Re: Can't connect a Xbox one controller

[Vinicius Costa Gomes <vinicius.gomes@intel.com>]

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Hi,

Anthony Bourguignon <contact@toniob.net> writes:
>>
>> No. It could be a bug in the xbox controller. But I need to take a
>> closer look at the specification to be really sure.
>
> Can I be of any help ?

Attached is a patch that disables negotiating Flow Control and
Retransmission parameters for the SDP channel only. This is a shot in
the dark, as I could find nothing in the specification that advises
against the current BlueZ behaviour.

Could you give it a try? (but I don't have high hopes for it)

This is looking more like a bug in the controller.

>
> Thanks a lot again
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Cheers,
--
Vinicius


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[-- Attachment #2: disable ertm for SDP --]
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diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index 54ceb1f..aa078b9 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -3216,6 +3216,9 @@ done:
 		if (disable_ertm)
 			break;
 
+		if (chan->psm == cpu_to_le16(L2CAP_PSM_SDP))
+			break;
+
 		if (!(chan->conn->feat_mask & L2CAP_FEAT_ERTM) &&
 		    !(chan->conn->feat_mask & L2CAP_FEAT_STREAMING))
 			break;