kernel.git/drivers/usb/serial/usb_debug.c, branch linux-2.6.25.yHosts the 0x221E linux distro kernel.
https://git.0xinfinity.dev/distro/kernel.git/atom?h=linux-2.6.25.y2006-12-01T22:25:52ZUSB: add driver for the USB debug devices2006-12-01T22:25:52ZGreg Kroah-Hartman2002-04-09T19:14:34Zurn: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>