Broadcom USB Bluetooth adapters report a maximum of zero SCO packets
in-flight, killing SCO. Use a reasonable count instead in that case.
Signed-off-by: Olivier Galibert <[email protected]>
---
I don't think that could be reasonably done as a quirk. Simple
examination of the .inf coming with the windows driver shows that 100+
different models may be having this problem. Also, it can't break
already working adapters, so why bother.
net/bluetooth/hci_event.c | 7 +++++++
1 files changed, 7 insertions(+), 0 deletions(-)
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -324,6 +324,13 @@ static void hci_cc_info_param(struct hci
hdev->acl_pkts = hdev->acl_cnt = __le16_to_cpu(bs->acl_max_pkt);
hdev->sco_pkts = hdev->sco_cnt = __le16_to_cpu(bs->sco_max_pkt);
+ /* Some buggy USB bluetooth adapters, Broadcom in
+ particular, answer zero as the max number of sco
+ packets in flight. Use a reasonable value
+ instead */
+ if (hdev->sco_pkts == 0)
+ hdev->sco_pkts = hdev->sco_cnt = 8
+
BT_DBG("%s mtu: acl %d, sco %d max_pkt: acl %d, sco %d", hdev->name,
hdev->acl_mtu, hdev->sco_mtu, hdev->acl_pkts, hdev->sco_pkts);
break;
-
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