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    Subject[bluetooth] linux-3.x regression (bisected)
    Good day.

    A while ago, my noname USB Bluetooth adapter stopped working, with from
    that point on only "Bluetooth: hci0 command tx timeout" appearing in the
    kernel messages.

    I just now got around to looking at it and bisected this to commit

    Author: Andre Guedes <>
    Date: Thu Jun 30 19:20:55 2011 -0300

    Bluetooth: Add lmp_host_le_capable() macro

    Since we have the extended LMP features properly implemented, we
    should check the LMP_HOST_LE bit to know if the host supports LE.

    Signed-off-by: Andre Guedes <>
    Signed-off-by: Gustavo F. Padovan <>

    while that commit cannot be reverted outright due to dependencies,
    reverting it functionally fixes things for me. That is, Bluetooth works
    again after applying (to linux-3.1.6):

    diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
    index 56943ad..c7f794e 100644
    --- a/net/bluetooth/hci_core.c
    +++ b/net/bluetooth/hci_core.c
    @@ -540,7 +540,7 @@ int hci_dev_open(__u16 dev)
    ret = __hci_request(hdev, hci_init_req, 0,


    - if (lmp_host_le_capable(hdev))
    + if (lmp_le_capable(hdev))
    ret = __hci_request(hdev, hci_le_init_req, 0,


    It seems that my adapter wasn't ready for the change. It is a:
    002 Device 002: ID 1131:1004 Integrated System Solution Corp. Bluetooth

    If more specific information is wanted (to add adapter-specific quirk
    handling, perhaps?) please be verbose on how to obtain it. I don't know
    anything about Bluetooth


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      Last update: 2011-12-23 00:45    [W:0.026 / U:8.056 seconds]
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