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 This file is an official description how to use it: Documentation/usb/usb-serial.txt But it is outdated. The parameters vendor= and product= have been superseded by a /sys interface.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>
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@ -465,12 +465,14 @@ Generic Serial driver
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device, and does not support any kind of device flow control. All that
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is required of your device is that it has at least one bulk in endpoint,
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or one bulk out endpoint.
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To enable the generic driver to recognize your device, build the driver
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as a module and load it by the following invocation:
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To enable the generic driver to recognize your device, provide
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echo <vid> <pid> >/sys/bus/usb-serial/drivers/generic/new_id
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where the <vid> and <pid> is replaced with the hex representation of your
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device's vendor id and product id.
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If the driver is compiled as a module you can also provide one id when
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loading the module
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insmod usbserial vendor=0x#### product=0x####
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where the #### is replaced with the hex representation of your device's
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vendor id and product id.
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This driver has been successfully used to connect to the NetChip USB
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development board, providing a way to develop USB firmware without
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