On Mon, Sep 19, 2011 at 11:13:33AM +0530, Felix Varghese wrote:

quoted

Just do:
? ? ? ?modprobe usb_serial vendor=0x0000 product=0x0000
with the proper vendor and product ids for your device, then plug it in.

No kernel changes needed at all, just have a pair of bulk in/out
endpoints and all will work automatically for you.

Thanks Greg, I had thought that the usbserial driver would only work
with proper CDC class virtual COM devices.
I compiled it and tried it on my device and it worked fine! I was able
to do bidirectional communication. So at least now I can be sure that
one end is working. But the same device with the same firmware still
doesn't work with the (customized) usb-skeleton. What could be wrong?

As I don't know what you customized exactly, nor how your hardware
exactly works, I could not say, sorry.

greg k-h