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

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Message-Id: <300602D8-9DB7-4F8D-AC97-B60924554093@holtmann.org>
Date:	Fri, 17 Apr 2015 09:51:52 -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).

Regards

Marcel

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