linux-kernel - [PATCH] fix 5.15 init regression for Intel Bluetooth

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Message-ID: <b0f6f66b-28aa-9d43-0aab-e6887ee0fda8@logobject.ch>
Date:   Mon, 27 Dec 2021 11:26:59 +0100
From:   Ortwin Glück <ortwin.glueck@...object.ch>
To:     linux-kernel@...r.kernel.org
Cc:     linux-bluetooth@...r.kernel.org,
        Marcel Holtmann <marcel@...tmann.org>,
        Johan Hedberg <johan.hedberg@...il.com>,
        Luiz Augusto von Dentz <luiz.dentz@...il.com>
Subject: [PATCH] fix 5.15 init regression for Intel Bluetooth


Hi

On all 5.15 kernels the Intel Bluetooth no longer works. All was fine in 5.14.
Apparently the quirk is needed for this device.

vanilla 5.15.5:
    Bluetooth: hci0: Reading Intel version command failed (-110)
    Bluetooth: hci0: command tx timeout

with patch:
    Bluetooth: hci0: Legacy ROM 2.5 revision 1.0 build 3 week 17 2014
    Bluetooth: hci0: Intel device is already patched. patch num: 32

Please apply to stable too.

Thanks

Ortwin
View attachment "0001-Bluetooth-btusb-Add-init-quitk.patch" of type "text/x-patch" (1434 bytes)