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Message-ID: <237bbd312054ce6433af002f5e1213c7.squirrel@iwavesystems.com>
Date: Fri, 28 Aug 2015 09:31:40 -0400
Subject: USB  BT gives problem If device plugged during boot to platform.
From: krishnaks@iwavesystems.com
To: linux-bluetooth@vger.kernel.org
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Hi,

I am porting bluez 5.33 to android kitkat 4.4.3.I am using USB based
Bluetooth device. I referred instruction in
http://git.kernel.org/cgit/bluetooth/bluez.git/tree/android/README and
able to build.
After botting Android image with USB dongle connected and type "hciconfig
hci0 up" on console, It is throwing following error.
Can't init device hci0: Unknown error 132 (132)

If I Type hciconfig -a . It gives following.
hci0:   Type: BR/EDR  Bus: USB
        BD Address: 5C:F3:70:6C:5E:FB  ACL MTU: 1021:8  SCO MTU: 64:1
        DOWN
        RX bytes:547 acl:0 sco:0 events:27 errors:0
        TX bytes:384 acl:0 sco:0 commands:27 errors:0
        Features: 0xbf 0xfe 0xcf 0xfe 0xdb 0xff 0x7b 0x87
        Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3
        Link policy: RSWITCH SNIFF
        Link mode: SLAVE ACCEPT



But If I unplug and plug USB dongle, and then try same command (hciconfig
hci0 up), It works. Even "hcitool scan" command also working after that.

Why 1st time not working when USB dongle is connected?
Also when I check Bluez debug log in logcat.
I am getting one error log when USB dongle connected during boot.
E/bluetoothd(  841): Failed to set mode: Blocked through rfkill (0x12).

Please let me know If I missed any settings

Thanks in advance,