linux-kernel - Flood of "Unexpected continuation frame (len 0)" messages

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Message-ID: <e92ecd6b-ce05-41fc-8c8a-588edef551ca@gmail.com>
Date: Thu, 30 May 2024 14:49:49 -0700
From: Florian Fainelli <f.fainelli@...il.com>
To: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
 linux-bluetooth@...r.kernel.org,
 Luiz Augusto von Dentz <luiz.dentz@...il.com>,
 Johan Hedberg <johan.hedberg@...il.com>,
 Marcel Holtmann <marcel@...tmann.org>
Subject: Flood of "Unexpected continuation frame (len 0)" messages

Hiya,

My Sony MDR-ZX770BN headset connected to an USB Bluetooth adapter with 
the following characteristics:

         ID 0a5c:4500 Broadcom Corp. BCM2046B1 USB 2.0 Hub (part of 
BCM2046 Bluetooth)
         |__ Port 1: Dev 10, If 0, Class=Wireless, Driver=btusb, 12M
             ID 0a5c:2111 Broadcom Corp. ANYCOM Blue USB-UHE 200/250
         |__ Port 1: Dev 10, If 1, Class=Wireless, Driver=btusb, 12M
             ID 0a5c:2111 Broadcom Corp. ANYCOM Blue USB-UHE 200/250
         |__ Port 1: Dev 10, If 2, Class=Vendor Specific Class, Driver=, 12M
             ID 0a5c:2111 Broadcom Corp. ANYCOM Blue USB-UHE 200/250
         |__ Port 1: Dev 10, If 3, Class=Application Specific Interface, 
Driver=, 12M
             ID 0a5c:2111 Broadcom Corp. ANYCOM Blue USB-UHE 200/250

keeps flooding my kernel log with:

[2413092.567730] Bluetooth: Unexpected continuation frame (len 0)

Is there a quirk that should be set for this adapter? Audio playback 
over Bluetooth A2DP works just fine.

Thanks!
-- 
Florian