Commit e3aa205a authored Apr 20, 2015 by H. Nikolaus Schaller Committed by Jonathan Corbet May 07, 2015

Documentation usb serial: fixed how to provide vendor and product id

While trying to test a Cinterion GSM/GPS/3G module I had reconfigured
the USB interface by mistake and therefore needed to run a different
USB driver than CDC-ACM. It turned out that I need the "usbserial" driver.

This file is an official description how to use it:
Documentation/usb/usb-serial.txt

But it is outdated. The parameters vendor= and product= have been
superseded by a /sys interface.

Here was the solution:

https://bbs.archlinux.org/viewtopic.php?id=175499



  insmod usbserial vendor=0x#### product=0x####

becomes (first #### is vendor, second is product)

  modprobe usbserial
  echo #### #### >/sys/bus/usb-serial/drivers/generic/new_id

This patch changes the documentation file to describe the modern variant.
Please note that the old one still works (if compiled as module).

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Signed-off-by: Marek Belisko <marek@goldelico.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

parent 4ae711f4

Documentation/usb/usb-serial.txt

+7 −5

Original line number	Diff line number	Diff line
		@@ -466,11 +466,13 @@ Generic Serial driver
		is required of your device is that it has at least one bulk in endpoint,
		or one bulk out endpoint.

		To enable the generic driver to recognize your device, build the driver
		as a module and load it by the following invocation:
		To enable the generic driver to recognize your device, provide
		echo <vid> <pid> >/sys/bus/usb-serial/drivers/generic/new_id
		where the <vid> and <pid> is replaced with the hex representation of your
		device's vendor id and product id.
		If the driver is compiled as a module you can also provide one id when
		loading the module
		insmod usbserial vendor=0x#### product=0x####
		where the #### is replaced with the hex representation of your device's
		vendor id and product id.

		This driver has been successfully used to connect to the NetChip USB
		development board, providing a way to develop USB firmware without