Hi,
when I run "lsusb -vvv", I get "UNRECOGNIZED" for the HID descriptor for one device:
----
Bus 004 Device 008: ID 0e20:0101 Pegasus Technologies Ltd. NoteTaker
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.10
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 8
idVendor 0x0e20 Pegasus Technologies Ltd.
idProduct 0x0101 NoteTaker
bcdDevice 3.03
iManufacturer 4 Pegasus Technologies Ltd.
iProduct 56 NoteTaker FW Ver 3.03
iSerial 100 0003-0003
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 59
bNumInterfaces 2
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xa0
(Bus Powered)
Remote Wakeup
MaxPower 100mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 3 Human Interface Device
bInterfaceSubClass 0 No Subclass
bInterfaceProtocol 0 None
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 1
** UNRECOGNIZED: 09 21 10 01 00 01 22 24 00
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 3 Human Interface Device
bInterfaceSubClass 0 No Subclass
bInterfaceProtocol 0 None
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x82 EP 2 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0008 1x 8 bytes
bInterval 1
** UNRECOGNIZED: 09 21 10 01 00 01 22 9d 00
Device Status: 0x0001
Self Powered
----
[...]
This is using the version I got via "git clone git://github.com/gregkh/usbutils.git" just 5 minutes ago.
I checked the source code "lsusb.c" for this output and just above it, it says:
/* often a misplaced class descriptor */
What does that mean? Is that the case here?
Note that the device works just fine under Linux, I just got curious what other data there is in the HID descriptor.
cheers,
Danny
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