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From: "Andreas Gaufer" <ag@new-media-artists.de>
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Subject: [Bluez-devel] Device Busy during "hcitool info" or "sdptool search"
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Date: Wed, 17 Dec 2003 17:38:52 +0100

Hi,

I appreciate your great work and dedication to the bluetooth technologie.
The blueZ Stack is the most stable BT-Software i ever used on a PC-Style
Hardware and im verry happy that it is avaiable. I hope i can contribute at
some point, but i think i need to keep on learning to be able to. Heres what
i found out for now.

I have noticed that

"hcitool inq" returnes "Device or resource busy" every time if a
"hcitool info <mac>" || "sdptool search --bdaddr <mac> <someservice>" is
running on the same hciX device.

Is this normal or should this be considered a problem?
If it is normal, i would appreciate some pointer to readings that could make
me understand why this happens.

Im using:

hcitool - HCI Tool ver 2.3
sdptool - SDP Tool v1.5

kernel 2.4.23
BlueZ Core ver 2.3
BlueZ RFCOMM ver 1.1
BlueZ L2CAP ver 2.3
BlueZ HCI USB driver ver 2.4


The problem appears with both USB-BT Devices i own:

MSI PC2PC Bluetooth
[root@localhost root]# hciconfig hci0 -a
	  hci0:   Type: USB
        BD Address: 00:10:DC:E9:32:D1 ACL MTU: 192:8  SCO MTU: 64:8
        UP RUNNING PSCAN ISCAN
        Features: 0xff 0xff 0x0f 0x00
        Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3
        Link policy:
        Link mode: SLAVE ACCEPT
        Name: 'TuxBox'
        Class: 0x000000
        Service Classes: Unspecified
        Device Class: Miscellaneous,
        HCI Ver: 1.1 (0x1) HCI Rev: 0x20d LMP Ver: 1.1 (0x1) LMP Subver:
0x20d
        Manufacturer: Cambridge Silicon Radio (10)
[root@localhost root]# hciconfig hci0 revision
hci0:   Type: USB
        BD Address: 00:10:DC:E9:32:D1 ACL MTU: 192:8  SCO MTU: 64:8
        HCI 16.4 (bc02x)

and also a

Acer BT-600
[root@localhost root]# hciconfig hci0 -a
hci0:   Type: USB
        BD Address: 00:02:72:01:4C:B8 ACL MTU: 192:8  SCO MTU: 64:8
        UP RUNNING PSCAN ISCAN
        Features: 0xff 0xff 0x0f 0x00
        Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3
        Link policy:
        Link mode: SLAVE ACCEPT
        Name: 'TuxBox'
        Class: 0x000000
        Service Classes: Unspecified
        Device Class: Miscellaneous,
        HCI Ver: 1.1 (0x1) HCI Rev: 0x20d LMP Ver: 1.1 (0x1) LMP Subver:
0x20d
        Manufacturer: Cambridge Silicon Radio (10)
[root@localhost root]# hciconfig hci0 revision
hci0:   Type: USB
        BD Address: 00:02:72:01:4C:B8 ACL MTU: 192:8  SCO MTU: 64:8
        HCI 16.4 (bc02x)

I saw some threads that discuss problems that could be similar to the one
discribed here but they all where quite old and didnt point to a solution.
Also a lot of things changed in BlueZ and the Tools so i hope im not
bothering you starting this topic again.
If any further information is needed for tracking the problem i?ll be happy
to provide it.

Greetings

Andreas Gaufer




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