On Mon, Apr 13, 2015 at 10:09:27PM +0200, Marek Belisko wrote: > From: "H. Nikolaus Schaller" <hns@xxxxxxxxxxxxx> > > 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 But it is outdated.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= are only available > if compiled as a kernel module and have been superseded by a /sys interface.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@xxxxxxxxxxxxx> > Signed-off-by: Marek Belisko <marek@xxxxxxxxxxxxx> > --- > > changes from v1: > - add modern variant with /sys as preferred but also old one works so > keep it in documentation (was removed in first version which was not correct) Thanks for the update. Much better. > Documentation/usb/usb-serial.txt | 11 +++++++---- > 1 file changed, 7 insertions(+), 4 deletions(-) > > diff --git a/Documentation/usb/usb-serial.txt b/Documentation/usb/usb-serial.txt > index 947fa62..3f31c96 100644 > --- a/Documentation/usb/usb-serial.txt > +++ b/Documentation/usb/usb-serial.txt > @@ -465,12 +465,15 @@ Generic Serial driver > device, and does not support any kind of device flow control. All that > 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: > - insmod usbserial vendor=0x#### product=0x#### > + > + To enable the generic driver to recognize your device, provide > + echo #### #### >/sys/bus/usb-serial/drivers/generic/new_id > where the #### is replaced with the hex representation of your device's > vendor id and product id. Could you use distinct symbols for vendor and product if (e.g. <vid> and <pid>) to make it clear which is which? > + If the driver is compiled as a module, you can either > + modprobe usbserial This isn't needed. > + or, you can also provide the parameters directly This could be "you can also provide one id when loading the module". > + insmod usbserial vendor=0x#### product=0x#### Thanks, Johan -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
