Linux kernel source tree https://git.amat.us/linux/atom/drivers/usb/serial/usb_debug.c?h=v2.6.25.2 2006-12-01T22:25:52Z 2006-12-01T22:25:52Z Greg Kroah-Hartman gregkh@suse.de 2002-04-09T19:14:34Z urn:sha1:958e8741bf9ff5d0f0b82b7cef578e96c764a288 It's a simple usb-serial driver that just creates a tty device to read and write from. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>