Messages in this thread Patch in this message | | | Date | Thu, 12 Jan 2006 13:26:52 +0100 | From | Patrick McHardy <> | Subject | Re: patch: problem with sco |
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Marcel Holtmann wrote: >>A friend and I encountered a problem with sco transfers to a headset using >>linux (vanilla 2.6.15). While all sco packets sent by the headset were >>received there was no outgoing traffic. >> >>After switching debugging output on we found that actually sco_cnt was always >>zero in hci_sched_sco.
I'm seeing the exact same problem with a Logitech "mobile Freedom" headset. I'm using this patch to work around the problem:
--- a/net/bluetooth/hci_core.c +++ b/net/bluetooth/hci_core.c @@ -1239,7 +1239,7 @@ static inline void hci_sched_sco(struct
BT_DBG("%s", hdev->name);
- while (hdev->sco_cnt && (conn = hci_low_sent(hdev, SCO_LINK, "e))) { + while (/* hdev->sco_cnt && */ (conn = hci_low_sent(hdev, SCO_LINK, "e))) { while (quote-- && (skb = skb_dequeue(&conn->data_q))) { BT_DBG("skb %p len %d", skb, skb->len); hci_send_frame(skb);
> send in the information from "hciconfig -a" for this device, because > this is a hardware bug and you can't be sure that you can have eight > outstanding SCO packets.
In my case:
hci0: Type: USB BD Address: 00:10:C6:86:64:27 ACL MTU: 377:10 SCO MTU: 48:64 UP RUNNING PSCAN ISCAN RX bytes:622370 acl:27 sco:12167 events:69 errors:0 TX bytes:588454 acl:25 sco:11520 commands:35 errors:0 Features: 0xff 0xfe 0x0d 0x38 0x08 0x08 0x00 0x00 Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3 Link policy: RSWITCH HOLD SNIFF PARK Link mode: SLAVE ACCEPT Name: 'krusty-0' Class: 0x3e0100 Service Classes: Networking, Rendering, Capturing Device Class: Computer, Uncategorized HCI Ver: 1.2 (0x2) HCI Rev: 0x11 LMP Ver: 1.2 (0x2) LMP Subver: 0x6963 Manufacturer: Broadcom Corporation (15)
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