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 0BBAA3CAE66 for ; Sun, 17 May 2026 18:07:28 +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=1779041249; cv=none; b=E4wucz56le87bury7j+aFQTcOEcRPNaTTAS0/XKgEgZxGocngJiWmYPiJEU4SQnnyLr2fTG9qw9yEpUX5h4CpLQD0+VKTKghGg4TvY4SRFLCpW4X9e2O6nxU7x/HlHihISOgjR/lWLcrQI48qMPat7AnJBxKwscDOwS6ua3zAtI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779041249; c=relaxed/simple; bh=7LoqH8yLo6eIGMNybQaVKiPHLTdBaGi9j7TiVXz5T4o=; h=From:To:Subject:Date:Message-ID:Content-Type:MIME-Version; b=PLqnyYxgz4fB4tYVBRhzYy5fcwMH9j4T3EN8dHNPfDDVLpK1rZtbya2tNYmWv84F1ZxkBZa+XLMiTxg7ywFK4I+jIOLpHnWCC56jA6sUMWTuVu8kZa7C+81GvUx36eZM0kqCH4Mf3xG+kTHH6Lu7LtClKUfka/Eqfer68LD/N44= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=epayASHZ; 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="epayASHZ" Received: by smtp.kernel.org (Postfix) with ESMTPS id AA19EC2BCB0 for ; Sun, 17 May 2026 18:07:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1779041248; bh=7LoqH8yLo6eIGMNybQaVKiPHLTdBaGi9j7TiVXz5T4o=; h=From:To:Subject:Date:From; b=epayASHZcS9rA92xK1FYTtLuPoH4fLvww5LpzPMlyzqJRoSt3dG6FZtLEf97JxeW8 HKuD/tRaIYzzWOVJ5XB4Iod+xUsLR6XQBUsRxGjLKZt6t99SSLA/D0EvrRPH7XI7vo 0Qx3wQDHXtWH1a8DxMyjuDQ7rZ2QsHKhwINAXxOUxgiLbJ5HN6vJgHVsfq2wnSQDIU iSzO/Bd95G4NSiEuNekv5QwZoiS17jbOQm5mDAbeH9i/A/PMah6oqPqIjB0uoJDw37 +AO+P3DaWMVVoAPgFYqaYmek2EyY1sHMGHnibfmTeAxjWpaEAlREGjyd6elsACsehn 7R4QqfEfhxxtA== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id 9571EC433E1; Sun, 17 May 2026 18:07:28 +0000 (UTC) From: bugzilla-daemon@kernel.org To: linux-bluetooth@vger.kernel.org Subject: =?UTF-8?B?W0J1ZyAyMjE1MzldIE5ldzogTVQ3OTI1IEJsdWV0b290aCBmYWls?= =?UTF-8?B?cyB0byBpbml0aWFsaXplIHNpbmNlIGtlcm5lbCA3LjAuOCDigJQgcmVncmVz?= =?UTF-8?B?c2lvbiBmcm9tIDcuMC41?= Date: Sun, 17 May 2026 18:07:28 +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: normal X-Bugzilla-Who: sphinx-rift-sector@duck.com 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=3D221539 Bug ID: 221539 Summary: MT7925 Bluetooth fails to initialize since kernel 7.0.8 =E2=80=94 regression from 7.0.5 Product: Drivers Version: 2.5 Hardware: All OS: Linux Status: NEW Severity: normal Priority: P3 Component: Bluetooth Assignee: linux-bluetooth@vger.kernel.org Reporter: sphinx-rift-sector@duck.com Regression: No **Hardware:** - Framework Laptop 13 (AMD AI 300 series) - WiFi/BT chip: MediaTek MT7925 (RZ717) - PCIe ID: MEDIATEK Corp. MT7925 (RZ717) Wi-Fi 7 160MHz - BT interface: USB (hci0) **Working kernel:** 7.0.5 **Broken kernel:** 7.0.8 **Firmware:** linux-firmware 20260410 (mediatek/mt7925/BT_RAM_CODE_MT7925_1_1_hdr.bin) **Distro:** NixOS 26.05 (unstable) **Description:** Bluetooth on the MediaTek MT7925 stopped working after upgrading the kernel from 7.0.5 to 7.0.8. WiFi continues to work via the mt7925e PCIe driver. Th= e BT USB device enumerates and hci0 is created, but the WMT firmware handshake f= ails with EINVAL (-22). The adapter cannot be brought up. This is a regression: the same firmware and hardware work on kernel 7.0.5. **Symptoms:** - `hciconfig hci0` shows BD Address: 00:00:00:00:00:00, state DOWN - `hciconfig hci0 up` returns: "Can't init device hci0: Invalid argument (2= 2)" - `modprobe -r btusb && modprobe btusb` does not resolve the issue - Rebooting does not resolve the issue - rfkill shows hci0 not blocked (soft or hard) **dmesg (relevant lines):** ``` Bluetooth: Core ver 2.22 Bluetooth: HCI device and connection manager initialized Bluetooth: HCI socket layer initialized Bluetooth: L2CAP socket layer initialized Bluetooth: SCO socket layer initialized usbcore: registered new interface driver btusb Bluetooth: hci0: HW/SW Version: 0x00000000, Build Time: 20260106153314 Bluetooth: hci0: Failed to send wmt func ctrl (-22) Bluetooth: hci0: HCI Enhanced Setup Synchronous Connection command is advertised, but not supported. mt7925e 0000:c0:00.0: WM Firmware Version: ____000000, Build Time: 20260106153120 ``` Note: `HW/SW Version: 0x00000000` indicates the chip is not responding to version queries during the WMT protocol handshake. **Steps to reproduce:** 1. Boot a system with MediaTek MT7925 on kernel 7.0.8 2. Check `hciconfig hci0` =E2=80=94 adapter is DOWN with null BD address 3. Attempt `hciconfig hci0 up` =E2=80=94 fails with EINVAL 4. Downgrade to kernel 7.0.5 =E2=80=94 Bluetooth works **Related:** - Bug 219sp688 reports MT7925 BT initialization failures on kernels 6.12=E2= =80=936.15, but with USB enumeration timeouts (-110). This bug is different: USB enumeration succeeds, but the WMT func ctrl command fails (-22). --=20 You may reply to this email to add a comment. You are receiving this mail because: You are the assignee for the bug.=