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Diffstat (limited to 'drivers/bluetooth/btintel.c')
| -rw-r--r-- | drivers/bluetooth/btintel.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/bluetooth/btintel.c b/drivers/bluetooth/btintel.c index a6d75afad71b..8e6b497a2164 100644 --- a/drivers/bluetooth/btintel.c +++ b/drivers/bluetooth/btintel.c @@ -1676,6 +1676,26 @@ static int btintel_setup_combined(struct hci_dev *hdev) BT_DBG("%s", hdev->name); + /* The some controllers have a bug with the first HCI command sent to it + * returning number of completed commands as zero. This would stall the + * command processing in the Bluetooth core. + * + * As a workaround, send HCI Reset command first which will reset the + * number of completed commands and allow normal command processing + * from now on. + */ + if (btintel_test_flag(hdev, INTEL_BROKEN_INITIAL_NCMD)) { + skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, + HCI_INIT_TIMEOUT); + if (IS_ERR(skb)) { + bt_dev_err(hdev, + "sending initial HCI reset failed (%ld)", + PTR_ERR(skb)); + return PTR_ERR(skb); + } + kfree_skb(skb); + } + /* Starting from TyP device, the command parameter and response are * changed even though the OCF for HCI_Intel_Read_Version command * remains same. The legacy devices can handle even if the |