From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 3F508C61DBD for ; Wed, 26 Aug 2026 11:16:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type: Content-Transfer-Encoding:MIME-Version:Message-ID:Date:Subject:CC:To:From: Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender :Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=3w6x5i5cNJ44cvxGIR3mU/+8CUnMl13CMX4jUQ9qkts=; b=xM2dLQ5i7wS42Q4Yk1u304fYfZ jUV5LvrCCxI8niS810ui7tHFJAijLiKgmBfTtkNlqyGJBgjrTTRZiBTxQzHUCN1fLmo7dPo9bqJct oW3svGlooeZEV+ENETFYE4tj6oUAEPOLD33SBxbgeqYOZ44stcv/s96V1v3ycGMbUEeRayxN2Tahf F/H21Jn9TWR3ecd0HJljC6CKW2W6BDyxvu0rMqPn8C2N5PIPZcrTYJlH1CTV9YgN40UTfm2aNrCFm z+/vrhkBsa2yC6RMkJjXywCFYrCJ8swO6n6ZEfQk867UPYx6HO+QwL/NcFfI4OT72E5aVOAX5gAOh Cl5Nbekg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wzBcN-00000002LJ3-3XCt; Wed, 26 Aug 2026 11:16:31 +0000 Received: from mailgw01.mediatek.com ([216.200.240.184]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wzBcL-00000002LIN-3jvU for linux-mediatek@lists.infradead.org; Wed, 26 Aug 2026 11:16:31 +0000 X-UUID: 9115f472a13f11f1afed4741b24580c9-20260826 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Type:Content-Transfer-Encoding:MIME-Version:Message-ID:Date:Subject:CC:To:From; bh=3w6x5i5cNJ44cvxGIR3mU/+8CUnMl13CMX4jUQ9qkts=; b=dOXG+q1S6VSW9uv0SBwdL8CLS2sdRfLJtaJU2MGWcKIk4BV/pN+btf0PuiOWamLN/BGQMiNeCCPFHw1A9efruG594BoQWOW3KmyOMKkJCidiDdVuy5hfKr0+roQ7Sqbt5YSL9WK/iBG/ToKBFxuSj7bqQkdr1skDlEyNcoOj+Uc=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.3.19,REQID:6bba4b7c-b816-465c-b3b7-9889e702903a,IP:0,U RL:0,TC:0,Content:0,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTION: release,TS:0 X-CID-META: VersionHash:7db8b62,CLOUDID:639b34c3-610e-480f-b463-9bb53aa0aeaf,B ulkID:nil,BulkQuantity:0,SF:102|836|865|888|898,TC:-5,Content:0|15|50|99,E DM:-3,IP:nil,URL:0,File:130,RT:0,Bulk:nil,QS:nil,BEC:-1,COL:0,OSI:0,OSA:0, AV:0,LES:1,SPR:NO,DKR:0,DKP:0,BRR:0,BRE:0,ARC:0 X-CID-BVR: 2,SSN|SDN X-CID-BAS: 2,SSN|SDN,0,_ X-CID-FACTOR: TF_CID_SPAM_SNR X-CID-RHF: D41D8CD98F00B204E9800998ECF8427E X-UUID: 9115f472a13f11f1afed4741b24580c9-20260826 Received: from mtkmbs13n1.mediatek.inc [(172.21.101.193)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 1178808139; Wed, 26 Aug 2026 04:16:21 -0700 Received: from mtkmbs11n2.mediatek.inc (172.21.101.187) by mtkmbs13n1.mediatek.inc (172.21.101.193) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.29; Wed, 26 Aug 2026 19:16:18 +0800 Received: from mtksitap99.mediatek.inc (10.233.130.16) by mtkmbs11n2.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.2562.29 via Frontend Transport; Wed, 26 Aug 2026 19:16:18 +0800 From: Chris Lu To: Marcel Holtmann , Johan Hedberg , Luiz Von Dentz CC: Sean Wang , Will Lee , SS Wu , linux-bluetooth , linux-kernel , linux-mediatek , Chris Lu Subject: [PATCH] Bluetooth: btmtk: Route firmware debug event to the diag channel Date: Wed, 26 Aug 2026 19:16:17 +0800 Message-ID: <20260826111617.1175698-1-chris.lu@mediatek.com> X-Mailer: git-send-email 2.45.2 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260826_041629_976843_B291C885 X-CRM114-Status: GOOD ( 11.00 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org MediaTek controllers may emit a firmware debug event on the ACL channel using the reserved handle 0x0efd, which shows up in the ACL header as 0x2efd once the start fragment flag is included. Neither btmtk_usb_recv_acl() nor btmtksdio_recv_acl() recognizes it, so the packet is passed to the HCI core, which has no connection with that handle and complains: Bluetooth: hci0: ACL packet for unknown connection handle 3837 Handle it the same way as the existing firmware debug logging packets and forward it to the diagnostic channel instead. Signed-off-by: Chris Lu --- drivers/bluetooth/btmtk.c | 1 + drivers/bluetooth/btmtksdio.c | 1 + 2 files changed, 2 insertions(+) diff --git a/drivers/bluetooth/btmtk.c b/drivers/bluetooth/btmtk.c index 73ba4a029e9c..8563ab06a99f 100644 --- a/drivers/bluetooth/btmtk.c +++ b/drivers/bluetooth/btmtk.c @@ -1006,6 +1006,7 @@ int btmtk_usb_recv_acl(struct hci_dev *hdev, struct sk_buff *skb) fallthrough; case 0x05ff: /* Firmware debug logging 1 */ case 0x05fe: /* Firmware debug logging 2 */ + case 0x2efd: /* Firmware debug event */ return hci_recv_diag(hdev, skb); } diff --git a/drivers/bluetooth/btmtksdio.c b/drivers/bluetooth/btmtksdio.c index b7f0be7fc42a..cba52724f867 100644 --- a/drivers/bluetooth/btmtksdio.c +++ b/drivers/bluetooth/btmtksdio.c @@ -460,6 +460,7 @@ static int btmtksdio_recv_acl(struct hci_dev *hdev, struct sk_buff *skb) fallthrough; case 0x05ff: case 0x05fe: + case 0x2efd: /* Firmware debug event */ /* Firmware debug logging */ return hci_recv_diag(hdev, skb); } -- 2.45.2