This informations could be useful for configuration scripts. Various drivers do the same. regards, Bernd 2012/12/15 Oliver Hartkopp <socketcan@xxxxxxxxxxxx> On 15.12.2012 07:53, Bernd Krumboeck wrote: > +++ b/Documentation/ABI/testing/sysfs-driver-usb_8dev > @@ -0,0 +1,13 @@ > +What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/firmware > +Date: December 2012 > +Contact: Bernd Krumboeck <krumboeck@xxxxxxxxxxxxxxx> > +Description: > + Returns the firmware version in the form "<major>.<minor>". > + This file is readonly. > + > +What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/hardware > +Date: December 2012 > +Contact: Bernd Krumboeck <krumboeck@xxxxxxxxxxxxxxx> > +Description: > + Returns the hardware version in the form "<major>.<minor>". > + This file is readonly. Hello Bernd, sorry but probably i missed the discussion about this point: Why do your create some extra sysfs entries for plain static information that could be retrieved from the syslog too? E.g. when attaching the PCAN USB, i get this: usb 2-1.3: new full-speed USB device number 6 using ehci-pci usb 2-1.3: New USB device found, idVendor=0c72, idProduct=000c usb 2-1.3: New USB device strings: Mfr=0, Product=3, SerialNumber=0 usb 2-1.3: Product: VER1:PEAK VER2:02.8.01 DAT :06.05.2004 TIME:09:35:37 ... peak_usb 2-1.3:1.0: PEAK-System PCAN-USB adapter hwrev 28 serial FFFFFFFF (1 channel) peak_usb 2-1.3:1.0 can2: attached to PCAN-USB channel 0 (device 67) usbcore: registered new interface driver peak_usb Don't you think it's a better idea to add an additional line to the syslog telling about this *static* hw/sw information than adding the extra complexity and documentation for the sysfs handling? Regards, Oliver -- 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