linux-kernel - Re: 2.6.29rc1 breakes usb: hiddev device no longer available

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Date:	Mon, 26 Jan 2009 19:27:07 +0100
From:	Folkert van Heusden <folkert@...heusden.com>
To:	linux-kernel@...r.kernel.org
Subject: Re: 2.6.29rc1 breakes usb: hiddev device no longer available

> Since version 2.6.29rc1 querying cleware USb devices no longer works.
> 2.6.28 works fine. 2.6.29-rc2 also no longer works.

This is the WORKING situation:
open("/dev/usb/hiddev0", O_RDWR)        = 3
ioctl(3, HIDIOCGDEVINFO, 0xbfa71a48)    = 0
ioctl(3, HIDIOCAPPLICATION, 0)          = -6291455
ioctl(3, HIDIOCGSTRING, 0x804e2c0)      = 7

the is the FAILURE situation (2.6.29-rc*):
open("/dev/usb/hiddev0", O_RDWR)        = 3
ioctl(3, HIDIOCGDEVINFO, 0xbf90c0d8)    = 0
ioctl(3, HIDIOCAPPLICATION, 0)          = -6291455
ioctl(3, HIDIOCGSTRING, 0x804e2c0)      = -1 ENODEV (No such device)

Bus 002 Device 003: ID 0d50:0008 Cleware GmbH 
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               1.10
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0 
  bDeviceProtocol         0 
  bMaxPacketSize0         8
  idVendor           0x0d50 Cleware GmbH
  idProduct          0x0008 
  bcdDevice            0.17
  iManufacturer           1 Cleware GmbH
  iProduct                2 USB-Switch
  iSerial                 3 000175C
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           34
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0x80
      (Bus Powered)
    MaxPower              120mA
    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 
        HID Device Descriptor:
          bLength                 9
          bDescriptorType        33
          bcdHID               1.00
          bCountryCode            0 Not supported
          bNumDescriptors         1
          bDescriptorType        34 Report
          wDescriptorLength      48
         Report Descriptors: 
           ** UNAVAILABLE **
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0008  1x 8 bytes
        bInterval              50
Device Status:     0x0000
  (Bus Powered)


Folkert van Heusden

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