone has any objections, please let me know. ------------------ From: Ian Lin commit 7f11480cda081de78a05d8c97073df66326b50b3 upstream. The Compal EXM-G1x is a Qualcomm SDX12-based LTE modem. Add support for its vendor-specific serial interfaces with protocols 0x30, 0x40, and 0x60. Relevant output from usb-devices: T: Bus=04 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 4 Spd=5000 MxCh= 0 D: Ver= 3.20 Cls=ef(misc ) Sub=02 Prot=01 MxPS= 9 #Cfgs= 1 P: Vendor=04b7 ProdID=8217 Rev=05.04 S: Manufacturer=COMPAL S: Product=EXM-G1x C: #Ifs= 6 Cfg#= 1 Atr=a0 MxPwr=896mA I: If#= 0 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=30 Driver=option I: If#= 1 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=42 Prot=01 Driver=(none) I: If#= 2 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=60 Driver=option I: If#= 3 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=40 Driver=option I: If#= 4 Alt= 0 #EPs= 1 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none) I: If#= 8 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=50 Driver=qmi_wwan Tested on a Compal EXM-G1x modem. Assisted-by: Codex:GPT-5 Signed-off-by: Ian Lin Cc: stable@vger.kernel.org Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/option.c | 3 +++ 1 file changed, 3 insertions(+) --- a/drivers/usb/serial/option.c +++ b/drivers/usb/serial/option.c @@ -2433,6 +2433,9 @@ static const struct usb_device_id option .driver_info = RSVD(5) }, { USB_DEVICE_INTERFACE_CLASS(0x0489, 0xe167, 0xff), /* Foxconn T99W640 MBIM */ .driver_info = RSVD(3) }, + { USB_DEVICE_AND_INTERFACE_INFO(0x04b7, 0x8217, 0xff, 0xff, 0x30) }, /* Compal EXM-G1x */ + { USB_DEVICE_AND_INTERFACE_INFO(0x04b7, 0x8217, 0xff, 0xff, 0x40) }, + { USB_DEVICE_AND_INTERFACE_INFO(0x04b7, 0x8217, 0xff, 0xff, 0x60) }, { USB_DEVICE(0x1508, 0x1001), /* Fibocom NL668 (IOT version) */ .driver_info = RSVD(4) | RSVD(5) | RSVD(6) }, { USB_DEVICE(0x1782, 0x4d10) }, /* Fibocom L610 (AT mode) */