[Bugme-new] [Bug 41232] New: Channel switching on Hauppauge Nova-T stick fails randomly

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=41232

           Summary: Channel switching on Hauppauge Nova-T stick fails
                    randomly
           Product: v4l-dvb
           Version: unspecified
    Kernel Version: 3.0
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: dvb-usb
        AssignedTo: v4l-dvb_dvb-usb at kernel-bugs.osdl.org
        ReportedBy: q222 at gmx.com
        Regression: Yes


Switching channels in kaffine on my DVB-T stick worked fine up to 2.6.39. Since
upgrading to 3.0, if fails about half the time with no discernable pattern.

/var/log/warn is littered with messages like these:
Aug 14 16:46:56 coral kernel: [278131.974707] DiB0070 I2C write failed
Aug 14 16:47:06 coral kernel: [278142.272778] dib0700: tx buffer length is
larger than 4. Not supported.
Aug 14 16:47:06 coral kernel: [278142.276734] DiB0070 I2C write failed
Aug 14 16:48:52 coral kernel: [278248.743036] DiB0070 I2C write failed
Aug 14 16:49:38 coral kernel: [278294.082043] DiB0070 I2C write failed
Aug 14 16:49:42 coral kernel: [278298.805911] dib0700: tx buffer length is
larger than 4. Not supported.

The device in question uses the dvb-usb-dib0700-1.20.fw firmware file.

lsusb output:
Bus 002 Device 002: ID 2040:7070 Hauppauge Nova-T Stick 3
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0 
  bDeviceProtocol         0 
  bMaxPacketSize0        64
  idVendor           0x2040 Hauppauge
  idProduct          0x7070 Nova-T Stick 3
  bcdDevice            1.00
  iManufacturer           1 Hauppauge
  iProduct                2 Nova-T Stick
  iSerial                 3 4032310248
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           46
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0x80
      (Bus Powered)
    MaxPower              500mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           4
      bInterfaceClass       255 Vendor Specific Class
      bInterfaceSubClass      0 
      bInterfaceProtocol      0 
      iInterface              0 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x01  EP 1 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               1
      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              10
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x82  EP 2 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               1
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x83  EP 3 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               1
Device Qualifier (for other device speed):
  bLength                10
  bDescriptorType         6
  bcdUSB               2.00
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0 
  bDeviceProtocol         0 
  bMaxPacketSize0        64
  bNumConfigurations      1
Device Status:     0x0000
  (Bus Powered)

-- 
Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.