Bug#469687: linux-image-2.6.24-1-amd64: floods kernel ring buffer with "SCO packet for unknown connection handle"

[Daniel Tiefnig <dantie@gmx.at>]

Moritz Muehlenhoff wrote:
> On Thu, Mar 06, 2008 at 04:50:25PM +0100, Daniel Tiefnig wrote:
>> Package: linux-image-2.6.24-1-amd64
>> Version: 2.6.24-4
>> Severity: normal
> 
> Does this error still occur with more recent kernel versions?

Hi,

thanks for the quick response! (SCNR)

The problem is still the same with the latest debian kernel package for
unstable AMD64.

Package: linux-image-2.6.26-1-amd64
Version: 2.6.26-12

Btw. I recognize I forgot to mention what hardware I'm using. Or trying
to use. (Stupid me.)

$ hcitool info 00:03:89:7F:A4:6D
Requesting information ...
   BD Address:  00:03:89:7F:A4:6D
   Device Name: 590Plantronics
   LMP Version: 2.0 (0x3) LMP Subversion: 0x9a2
   Manufacturer: Cambridge Silicon Radio (10)
   Features: 0xbf 0xec 0x01 0x00 0x18 0x18 0x00 0x00
         <3-slot packets> <5-slot packets> <encryption> <slot offset>
         <timing accuracy> <role switch> <sniff mode> <channel quality>
         <SCO link> <HV3 packets> <u-law log> <A-law log> <CVSD>
         <AFH cap. slave> <AFH class. slave> <AFH cap. master>
         <AFH class. master>

$ hcitool inq
Inquiring ...
        00:03:89:7F:A4:6D       clock offset: 0x248b    class: 0x240404


What I thought to try next was adding the device to
drivers/bluetooth/hci_usb.c in the kernel source with HCI_BROKEN_ISOC,
as this worked for the "Blue Soleil based adapter" in the referenced
bugreport 444603. But I haven't been able to figure out how to get the
HCI_DEV_CLASS and HCI_DEV_SUBCLASS for my device. Meh.

Any hints are highly appreciated.

daniel