Re: 057c:3800 BlueFRITZ! Bluetooth Stick broken since 2.6.something

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On Fri, Nov 18, 2011, Michael Schmitt wrote:

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< HCI Command: Read Local Version Information (0x04|0x0001) plen 0

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HCI Event: Command Complete (0x0e) plen 12

    Read Local Version Information (0x04|0x0001) ncmd 1
    status 0x00
    HCI Version: 1.2 (0x2) HCI Revision: 0x2006
    LMP Version: 1.2 (0x2) LMP Subversion: 0x1806
    Manufacturer: AVM Berlin (31)

Ok, so this is a 1.2 adapter.

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< HCI Command: Read Local Supported Commands (0x04|0x0002) plen 0

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HCI Event: Command Status (0x0f) plen 4

    Read Local Supported Commands (0x04|0x0002) status 0x01 ncmd 1
    Error: Unknown HCI Command

This is the reason why you're getting a timeout. Since the adapter
claims to support Bluetooth version 1.2 it should also support this HCI
command, so from that perspective it's not conforming to the

Apparently we check for "Bluetooth Core Specification 1.1" 

Shall we change to:

diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index f0fbb02..ed55b33 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c

@@ -562,7 +562,7 @@ static void hci_setup(struct hci_dev *hdev)
 {
        hci_setup_event_mask(hdev);
 
-       if (hdev->lmp_ver > 1)
+       if (hdev->lmp_ver > 2)
                hci_send_cmd(hdev, HCI_OP_READ_LOCAL_COMMANDS, 0, NULL);