[sdlion]

Once I found myself reading about device module programming since the common USB-Serial device module (I forgot its name, cdc something) wasn't properly working for a Chinese multiserial port chip inside a GSM cluster modem (one USB device to multiple serial ports).

I was attempting to hack away a simple example but I found the USB-Serial (more) generic driver intended for "test only" and... it just worked.

Another reason for reading about IO calls, schedulers, etc? That "I'm still writing data into your USB flash drive even when the GUI says it finished 5 minutes ago" that I hate so much.