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[129.46.96.20]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-30c1bddfe34sm12025561eec.20.2026.06.22.07.52.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 22 Jun 2026 07:52:23 -0700 (PDT) From: Zijun Hu Date: Mon, 22 Jun 2026 07:52:22 -0700 Subject: [PATCH 09/13] Bluetooth: hci_sync: Add __hci_reset_sync() for device driver Precedence: bulk X-Mailing-List: linux-bluetooth@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: <20260622-bt_bugfix-v1-9-11f936d84e72@oss.qualcomm.com> References: <20260622-bt_bugfix-v1-0-11f936d84e72@oss.qualcomm.com> In-Reply-To: <20260622-bt_bugfix-v1-0-11f936d84e72@oss.qualcomm.com> To: Marcel Holtmann , Luiz Augusto von Dentz , Rocky Liao , Bartosz Golaszewski , Ben Young Tae Kim , Balakrishna Godavarthi , Matthias Kaehlcke 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-GUID: Qz0-jdv64CRY_4T3fsw9tcZz3ZLcFJmS X-Authority-Analysis: v=2.4 cv=EOU2FVZC c=1 sm=1 tr=0 ts=6a394c29 cx=c_pps a=bS7HVuBVfinNPG3f6cIo3Q==:117 a=ouPCqIW2jiPt+lZRy3xVPw==:17 a=IkcTkHD0fZMA:10 a=FelO9ux0wxsA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=yx91gb_oNiZeI1HMLzn7:22 a=EUspDBNiAAAA:8 a=kQ_UBjYZPz6FNnKCBYIA:9 a=QEXdDO2ut3YA:10 a=vBUdepa8ALXHeOFLBtFW:22 X-Proofpoint-Spam-Info: AW1haW4tMjYwNjIyMDE0NyBTYWx0ZWRfXyj5SShpPMuGU Zavbrtk6itpp88KZeG96fEfV9XrvBZwu+zHZRHApf5NkegXmbgQ1rt9O5xBhTbCuhMToftodh5y eVhFt03DuQQ34WS1SbDvy4blbkFuANI= X-Proofpoint-ORIG-GUID: Qz0-jdv64CRY_4T3fsw9tcZz3ZLcFJmS X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNjIyMDE0NyBTYWx0ZWRfX/5BnhYf03+u4 2yur9pyKvHgXMPq8Xq6fFLSGbH1Xh5uvzkcE8vC4Umf+jBgnggV5zogYKdWxwVAVsRpLGXhIM+W CnIhRAsm0RFY6OACSEEYKxbmBaKhbUfMtDCTiY63ETCNhfiFbc7OgqPUd9+21AJUZc0ENrPmux/ J9Jw/8ncESJdvdaK6YDz6iwWQuSfsLglcJo9g4VEGqoHQx/2N4Gdd1GrjPIf4tbh8oHfo+IIx8r 0acvdJr6zLooalOQvQdTjnOJ2CjTw9Uet8x5vDK73/7bHF8v+YLhvEtuenxnPuz6/ddv7n72Vjn UEGB87A71KMeaqxiX6ZEg2tAbpKscRdgdl61eBeSXS30o1lstdx5rJ4flikjXA4txp7eTkZz8Zk tHFoC4TLrWku8ewcJVBICqNGdkxCDLrzPKsngCKjXk40aH3BTNbbSegKxask0TwbbpJNbgImHV5 gWnSdV/EdZwfZIJ7nyA== 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=2026-06-22_02,2026-06-22_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 bulkscore=0 priorityscore=1501 malwarescore=0 adultscore=0 lowpriorityscore=0 phishscore=0 clxscore=1015 spamscore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2606220147 Many vendor drivers have requirements to send a raw HCI reset synchronously with HCI_INIT_TIMEOUT. Add a dedicated API for them to use. Signed-off-by: Zijun Hu --- include/net/bluetooth/hci_sync.h | 1 + net/bluetooth/hci_sync.c | 14 ++++++++++++++ 2 files changed, 15 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 601d44ef975f..40c9725585cb 100644 --- a/net/bluetooth/hci_sync.c +++ b/net/bluetooth/hci_sync.c @@ -3684,6 +3684,20 @@ int hci_reset_sync(struct hci_dev *hdev) return -bt_to_errno(err); } +/* Send a raw HCI reset for use by vendor drivers */ +int __hci_reset_sync(struct hci_dev *hdev) +{ + int err; + + err = __hci_cmd_sync_status(hdev, HCI_OP_RESET, 0, NULL, + HCI_INIT_TIMEOUT); + if (err < 0) + return err; + + return -bt_to_errno(err); +} +EXPORT_SYMBOL(__hci_reset_sync); + static int hci_init0_sync(struct hci_dev *hdev) { int err; -- 2.34.1