On Sat, 9 Aug 2014, Yves-Alexis Perez wrote: > > If you write "echo 0 >/sys/bus/usb/devices/usb1/authorized_default", it > > will not deauthorize any currently plugged devices. All it will do is > > change the default authorization value assigned to new devices when > > they are plugged in. > > Ok, it does seem to work. Two things, though. > > - before doing anything, I have: > > grep . /sys/bus/usb/devices/*/authorized_default > /sys/bus/usb/devices/usb1/authorized_default:1 > /sys/bus/usb/devices/usb2/authorized_default:1 > > shouldn't it be -1? The -1 value you see in the module parameter isn't used in any of the sysfs files. It means that a new bus's authorized_default value should be set to 0 if the bus is wireless and 1 if the bus is wired. > After putting 0 there, unplugging my USB mouse and re-plugging it, the > mouse doesn't work, still gets enumerated: > > Aug 9 09:06:24 scapa kernel: [33176.030104] usb 1-1.5.1: new low-speed USB device number 12 using ehci-pci > Aug 9 09:06:24 scapa kernel: [33176.143702] usb 1-1.5.1: New USB device found, idVendor=046d, idProduct=c00c > Aug 9 09:06:24 scapa kernel: [33176.143709] usb 1-1.5.1: New USB device strings: Mfr=1, Product=2, SerialNumber=0 > Aug 9 09:06:24 scapa kernel: [33176.143713] usb 1-1.5.1: Product: USB Optical Mouse > Aug 9 09:06:24 scapa kernel: [33176.143716] usb 1-1.5.1: Manufacturer: Logitech > > but it's not handled by the input driver like usually: > > Aug 9 09:06:50 scapa kernel: [33202.016667] input: Logitech USB Optical Mouse as /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.5/1-1.5.1/1-1.5.1:1.0/0003:046D:C00C.0004/input/input17 > Aug 9 09:06:50 scapa kernel: [33202.016975] hid-generic 0003:046D:C00C.0004: input,hidraw0: USB HID v1.10 Mouse [Logitech USB Optical Mouse] on usb-0000:00:1a.0-1.5.1/input0 Yes, that's how it's supposed to work. The device is enumerated, but drivers aren't allowed to bind to it. > Anyway, thanks for the tip, and again sorry for the noise. You're welcome. Alan Stern -- 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
