On Fri, Sep 17, 2021 at 07:01:06PM +0800, Slark Xiao wrote: > Adding support for Foxconn device T99W265 for enumeration with > PID 0xe0db. > > usb-devices output for 0xe0db > T: Bus=04 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 19 Spd=5000 MxCh= 0 > D: Ver= 3.20 Cls=ef(misc ) Sub=02 Prot=01 MxPS= 9 #Cfgs= 1 > P: Vendor=0489 ProdID=e0db Rev=05.04 > S: Manufacturer=Microsoft > S: Product=Generic Mobile Broadband Adapter > S: SerialNumber=6c50f452 > C: #Ifs= 5 Cfg#= 1 Atr=a0 MxPwr=896mA > I: If#=0x0 Alt= 0 #EPs= 1 Cls=02(commc) Sub=0e Prot=00 Driver=cdc_mbim > I: If#=0x1 Alt= 1 #EPs= 2 Cls=0a(data ) Sub=00 Prot=02 Driver=cdc_mbim > I: If#=0x2 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=40 Driver=option > I: If#=0x3 Alt= 0 #EPs= 1 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none) > I: If#=0x4 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=30 Driver=option > > if0/1: MBIM, if2:Diag, if3:GNSS, if4: Modem > > Signed-off-by: Slark Xiao <slark_xiao@xxxxxxx> Thanks for the patch and for including all the necessary details in the commit message. First, a minor style nit: Please add spaces after the ':'s in the patch Subject. > --- > drivers/usb/serial/option.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c > index 29c765cc8495..fde599fa2d73 100644 > --- a/drivers/usb/serial/option.c > +++ b/drivers/usb/serial/option.c > @@ -2068,6 +2068,8 @@ static const struct usb_device_id option_ids[] = { > .driver_info = RSVD(0) | RSVD(1) | RSVD(6) }, > { USB_DEVICE(0x0489, 0xe0b5), /* Foxconn T77W968 ESIM */ > .driver_info = RSVD(0) | RSVD(1) | RSVD(6) }, > + { USB_DEVICE(0x0489, 0xe0db), /* Foxconn T99W265 MBIM extension*/ > + .driver_info = RSVD(0) | RSVD(1) | RSVD(3) }, If you use USB_DEVICE_INTERFACE_CLASS() instead you don't need to explicitly reserve the MBIM interfaces. Also, why are you reserving the GNSS interface (e.g. unlike T77W968)? > { USB_DEVICE(0x1508, 0x1001), /* Fibocom NL668 (IOT version) */ > .driver_info = RSVD(4) | RSVD(5) | RSVD(6) }, > { USB_DEVICE(0x2cb7, 0x0104), /* Fibocom NL678 series */ Johan