Re: [PATCH] USB: option: add "D-Link DWM-221 B1" device id

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Johan Hovold <johan@xxxxxxxxxx> writes:

> On Mon, Mar 28, 2016 at 10:37:35PM +0200, Bjørn Mork wrote:
>> Thomas reports:
>> "Windows:
>> 
>> 00 diagnostics
>> 01 modem
>> 02 at-port
>> 03 nmea
>> 04 nic
>> 
>> Linux:
>> 
>> T:  Bus=02 Lev=01 Prnt=01 Port=03 Cnt=01 Dev#=  4 Spd=480 MxCh= 0
>> D:  Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs=  1
>> P:  Vendor=2001 ProdID=7e19 Rev=02.32
>> S:  Manufacturer=Mobile Connect
>> S:  Product=Mobile Connect
>> S:  SerialNumber=0123456789ABCDEF
>> C:  #Ifs= 6 Cfg#= 1 Atr=a0 MxPwr=500mA
>> I:  If#= 0 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option
>> I:  If#= 1 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
>> I:  If#= 2 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
>> I:  If#= 3 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
>> I:  If#= 4 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=qmi_wwan
>> I:  If#= 5 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=06 Prot=50 Driver=usb-storage"
>> 
>> Reported-by: Thomas Schäfer <tschaefer@xxxxxxxxxxx>
>> Cc: <stable@xxxxxxxxxxxxxxx>
>> Signed-off-by: Bjørn Mork <bjorn@xxxxxxx>
>> ---
>>  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 348e19834b83..6ca2cc5790c0 100644
>> --- a/drivers/usb/serial/option.c
>> +++ b/drivers/usb/serial/option.c
>> @@ -1818,6 +1818,8 @@ static const struct usb_device_id option_ids[] = {
>>  	{ USB_DEVICE_AND_INTERFACE_INFO(0x2001, 0x7d02, 0xff, 0x00, 0x00) },
>>  	{ USB_DEVICE_AND_INTERFACE_INFO(0x2001, 0x7d03, 0xff, 0x02, 0x01) },
>>  	{ USB_DEVICE_AND_INTERFACE_INFO(0x2001, 0x7d03, 0xff, 0x00, 0x00) },
>> +	{ USB_DEVICE(0x2001, 0x7e19),						/* D-Link DWM-221 B1 */
>> +	  .driver_info = (kernel_ulong_t)&net_intf4_blacklist },
>
> Why not use USB_DEVICE_INTERFACE_CLASS here to avoid even trying to
> probe the mass-storage interface?

Makes sense.  Just didn't think about it.  Saw the nearby entries and
concluded that it was better with a single USB_DEVICE than multiple
USB_DEVICE_AND_INTERFACE_INFO entries.  Forgot all about
USB_DEVICE_INTERFACE_CLASS.

I'll send a v2 ASAP


Bjørn
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