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[129.46.96.20]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-30c7c4ca240sm14345291eec.4.2026.06.25.22.19.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 25 Jun 2026 22:19:55 -0700 (PDT) From: Zijun Hu Date: Thu, 25 Jun 2026 22:19:51 -0700 Subject: [PATCH v2 06/12] Bluetooth: hci_sync: Introduce __hci_reset_sync() for device drivers 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: <20260625-bt_bugfix-v2-6-93396a6f7d5e@oss.qualcomm.com> References: <20260625-bt_bugfix-v2-0-93396a6f7d5e@oss.qualcomm.com> In-Reply-To: <20260625-bt_bugfix-v2-0-93396a6f7d5e@oss.qualcomm.com> To: Marcel Holtmann , Luiz Augusto von Dentz , Rocky Liao , Bartosz Golaszewski , Ben Young Tae Kim , Balakrishna Godavarthi , Matthias Kaehlcke , Tim Jiang Cc: Zijun Hu , linux-bluetooth@vger.kernel.org, linux-kernel@vger.kernel.org, Luiz Augusto von Dentz , linux-arm-msm@vger.kernel.org, Zijun Hu X-Mailer: b4 0.14.3 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNjI2MDA0MCBTYWx0ZWRfXzbbXj1zyns5x 8oQbDS2OtpQRYvOKNX1w4kUUoVEjrqV7ftezdJTUXb3mGfJ6nCaFSiS1oiakLUNxpc7Xcg690Om YOv7AGkrb7q7QV2/FOGkXItv9M3nL12URV0BWccPK+tm3VVmcNNFfKxWFnJOoJr7YVEKPojJO5s vcS0FExQJEnLDdUcl9pZdw0lFNKg0W5pgzhHvJGGDnOIq55gZkAWrZbT08CR5pZlwSTN03F5JqV VHhWJUrhKsWKv2tuAP5akG27iuguNazylI8nDzw2DnJ6LU0lJt2u6m+o4AIUGQu1yiuvqWBxq7H ZFpWWzyGccOEGSPhvUlxZBq0N3a1CGzEF9XpcO01ZNFO0GzjrYjzPvcYab6ShQdC86O96OUvtqp rEoS+OtSvb5Mx4Bwg+zau51xUmTB5w86ooaSmY8WCw2xqdhkps0ilwfuajkk9TAXUBctnC7yqil XaQNvhLdoRBUcsbvouA== X-Proofpoint-ORIG-GUID: LJNEJYnKcqyAgO473FjWMGS2Vd4gR6yh X-Proofpoint-Spam-Info: AW1haW4tMjYwNjI2MDA0MCBTYWx0ZWRfX6L0/kERS+XZ2 YUcJMnE3oncmGVdgaI0CfwxJjpzd1w5k6Tjq5/UdBDazCGYv6yxsVmqd38fNkr1TxBsw/AJiwp4 uUN9957dgvg0wu9liR1FKgeMVJ8Dn9c= X-Proofpoint-GUID: LJNEJYnKcqyAgO473FjWMGS2Vd4gR6yh X-Authority-Analysis: v=2.4 cv=MLpQXsZl c=1 sm=1 tr=0 ts=6a3e0bfd cx=c_pps a=PfFC4Oe2JQzmKTvty2cRDw==:117 a=ouPCqIW2jiPt+lZRy3xVPw==:17 a=IkcTkHD0fZMA:10 a=FelO9ux0wxsA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=ZpdpYltYx_vBUK5n70dp:22 a=EUspDBNiAAAA:8 a=kQ_UBjYZPz6FNnKCBYIA:9 a=QEXdDO2ut3YA:10 a=6Ab_bkdmUrQuMsNx7PHu:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.125,FMLib:17.12.100.49 definitions=2026-06-26_01,2026-06-24_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 impostorscore=0 spamscore=0 clxscore=1015 suspectscore=0 bulkscore=0 lowpriorityscore=0 malwarescore=0 priorityscore=1501 adultscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2606260040 Several vendor drivers have a requirement to send a synchronous raw HCI reset with HCI_INIT_TIMEOUT. Add a dedicated __hci_reset_sync() for them to use. Signed-off-by: Zijun Hu --- include/net/bluetooth/hci_sync.h | 1 + net/bluetooth/hci_sync.c | 8 ++++++++ 2 files changed, 9 insertions(+) diff --git a/include/net/bluetooth/hci_sync.h b/include/net/bluetooth/hci_sync.h index 73e494b2591d..7005fc9f257a 100644 --- a/include/net/bluetooth/hci_sync.h +++ b/include/net/bluetooth/hci_sync.h @@ -59,6 +59,7 @@ int __hci_cmd_sync_status(struct hci_dev *hdev, u16 opcode, u32 plen, int __hci_cmd_sync_status_sk(struct hci_dev *hdev, u16 opcode, u32 plen, const void *param, u8 event, u32 timeout, struct sock *sk); +int __hci_reset_sync(struct hci_dev *hdev); int hci_cmd_sync_status(struct hci_dev *hdev, u16 opcode, u32 plen, const void *param, u32 timeout); diff --git a/net/bluetooth/hci_sync.c b/net/bluetooth/hci_sync.c index 3be8c3581c6c..ca1ee6c89739 100644 --- a/net/bluetooth/hci_sync.c +++ b/net/bluetooth/hci_sync.c @@ -3684,6 +3684,14 @@ int hci_reset_sync(struct hci_dev *hdev) return 0; } +/* Send a raw HCI reset for use by vendor drivers */ +int __hci_reset_sync(struct hci_dev *hdev) +{ + return __hci_cmd_sync_status(hdev, HCI_OP_RESET, 0, NULL, + HCI_INIT_TIMEOUT); +} +EXPORT_SYMBOL(__hci_reset_sync); + static int hci_init0_sync(struct hci_dev *hdev) { int err; -- 2.34.1