[Bug 60824] [PATCH][regression] Cambridge Silicon Radio, Ltd Bluetooth Dongle unusable

[bugzilla-daemon@bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=60824

Flole (flole@flole.de) changed:

           What    |Removed                     |Added
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                 CC|                            |flole@flole.de

--- Comment #154 from Flole (flole@flole.de) ---
(In reply to Alex from comment #86)
> Hi Swyter,
> 
> I also tried your patch v2 and actually in my case see no difference with
> the previous ones I tried (see my comments 55/56
> https://bugzilla.kernel.org/show_bug.cgi?id=60824#c55 )
> 
> Linux recognizes the controller, but it's unusable:
> 
> Can't init device hci0: Invalid argument (22)
> 
> > HCI Event: Command Complete (0x0e) plen 4                                   
> >                                                                  #22 [hci0]
> > 11.191461
>       Set Event Filter (0x03|0x0005) ncmd 1
>         Status: Invalid HCI Command Parameters (0x12)
> = Close Index: 00:1A:7D:DA:71:12                                            
> [hci0] 11.191493
> 
> 
> I've seen several people here have this issue, and I believe that comment 59
> may be quite relevant here:
> 
> > Set Event fails, looking at hci_core.c the set filter and previous calls
> are
> > made only if device supports BREDR, is there any way to tell device doesn't
> > support, or patch this ?

I have the same device, and my fix was simply changing the #define that checks
if a device supports BREDR to "false" (aka disabling BREDR support completely)
and that solved it.

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