Hello,

How does the same product have different product id?

> [51536.224219] usb 2-1.4: New USB device found, idVendor=2357, idProduct=f006
> [51541.301304] usb 2-1.4: New USB device found, idVendor=2357, idProduct=0200

Is it the fact that one time it is detected as USB device and second
time as a emulated USB serial device?

--
Regards,
Anil Nair

On 1/8/13, Greg KH <gre...@linuxfoundation.org> wrote:
> On Tue, Jan 08, 2013 at 11:07:22PM +0800, hockseng leow wrote:
>> Hello,
>>
>> Please add the modem to a proper driver.
>>
>> Attached is the dmesg.
>
> What type of device is this?  And where did you get the instructions
> that told you to add it to the generic USB Serial driver?
>
>> [51536.010224] usb 2-1.4: new full-speed USB device number 10 using
>> uhci_hcd
>> [51536.224219] usb 2-1.4: New USB device found, idVendor=2357,
>> idProduct=f006
>> [51536.224233] usb 2-1.4: New USB device strings: Mfr=3, Product=2,
>> SerialNumber=0
>> [51536.224243] usb 2-1.4: Product: TP-LINK HSUPA Modem
>> [51536.224252] usb 2-1.4: Manufacturer: TP-LINK, Incorporated
>> [51536.282204] hid-generic 0003:2357:F006.0006: hiddev0,hidraw2: USB HID
>> v1.10 Device [TP-LINK, Incorporated TP-LINK HSUPA Modem] on
>> usb-0000:00:1d.0-1.4/input0
>
> Is this the same device?
>
>> [51537.811244] usb 2-1.4: USB disconnect, device number 10
>> [51541.185312] usb 2-1.4: new full-speed USB device number 11 using
>> uhci_hcd
>> [51541.274295] usb 2-1.4: not running at top speed; connect to a high
>> speed hub
>> [51541.301304] usb 2-1.4: New USB device found, idVendor=2357,
>> idProduct=0200
>> [51541.301319] usb 2-1.4: New USB device strings: Mfr=3, Product=2,
>> SerialNumber=4
>> [51541.301329] usb 2-1.4: Product: TP-LINK HSUPA Modem
>> [51541.301338] usb 2-1.4: Manufacturer: TP-LINK, Incorporated
>> [51541.301346] usb 2-1.4: SerialNumber: 863077010232324
>> [51541.309529] usbserial_generic 2-1.4:1.0: The "generic" usb-serial
>> driver is only for testing and one-off prototypes.
>> [51541.309548] usbserial_generic 2-1.4:1.0: Tell linux-usb@vger.kernel.org
>> to add your device to a proper driver.
>> [51541.309560] usbserial_generic 2-1.4:1.0: generic converter detected
>> [51541.310190] usb 2-1.4: generic converter now attached to ttyUSB0
>
> It looks like you unplugged the device and then assigned it to the
> generic USB serial device instead?  What happened to cause it to do
> this?
>
> thanks,
>
> greg k-h
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-- 
Regards,
Anil Nair
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