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Subject: Re: bluetooth-next HCI user channel issue
From: Marcel Holtmann <marcel@holtmann.org>
In-Reply-To: <5534D661.1000703@intel.com>
Date: Mon, 20 Apr 2015 19:43:36 +0200
Cc: linux-bluetooth@vger.kernel.org
Message-Id: <A7E7D666-B172-4A02-A7E9-86483D630C81@holtmann.org>
References: <5534D661.1000703@intel.com>
To: Loic Poulain <loic.poulain@intel.com>
Sender: linux-bluetooth-owner@vger.kernel.org
List-ID: <linux-bluetooth.vger.kernel.org>

Hi Loic,

> Seems there is a regression in bluetooth-next.
> I'm unable to communicate with my Intel WP chip via HCI User channel.
> To test user channel, I use bluemoon:
> $ hciconfig hci0 down
> $ bluemoon -i hci0
> Bluemoon configuration utility ver 5.30
> 
> Then bluemoon hangs up, no HCI event...
> 
> HCI packet seems successfully sent, but no HCI response:
> [  491.525914] Bluetooth: hci0
> [  491.525918] Bluetooth: hci0
> [  491.525924] Bluetooth: hci0
> [  491.525927] Bluetooth: hci0
> [  491.525964] Bluetooth: hci0
> [  491.526114] Bluetooth: hci0 urb ffff8800c1f320c0 status 0 count 3
> 
> When I kill bluemoon, I get same kind of issue (cmd timeout):
> [  895.603661] Bluetooth: hci0 urb ffff8802f89d5b40 status 0 count 3
> [  897.606323] Bluetooth: hci0 command 0xfc3f tx timeout
> [  897.606350] Bluetooth: hci0
> [  897.607011] Bluetooth: hci0 urb ffff88030c2c83c0 status 0 count 244
> [  899.612007] Bluetooth: hci0 command 0x0c52 tx timeout
> 
> After that, device still usable by other sockets (hciconfig, hcitool...)
> 
> I wonder if you reproduce this issue on your side?

can you git bisect this to pin point the patch that broke this for you.

Regards

Marcel