From nobody Fri Dec 19 09:45:05 2025 Received: from mailgw02.mediatek.com (unknown [210.61.82.184]) (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 F25C930F815; Tue, 9 Dec 2025 12:06:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=210.61.82.184 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765281979; cv=none; b=kAxTdNUpIX7nSiEYa5/JinFktwvoVV8MoG4NzLrVyCY/V4JU2pG/JbdFSkX5WfeEI5HY0lhLCByorw3odYKN7It1GCoAlSLZSfYHcIQ4dMVC1orZsdZuxwJ+N7I3alJXQEsY5VW1NavWzGvuQd4LSLa9TtV5fQtHRrus70jI3kA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765281979; c=relaxed/simple; bh=V8ZbFNitZxZ0q6LoUIU6sh5wINJxFzeJhsg5BYpoR1w=; h=From:To:CC:Subject:Date:Message-ID:MIME-Version:Content-Type; b=dW4QyaB6zms0v8BOQg6dr6RZ0irBDmOP0DQSWC9jDzCIrw3txbZ1YzELDBJijXtV6UkllREn0aCByMcFWaXhWgmNrMu+fCnpVNx3ypKSlZRDdhAaLreW/o5aKoaA6+hwLiM7+bXvS9EtmfvW9BOJ0NDcoCCboxXfhs/qxK/3VLg= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=mediatek.com; spf=pass smtp.mailfrom=mediatek.com; dkim=pass (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b=DGAdVkpe; arc=none smtp.client-ip=210.61.82.184 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=mediatek.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=mediatek.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b="DGAdVkpe" X-UUID: 6f05039cd4f711f0b33aeb1e7f16c2b6-20251209 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=biSx7WZ/dzqIzHa74Ww6F9siP+61NLhUlnmYjDzhZbE=; b=DGAdVkpeTpPLxliFZwMmRsNKZF0YRw3Y6g52gkDVEZtxMhpKVMRcnceuZGvuE8N/mfhGSQ9jm6ovZ+qGAYnAPeCrhVI0bb709GhZWHMsSe9ayqqwbWSUbu28oL1tQRIYmcylJHdqw3jWJgBrUdQ9JVaGuIgIQ11VBCrVHcUhTN4=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.3.6,REQID:335daf81-1d4c-4606-ab40-4f18d303d5d0,IP:0,UR L:0,TC:0,Content:0,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTION:r elease,TS:0 X-CID-META: VersionHash:a9d874c,CLOUDID:0547ffa9-6421-45b1-b8b8-e73e3dc9a90f,B ulkID:nil,BulkQuantity:0,Recheck:0,SF:102|836|888|898,TC:-5,Content:0|15|5 0,EDM:-3,IP:nil,URL:0,File:130,RT:0,Bulk:nil,QS:nil,BEC:nil,COL:0,OSI:0,OS A: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: 6f05039cd4f711f0b33aeb1e7f16c2b6-20251209 Received: from mtkmbs10n2.mediatek.inc [(172.21.101.183)] by mailgw02.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 69700997; Tue, 09 Dec 2025 20:06:03 +0800 Received: from mtkmbs13n2.mediatek.inc (172.21.101.108) by mtkmbs11n1.mediatek.inc (172.21.101.185) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1748.26; Tue, 9 Dec 2025 20:06:02 +0800 Received: from mtksitap99.mediatek.inc (10.233.130.16) by mtkmbs13n2.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.1748.26 via Frontend Transport; Tue, 9 Dec 2025 20:06:02 +0800 From: Chris Lu To: Marcel Holtmann , Johan Hedberg , Luiz Von Dentz CC: Sean Wang , Will Lee , SS Wu , Steve Lee , linux-bluetooth , linux-kernel , linux-mediatek , Chris Lu Subject: [PATCH v1] Bluetooth: btmtk: Trigger reset on firmware download failure Date: Tue, 9 Dec 2025 20:05:59 +0800 Message-ID: <20251209120559.2991698-1-chris.lu@mediatek.com> X-Mailer: git-send-email 2.45.2 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Initiate reset flow if MT79xx series BT failed to download firmware when doing setup. If driver is not able to get event after reset in the first section of btmtk_usb_setup, the protocol is deemed unuable and driver will return to prevent from repeatedly executing resets. Signed-off-by: Chris Lu --- drivers/bluetooth/btmtk.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/drivers/bluetooth/btmtk.c b/drivers/bluetooth/btmtk.c index a8c520dc09e1..8b1443b9e9cf 100644 --- a/drivers/bluetooth/btmtk.c +++ b/drivers/bluetooth/btmtk.c @@ -1333,7 +1333,7 @@ int btmtk_usb_setup(struct hci_dev *hdev) btmtk_usb_hci_wmt_sync); if (err < 0) { bt_dev_err(hdev, "Failed to set up firmware (%d)", err); - return err; + goto reset_fw; } =20 /* It's Device EndPoint Reset Option Register */ @@ -1353,7 +1353,7 @@ int btmtk_usb_setup(struct hci_dev *hdev) err =3D btmtk_usb_hci_wmt_sync(hdev, &wmt_params); if (err < 0) { bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err); - return err; + goto reset_fw; } =20 hci_set_msft_opcode(hdev, 0xFD30); @@ -1444,6 +1444,13 @@ int btmtk_usb_setup(struct hci_dev *hdev) } kfree_skb(skb); =20 +reset_fw: + if (btmtk_data->reset_sync) { + bt_dev_err(hdev, "Mediatek do firmware reset"); + btmtk_reset_sync(hdev); + return err; + } + done: rettime =3D ktime_get(); delta =3D ktime_sub(rettime, calltime); --=20 2.45.2