Re: [Patch v2] Bluetooth: Fix SCO link type change handling on connection complete

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Hi Kuba,

> Synchronous connections are initially created with type eSCO.
> Link manager may reject proposed link parameters, which triggers
> connection setup retry with a different set. Link type embedded
> in responses should be disregarded until Synchronous Connect Complete
> returns Success (0x00). Current code updates link type every time
> which creates an issue when link type changes to SCO and back to eSCO
> on further attepts.
> 
> Issue happens with BlackBerry 9100 and 9700 with Intel WilkinsPeak
> on third connection setup attept
> 
> 2015-05-18 01:27:57.332242 < HCI Command: Setup Synchronous Connection (0x01|0x0028) plen 17
>    handle 256 voice setting 0x0060 ptype 0x0380
> 2015-05-18 01:27:57.333604 > HCI Event: Command Status (0x0f) plen 4
>    Setup Synchronous Connection (0x01|0x0028) status 0x00 ncmd 1
> 2015-05-18 01:27:57.334614 > HCI Event: Synchronous Connect Complete (0x2c) plen 17
>    status 0x1a handle 0 bdaddr 30:7C:30:B3:A8:86 type SCO
>    Error: Unsupported Remote Feature / Unsupported LMP Feature
> 2015-05-18 01:27:57.334895 < HCI Command: Setup Synchronous Connection (0x01|0x0028) plen 17
>    handle 256 voice setting 0x0060 ptype 0x0380
> 2015-05-18 01:27:57.335601 > HCI Event: Command Status (0x0f) plen 4
>    Setup Synchronous Connection (0x01|0x0028) status 0x00 ncmd 1
> 2015-05-18 01:27:57.336610 > HCI Event: Synchronous Connect Complete (0x2c) plen 17
>    status 0x1a handle 0 bdaddr 30:7C:30:B3:A8:86 type SCO
>    Error: Unsupported Remote Feature / Unsupported LMP Feature
> 2015-05-18 01:27:57.336685 < HCI Command: Setup Synchronous Connection (0x01|0x0028) plen 17
>    handle 256 voice setting 0x0060 ptype 0x03c8
> 2015-05-18 01:27:57.337603 > HCI Event: Command Status (0x0f) plen 4
>    Setup Synchronous Connection (0x01|0x0028) status 0x00 ncmd 1
> 2015-05-18 01:27:57.342608 > HCI Event: Max Slots Change (0x1b) plen 3
>    handle 256 slots 1
> 2015-05-18 01:27:57.377631 > HCI Event: Synchronous Connect Complete (0x2c) plen 17
>    status 0x00 handle 257 bdaddr 30:7C:30:B3:A8:86 type eSCO
>    Air mode: CVSD
> 
> Signed-off-by: Kuba Pawlak <kubax.t.pawlak@xxxxxxxxx>
> ---
> net/bluetooth/hci_event.c | 12 ++++++++++--
> 1 file changed, 10 insertions(+), 2 deletions(-)

patch has been applied to bluetooth-next tree.

Regards

Marcel

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