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[129.46.96.20]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-314bc419c52sm7823000eec.10.2026.07.25.01.54.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 25 Jul 2026 01:54:56 -0700 (PDT) From: Zijun Hu Date: Sat, 25 Jul 2026 01:54:43 -0700 Subject: [PATCH 05/11] Bluetooth: btusb: Add a simple static btusb_prepare_reset() Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260725-generic_fix-v1-5-305aec261a19@oss.qualcomm.com> References: <20260725-generic_fix-v1-0-305aec261a19@oss.qualcomm.com> In-Reply-To: <20260725-generic_fix-v1-0-305aec261a19@oss.qualcomm.com> To: Marcel Holtmann , Luiz Augusto von Dentz , Abhishek Pandit-Subedi , Chethan Tumkur Narayan , Manish Mandlik Cc: Zijun Hu , Luiz Augusto von Dentz , linux-bluetooth@vger.kernel.org, linux-kernel@vger.kernel.org, Zijun Hu X-Mailer: b4 0.15.2 X-Proofpoint-ORIG-GUID: 1uJMRQg_8_2m1gWxLo6EpLZ2HqoSPHnF X-Authority-Analysis: v=2.4 cv=A8Bc+aWG c=1 sm=1 tr=0 ts=6a6479e1 cx=c_pps a=JL+w9abYAAE89/QcEU+0QA==:117 a=ouPCqIW2jiPt+lZRy3xVPw==:17 a=IkcTkHD0fZMA:10 a=RAioF0-LDSMA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=DJpcGTmdVt4CTyJn9g5Z:22 a=VwQbUJbxAAAA:8 a=EUspDBNiAAAA:8 a=6PToxbElcrdsU22FfsIA:9 a=QEXdDO2ut3YA:10 a=324X-CrmTo6CU4MGRt3R:22 X-Proofpoint-GUID: 1uJMRQg_8_2m1gWxLo6EpLZ2HqoSPHnF X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzI1MDA4MyBTYWx0ZWRfX6RSyPVe3vzdi yGa6edgHFAni/jUnPIRWihdxa9YRmZ/btBb11U7hrPuQtaEehvFGdg1UTe1ce6Es/MMLcWKyReq 32tN+mlNjAbxy4GtEGlJJkYlhv6MRkQXbLh4K02SOlYfy0D/pCnYcRKApAa3uczSOSfeTDm05ZI p1S8x1tt7fj/M3zqIYhdbRfv2JyZpzX25ITPwM3kwF4z8aYRhi7UFB1V3iw3348qqXjnV1YJmws eBE9orAqlFof6aU0FsLPJgOiOnq/zs4xl0eXKHp16jiw96+sWnVgFxQCYVvEHQmnGRUdSQkr4J8 keQN3yAwATMVlz+5pAmxqPaaeT59u8nL1nGkTCirGJoVXqgK+ozTHxvsl9lFHuIBcdbr3klvKQT CFOtMxANEsrykCFxJXUTKfp/I7XpT4yLBABmKNF+dmMwv8qAbTEBC+Q7ct6sRRx9vDFx+oTC/Z/ w2jO7BI569BMsuiiWew== X-Proofpoint-Spam-Info: AW1haW4tMjYwNzI1MDA4MyBTYWx0ZWRfX1s5VSiv0g8LI SQVsUIKOjVq5cDBThDLhLl1ctzuuf7nm8O9fI/bdiMpQaR3eM8Z/vyBjBQEQ28qg+yBJ/yv/aVo 2TrXRpTBzLOPiN3Y5uGdOpWCkdkNrYw= X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-07-25_02,2026-07-24_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 suspectscore=0 bulkscore=0 malwarescore=0 priorityscore=1501 impostorscore=0 adultscore=0 lowpriorityscore=0 spamscore=0 clxscore=1015 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2607250083 Add btusb_prepare_reset() to do cleanup before a reset, and apply it to btusb_mtk_reset() as well. Signed-off-by: Zijun Hu --- Previous version: https://lore.kernel.org/all/20260713-btusb_prep_qcc2072-v2-5-bbcb651285f2@oss.qualcomm.com Changes since previous version: - Improve commit title and message. --- drivers/bluetooth/btusb.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index 2ea1d6bbea39..90336dec59a2 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -2069,16 +2069,24 @@ static void btusb_stop_traffic(struct btusb_data *data) { usb_kill_anchored_urbs(&data->intr_anchor); usb_kill_anchored_urbs(&data->bulk_anchor); usb_kill_anchored_urbs(&data->isoc_anchor); usb_kill_anchored_urbs(&data->diag_anchor); usb_kill_anchored_urbs(&data->ctrl_anchor); } +static void btusb_prepare_reset(struct hci_dev *hdev) +{ + struct btusb_data *data = hci_get_drvdata(hdev); + + btusb_stop_traffic(data); + usb_kill_anchored_urbs(&data->tx_anchor); +} + static int btusb_close(struct hci_dev *hdev) { struct btusb_data *data = hci_get_drvdata(hdev); int err; BT_DBG("%s", hdev->name); cancel_delayed_work(&data->rx_work); @@ -2913,18 +2921,17 @@ static int btusb_mtk_reset(struct hci_dev *hdev, void *rst_data) err = usb_autopm_get_interface(data->intf); if (err < 0) return err; /* Release MediaTek ISO data interface */ btusb_mtk_release_iso_intf(hdev); - btusb_stop_traffic(data); - usb_kill_anchored_urbs(&data->tx_anchor); + btusb_prepare_reset(hdev); /* Toggle the hard reset line. The MediaTek device is going to * yank itself off the USB and then replug. The cleanup is handled * correctly on the way out (standard USB disconnect), and the new * device is detected cleanly and bound to the driver again like * it should be. */ if (data->reset_gpio) { -- 2.34.1