Motorola usb cable

[Dario Lombardo]

Hi Tomas

On 01/21/2011 03:14 AM, Tomas Kopsa wrote:
> Device: ID 067b:2303 Prolific Technology, Inc. PL2303 Serial Port
> Device Descriptor:
>    bLength                18
>    bDescriptorType         1
>    bcdUSB               1.10
>    bDeviceClass            0 (Defined at Interface level)
>    bDeviceSubClass         0
>    bDeviceProtocol         0
>    bMaxPacketSize0        64
>    idVendor           0x067b Prolific Technology, Inc.
>    idProduct          0x2303 PL2303 Serial Port
This points out that your cable is ok. Both Vendor and product id are 
ok. The motorola cable is shown as idProduct=0x0307.
>    bcdDevice            3.00
>    iManufacturer           1 Prolific Technology Inc.
>    iProduct                2 USB-Serial Controller
>    iSerial                 0
>    bNumConfigurations      1
This is my dmesg using the moto cable

[ 1075.794167] usb 1-1.2: new full speed USB device using ehci_hcd and 
address 53
[ 1075.879904] usb 1-1.2: New USB device found, idVendor=067b, 
idProduct=0307
[ 1075.879910] usb 1-1.2: New USB device strings: Mfr=1, Product=2, 
SerialNumber=3
[ 1075.879914] usb 1-1.2: Product: USB-Serial Controller
[ 1075.879917] usb 1-1.2: Manufacturer: Prolific Technology Inc.
[ 1075.879920] usb 1-1.2: SerialNumber: 06001069

To make it work you have to recompile the module pl2303, with this patch 
(my kernel is 2.6.35.10-74.fc14.i686). Be careful to setup the right 
values in the kernel root Makefile in order to fit your running kernel.


*** drivers/usb/serial/pl2303.h.orig    2011-01-21 09:11:21.000000000 +0100
--- drivers/usb/serial/pl2303.h    2011-01-19 13:54:30.000000000 +0100
***************
*** 21,26 ****
--- 21,27 ----
   #define PL2303_PRODUCT_ID_MMX        0x0612
   #define PL2303_PRODUCT_ID_GPRS        0x0609
   #define PL2303_PRODUCT_ID_HCR331    0x331a
+ #define PL2303_PRODUCT_ID_MOTOROLA  0x0307

   #define ATEN_VENDOR_ID        0x0557
   #define ATEN_VENDOR_ID2        0x0547

*** drivers/usb/serial/pl2303.c.orig    2011-01-21 09:11:09.000000000 +0100
--- drivers/usb/serial/pl2303.c    2011-01-19 13:58:22.000000000 +0100
***************
*** 50,55 ****
--- 50,56 ----
       { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_MMX) },
       { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_GPRS) },
       { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_HCR331) },
+     { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_MOTOROLA) },
       { USB_DEVICE(IODATA_VENDOR_ID, IODATA_PRODUCT_ID) },
       { USB_DEVICE(IODATA_VENDOR_ID, IODATA_PRODUCT_ID_RSAQ5) },
       { USB_DEVICE(ATEN_VENDOR_ID, ATEN_PRODUCT_ID) },

Remove the old module (rmmod pl2303) and insert the new one (insmod 
<yoursrckernelroot>/drivers/usbserial/pl2303). Check that the usbserial 
module is running (modprobe usbserial). If the insmod command fails, it 
depends on the wrong values put in the Makefile. Check
"vermagic" using modinfo against old and new modules.

Hope this helps.
Dario.