linux-kernel - Re: [REGRESSION] Bluetooth is not working on Macs with BCM4377 chip starting from kernel 6.5

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Date:   Tue, 14 Nov 2023 06:23:30 +0000
From:   Aditya Garg <gargaditya08@...e.com>
To:     Bagas Sanjaya <bagasdotme@...il.com>
CC:     Hector Martin <marcan@...can.st>, Sven Peter <sven@...npeter.dev>,
        Alyssa Rosenzweig <alyssa@...enzweig.io>,
        Marcel Holtmann <marcel@...tmann.org>,
        Johan Hedberg <johan.hedberg@...il.com>,
        Luiz Augusto von Dentz <luiz.dentz@...il.com>,
        Orlando Chamberlain <orlandoch.dev@...il.com>,
        Kerem Karabay <kekrby@...il.com>,
        Aun-Ali Zaidi <admin@...eit.net>,
        Asahi Linux Mailing List <asahi@...ts.linux.dev>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Bluetooth <linux-bluetooth@...r.kernel.org>
Subject: Re: [REGRESSION] Bluetooth is not working on Macs with BCM4377 chip
 starting from kernel 6.5



> On 14-Nov-2023, at 5:01 AM, Bagas Sanjaya <bagasdotme@...il.com> wrote:
> 
> On Mon, Nov 13, 2023 at 08:57:35PM +0000, Aditya Garg wrote:
>> Starting from kernel 6.5, a regression in the kernel is causing Bluetooth to not work on T2 Macs with BCM4377 chip.
>> 
>> Journalctl of kernel 6.4.8 which has Bluetooth working is given here: https://pastebin.com/u9U3kbFJ
>> 
>> Journalctl of kernel 6.5.2, which has Bluetooth broken is given here: https://pastebin.com/aVHNFMRs
>> 
>> Also, the bug hasn’t been fixed even in 6.6.1, as reported by users.
> 
> Can you bisect this regression please?

Since I don't have access to this hardware, it's not possible for me to bisect this regression. Let's hope someone is able to do so though.