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Date:   Thu, 19 Aug 2021 07:44:38 +0200
From:   Greg KH <gregkh@linuxfoundation.org>
To:     Mike <mpagano@gentoo.org>
Cc:     stable@vger.kernel.org, pav@iki.fi
Subject: Re: Bluetooth: btusb: check conditions before enabling USB ALT 3 for
 WBS
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On Wed, Aug 18, 2021 at 07:04:47PM -0400, Mike wrote:
> From: Pauli Virtanen <pav@iki.fi>
> Kernel Version 5.13
> 
> commit 55981d3541812234e687062926ff199c83f79a39 upstream.

There is no such commit in Linus's tree :(


> - new_alts = btusb_find_altsetting(data, 6) ? 6 : 1;
> - /* Because mSBC frames do not need to be aligned to the
> - * SCO packet boundary. If support the Alt 3, use the
> - * Alt 3 for HCI payload >= 60 Bytes let air packet
> - * data satisfy 60 bytes.
> - */
> - if (new_alts == 1 && btusb_find_altsetting(data, 3))
> + if (btusb_find_altsetting(data, 6))
> + new_alts = 6;
> + else if (btusb_find_altsetting(data, 3) &&
> + hdev->sco_mtu >= 72 &&
> + test_bit(BTUSB_USE_ALT3_FOR_WBS, &data->flags))
> new_alts = 3;


Your patch is also corrupted and could not be applied :(