Default [Q] usb - rs232 converters
USB to go works with this device, using kernel from it://github.com/ZTE-BLADE/ZTE-BLADE-2.6.32.git and an special OTG cable.

I tried it with keyboard, mouse and storage, but serial converters do not work.

I compiled the cp210x.ko module and the mos7720.ko, and successfully connected devices.

Code:
<7>[04-09 10:50:12.498753] [12: khubd]hub 1-1:1.0: state 7 ports 4 chg 0000 evt 0010
<7>[04-09 10:50:12.498753] [12: khubd]hub 1-1:1.0: port 4, status 0101, change 0001, 12 Mb/s
<7>[04-09 10:50:12.668756] [12: khubd]hub 1-1:1.0: debounce: port 4: total 100ms stable 100ms status 0x101
<6>[04-09 10:50:12.748751] [12: khubd]usb 1-1.4: new full speed USB device using msm_hsusb_host and address 9
<7>[04-09 10:50:12.858751] [12: khubd]usb 1-1.4: default language 0x0409
<7>[04-09 10:50:12.858751] [12: khubd]usb 1-1.4: udev 9, busnum 1, minor = 8
<6>[04-09 10:50:12.858751] [12: khubd]usb 1-1.4: New USB device found, idVendor=10c4, idProduct=ea60
<6>[04-09 10:50:12.858751] [12: khubd]usb 1-1.4: New USB device strings: Mfr=1, Product=2, SerialNumber=3
<6>[04-09 10:50:12.858751] [12: khubd]usb 1-1.4: Product: ELV USB-I2C-Interface
<6>[04-09 10:50:12.858751] [12: khubd]usb 1-1.4: Manufacturer: Silicon Labs
<6>[04-09 10:50:12.858751] [12: khubd]usb 1-1.4: SerialNumber: VAKVLXWTTHWZAE3L
<7>[04-09 10:50:12.858751] [12: khubd]usb 1-1.4: uevent
<7>[04-09 10:50:12.858751] [12: khubd]usb 1-1.4: usb_probe_device
<6>[04-09 10:50:12.858751] [12: khubd]usb 1-1.4: configuration #1 chosen from 1 choice
<7>[04-09 10:50:12.858751] [12: khubd]usb 1-1.4: adding 1-1.4:1.0 (config #1, interface 0)
<7>[04-09 10:50:12.868760] [12: khubd]usb 1-1.4:1.0: uevent
<7>[04-09 10:50:12.868760] [12: khubd]cp210x 1-1.4:1.0: usb_probe_interface
<7>[04-09 10:50:12.868760] [12: khubd]cp210x 1-1.4:1.0: usb_probe_interface - got id
<6>[04-09 10:50:12.868760] [12: khubd]cp210x 1-1.4:1.0: cp210x converter detected
<6>[04-09 10:50:12.958750] [12: khubd]usb 1-1.4: reset full speed USB device using msm_hsusb_host and address 9
<6>[04-09 10:50:13.068751] [12: khubd]usb 1-1.4: cp210x converter now attached to ttyUSB1
<7>[04-09 10:50:13.068751] [12: khubd]hub 1-1:1.0: state 7 ports 4 chg 0000 evt 0010
Both show similar problems, I got the devices, but when I try to use them I get this line in the log and no real communication.

Code:
<7>[04-09 10:52:26.358770] usb usb1: clear tt buffer port 1, a9 ep1 t00408d80
Did somebody successfully use any serial converter?