Hi, Great, thanks! using /sys/bus/usb/drivers/option/unbind instead of usb-serial worked just fine. Not sure why, I leave that for you guys. root@italo-desktop:~/g# ls -l /dev/serial/by-path/pci-0000:00:1d.7-usb-0:2.6:* lrwxrwxrwx 1 root root 14 2012-06-08 03:16 /dev/serial/by-path/pci-0000:00:1d.7-usb-0:2.6:1.0-port0 -> ../../ttyUSB75 lrwxrwxrwx 1 root root 14 2012-06-08 03:16 /dev/serial/by-path/pci-0000:00:1d.7-usb-0:2.6:1.1-port0 -> ../../ttyUSB76 lrwxrwxrwx 1 root root 14 2012-06-08 03:16 /dev/serial/by-path/pci-0000:00:1d.7-usb-0:2.6:1.2-port0 -> ../../ttyUSB77 lrwxrwxrwx 1 root root 14 2012-06-08 03:16 /dev/serial/by-path/pci-0000:00:1d.7-usb-0:2.6:1.3-port0 -> ../../ttyUSB78 lrwxrwxrwx 1 root root 14 2012-06-08 03:16 /dev/serial/by-path/pci-0000:00:1d.7-usb-0:2.6:1.4-port0 -> ../../ttyUSB79 root@italo-desktop:/etc# echo -n "1-2.6:1.1" > /sys/bus/usb/drivers/option/unbind root@italo-desktop:/etc# echo -n "1-2.6:1.2" > /sys/bus/usb/drivers/option/unbind root@italo-desktop:/etc# echo -n "1-2.6:1.3" > /sys/bus/usb/drivers/option/unbind root@italo-desktop:/etc# echo -n "1-2.6:1.4" > /sys/bus/usb/drivers/option/unbind root@italo-desktop:~/g# ls -l /dev/serial/by-path/pci-0000:00:1d.7-usb-0:2.6:* lrwxrwxrwx 1 root root 14 2012-06-08 03:16 /dev/serial/by-path/pci-0000:00:1d.7-usb-0:2.6:1.0-port0 -> ../../ttyUSB75 the device is still up and running on ttyUSB75, and I´ve been able to plug new devices as I wanted. So right now its just a matter of cleaning it up before plugging in new devices, works for me, as it should take a while to get to 255 devices (right now I have 80). Do you guys still want the information on the devices? Like models, output from lsusb, dmesg, etc? On Fri, Jun 8, 2012 at 4:53 AM, Bjørn Mork <bjorn@xxxxxxx> wrote: > Bjørn Mork <bjorn@xxxxxxx> writes: >> Bjørn Mork <bjorn@xxxxxxx> writes: >>> Italo Migotto <imigotto@xxxxxxxxx> writes: >>> >>>> they are modems. yes, I only use one of the interfaces, but couldn´t >>>> find a way to unbind individual interfaces, only the whole device. >>> >>> You can unbind individual ports like this: >>> >>> echo ttyUSB0 > /sys/bus/usb-serial/drivers/<drivername>/unbind >> >> Sorry. That didn't work as expected. Should be fixed... > > ... or maybe not. > > Took a quick peek at drivers/usb/serial/bus.c and became more confused. > usb_serial_device_remove() will just unregister the tty device, and > usb_serial_device_probe() will the let you register it again. So you > save a tty device, but unbinding from the usb-serial driver this way > doesn't free any other resources. In particular not the precious ttyUSB > minors. > > I find that behaviour a bit confusing. I did expect that unbinding > would cause all resources related to the unbound port to be freed and > made available for other drivers and/or devices. > > But I don't see any way this can be changed either. If we propagate the > unbind to the usb driver, then there is no way to keep usb-serial "bind" > working like before. And I guess that's not acceptable... > > And the tools to do what I want are already there: Just unbind from the > usb driver instead of the usb-serial driver. So better leave it as it is. > > This is probably even already documented somewhere :-) > > > Bjørn -- 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
