On Monday, August 22, 2016 11:23:26 PM CEST H. Nikolaus Schaller wrote: > I see what you mean, but kernel divides between directly connected UART and > USB-connected UART. > > drivers/usb/serial/ vs. drivers/tty/serial/
That distinction purely exists for historic reasons. I'd argue that the former should actually go into drivers/tty/usb or similar. A long time ago, we commonly sorted device drivers by how they were attached to the system (as drivers/usb/serial/ and drivers/usb/storage still do), but almost everything is now sorted according to how it is used instead. Arnd