linux-kernel - Re: [REGRESSION] Wi-Fi broken on Apple MacBook Pro with BCM4364 Chip starting from kernel 6.13

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Message-ID: <06B76E82-BA57-4195-87E5-B0935BDD4EF6@live.com>
Date: Mon, 20 Jan 2025 16:56:29 +0000
From: Aditya Garg <gargaditya08@...e.com>
To: Arend van Spriel <arend.vanspriel@...adcom.com>, "kvalo@...nel.org"
	<kvalo@...nel.org>, Hector Martin <marcan@...can.st>, "j@...nau.net"
	<j@...nau.net>
CC: "linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org>, Orlando
 Chamberlain <orlandoch.dev@...il.com>, "brcm80211@...ts.linux.dev"
	<brcm80211@...ts.linux.dev>, "brcm80211-dev-list.pdl@...adcom.com"
	<brcm80211-dev-list.pdl@...adcom.com>, "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>
Subject: Re: [REGRESSION] Wi-Fi broken on Apple MacBook Pro with BCM4364 Chip
 starting from kernel 6.13

So it turned out the changes in the following commit broke wifi only on T2 Macs with BCM4364 and BCM4355 chips.

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/drivers/net/wireless/broadcom/brcm80211/brcmfmac?h=v6.13&id=ea11a89c3ac64ada9d8b7f7de279cb6385ed194f

I’ve sent a patch with the fix here:

https://lore.kernel.org/linux-wireless/47E43F07-E11D-478C-86D4-23627154AC7C@live.com/T/#u



> On 20 Jan 2025, at 5:26 PM, Aditya Garg <gargaditya08@...e.com> wrote:
> 
> Starting from kernel 6.13, the wifi adapter is no longer recognised on kernel 6.13. Judging from the logs, it seems that the firmware is no longer being recognised.
> 
> Some logs that might be useful:
> 
> Kernel config:
> 
> https://gist.githubusercontent.com/AdityaGarg8/4ade19da205266a2a8042fbfc078f75e/raw/bb4aa010daa8cff03e4a2202a8f23480cf168b77/config-6.13.0-1-t2-noble
> 
> journalctl -k :
> 
> https://gist.githubusercontent.com/AdityaGarg8/4ade19da205266a2a8042fbfc078f75e/raw/bb4aa010daa8cff03e4a2202a8f23480cf168b77/journalctl
> 
> ls /lib/firmware/brcm:
> 
> https://gist.githubusercontent.com/AdityaGarg8/4ade19da205266a2a8042fbfc078f75e/raw/bb4aa010daa8cff03e4a2202a8f23480cf168b77/firmware
> 
> 
> I assume the Asahi Linux folks also have the issue.
> 
> Let me know if some other information is needed
> 
> Thanks
> Aditya