From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 128433DF00F for ; Fri, 15 May 2026 07:01:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778828497; cv=none; b=Focr+lMD9Omw/VMkMm6l41oBuFZRyubx1Q9MFN4pVB3Qrovz4Ap7wJMMRRrHTirZsi6qK2aPDRYFieNNovxMPvouC9o480Wxtgm+2YCTUA+Oqti5LmftVG7L1jYuOzZ90/Ky8fBOatt5Sn6Vu9nm0L6+9XsPAD+FM9IL9xgV9zk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778828497; c=relaxed/simple; bh=C2NNfWrL+p5YS1e4wbllvrK+9AEJBlDuRbnQwlB3BIU=; h=From:To:Subject:Date:Message-ID:Content-Type:MIME-Version; b=qKxZEPQ7sopjfPA0jWdXqa3ab2Y9QEDAstqGunY1FWNhJJo608uVWqvMOUR2V0Se5Xf43RfX45BF46U0iP2rCZ/iphjyQxBB3xp+XOfB9tmRPP7fec9mnzww6A4aA5behYkgbEQ2bL428jl/nmZh6LeMHNP8a9T1v5Snw/lJ8DI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=uCbZ372w; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="uCbZ372w" Received: by smtp.kernel.org (Postfix) with ESMTPS id 74558C2BCB0 for ; Fri, 15 May 2026 07:01:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1778828496; bh=C2NNfWrL+p5YS1e4wbllvrK+9AEJBlDuRbnQwlB3BIU=; h=From:To:Subject:Date:From; b=uCbZ372wxA4sxTd1q0pb7aJhrSvmyG99l0fE2hiYdbrvcYZjSftfPEu82H6I53KvM 8/1dp+q4O6cMqu8plwLUkbV6MBk/MbsWsapPo/CY7TD8NUf2G9l6ktl4DHxew4o0a8 Rt0AX6P9FEwA0d3Go/nUZdaofqOimk/dMllRlcmtBBiKUN9LyUrW+NKdjZ0XvkqTUS ElZf/9/bO2gJb0rAbKgd2US95XhX7uWyTPWIyqhTQwwzGRYg9CI/hRpjfk5HjSVdsk bOdg/vtEG1O4O9UMG4HioV14qvjQ042pJHmLyu7pjU/FkdeEKStQ7rUUHocmFVS0+M nQ8BAYI8EBszw== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id 61823C4160E; Fri, 15 May 2026 07:01:36 +0000 (UTC) From: bugzilla-daemon@kernel.org To: linux-bluetooth@vger.kernel.org Subject: [Bug 221521] New: Bluetooth: btusb/mt7921 - Failed to send wmt func ctrl (-22) on MediaTek MT7921 combo adapter Date: Fri, 15 May 2026 07:01:36 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Drivers X-Bugzilla-Component: Bluetooth X-Bugzilla-Version: 2.5 X-Bugzilla-Keywords: X-Bugzilla-Severity: blocking X-Bugzilla-Who: txxlc@pm.me X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: linux-bluetooth@vger.kernel.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version rep_platform op_sys bug_status bug_severity priority component assigned_to reporter cf_regression Message-ID: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugzilla.kernel.org/ Auto-Submitted: auto-generated Precedence: bulk X-Mailing-List: linux-bluetooth@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 https://bugzilla.kernel.org/show_bug.cgi?id=3D221521 Bug ID: 221521 Summary: Bluetooth: btusb/mt7921 - Failed to send wmt func ctrl (-22) on MediaTek MT7921 combo adapter Product: Drivers Version: 2.5 Hardware: All OS: Linux Status: NEW Severity: blocking Priority: P3 Component: Bluetooth Assignee: linux-bluetooth@vger.kernel.org Reporter: txxlc@pm.me Regression: No On kernel 7.0.7, the Bluetooth portion of the MediaTek MT7921 PCIe combo adapter fails to initialize. The btusb driver detects the device (hci0), but initialization aborts with: Bluetooth: hci0: Failed to send wmt func ctrl (-22) As a result, bluetoothd starts successfully but reports no available controllers. bluetoothctl list returns empty, and GUI managers (blueman, bluedevil) cannot enable the adapter. RFKill shows no software/hardware blo= cks. The Wi-Fi portion (mt7921e) initializes and works correctly. Steps to Reproduce 1. Boot system with kernel 7.0.7 2. Check dmesg | grep -iE 'bluetooth|btusb|mt7921' 3. Run bluetoothctl list 4. Observe Failed to send wmt func ctrl (-22) in kernel log and No defa= ult controller available in BlueZ Relevant logs: % sudo dmesg | grep -A2 -B2 'wmt func ctrl' [ 6.063435] input: HD-Audio Generic Mic as /devices/pci0000:00/0000:00:08.1/0000:04:00.6/sound/card1/input16 [ 6.063488] input: HD-Audio Generic Headphone as /devices/pci0000:00/0000:00:08.1/0000:04:00.6/sound/card1/input17 [ 6.078123] Bluetooth: hci0: Failed to send wmt func ctrl (-22) [ 6.078129] Bluetooth: hci0: HCI Enhanced Setup Synchronous Connection command is advertised, but not supported. [ 6.133913] mt7921e 0000:03:00.0: HW/SW Version: 0x8a108a10, Build Time: 20260224110909a --=20 You may reply to this email to add a comment. You are receiving this mail because: You are the assignee for the bug.=