linux-kernel - Re: [V4.1] Regression: Bluetooth mouse not working.

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Message-Id: <38429B86-0E46-4C6A-9954-3260D864B10C@holtmann.org>
Date:	Fri, 17 Apr 2015 10:02:50 -0700
From:	Marcel Holtmann <marcel@...tmann.org>
To:	Jörg Otte <jrg.otte@...il.com>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	"Gustavo F. Padovan" <gustavo@...ovan.org>,
	Johan Hedberg <johan.hedberg@...il.com>,
	"bluez mailin list (linux-bluetooth@...r.kernel.org)" 
	<linux-bluetooth@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [V4.1] Regression: Bluetooth mouse not working.

Hi Joerg,

>>>>> On Fri, Apr 17, 2015 at 5:36 AM, Jörg Otte <jrg.otte@...il.com> wrote:
>>>>>> The BT mouse is "death" in v4.1.
>>>>>> The BT mouse has been working in 4.0 and previous kernels, so this
>>>>>> is a regression.
>>>>> 
>>>>> Any chance of bisecting it?
>>>>> 
>>>>>             Linus
>>>> I will try that.
>>>> 
>>>> Thanks, Jörg
>>> 
>>> I first tried to bisect over all. But than I got an unbootable kernel.
>>> Then I did a bisect over net/bluetooth and I get the following fist bad
>>> commit:
>>> 
>>> 5f5da99f1da5b01c7c45473a500c7dbb77a00958 is the first bad commit
>>> commit 5f5da99f1da5b01c7c45473a500c7dbb77a00958
>>> Author: Marcel Holtmann <marcel@...tmann.org>
>>> Date:   Wed Apr 1 13:51:53 2015 -0700
>>> 
>>>   Bluetooth: Restrict HIDP flags to only valid ones
>>> 
>>>   The HIDP flags should be clearly restricted to valid ones. So this puts
>>>   extra checks in place to ensure this.
>>> 
>>>   Signed-off-by: Marcel Holtmann <marcel@...tmann.org>
>>>   Signed-off-by: Johan Hedberg <johan.hedberg@...el.com>
>>> 
>>> :040000 040000 b51ac3634c9d44f4d9df0e7f548b524954b99c76
>>> 63bfb47283609849f1b3b8f05fe61743ccddfee6 M      net
>> 
>> thanks for bi-secting this. I looked at our existing userspace and restricted it to the flags that are currently in use. However it seems that I made a mistake. What version of BlueZ userspace are you using (bluetoothd --version).
>> 
>> 
> bluetoothd --version
> 4.98

okay. I only looked at BlueZ 5.x and that might have been my mistake. Let me check this and fix this properly.

Regards

Marcel

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