ts_open

Hi~..
I use tiny6410 + android..

When I use default config_android_a70, .ubi, the booting of android is OK.

I want to do not use key button, and touch screen.. 
So I have changed 2 line at config_android_a70 

#CONFIG_INPUT_KEYBOARD=y
#CONFIG_KEYBOARD_GPIO=y

then 
cp config_android_a70 .config; make

when booting...
the error message is below..

----------------------------------
one_wire_status: 4
1Wire touchscreen OK
TouchDevice: /dev/touchscreen-1wire
ts_open: No such device
-----------------------------------

I can't understand that I just change KEYBOARD config but error came from
touchscreen.

Help~ plz...