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Date:   Mon, 16 Jan 2023 15:45:24 +0100
From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     mkv22@cantab.net
Cc:     linux-kernel@vger.kernel.org, akpm@linux-foundation.org,
        torvalds@linux-foundation.org, stable@vger.kernel.org
Subject: Re: Mainline stable kernel kbd backlight stops working from 6.1.6 in
 t2 Macs
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On Mon, Jan 16, 2023 at 06:12:12AM +0530, mkv22@cantab.net wrote:
> Apologies that I am unable to attach more detailed information from dmesg
> or logs as the update was in a production laptop and had to be rolled back
> to 6.1.5 immediately and lost the dmesg output.

Any chance to run 'git bisect' to find the offending change?

thanks,

greg k-h