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[199.106.103.52]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-3147e088d3fsm14776028eec.25.2026.07.22.20.34.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 22 Jul 2026 20:34:28 -0700 (PDT) From: Wei Deng Date: Thu, 23 Jul 2026 09:04:24 +0530 Subject: [PATCH v2] power: sequencing: pcie-m2: Match WCN6855 and WCN7851 UART BT variants by subdevice ID 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: quoted-printable Message-Id: <20260723-hamoa-m2-sub-id-v2-v2-1-f10f95eb9ebf@oss.qualcomm.com> X-B4-Tracking: v=1; b=H4sIAL+LYWoC/x2MywqAIBAAf0X23IJsT/qV6GC21R7UUIog/Pek4 zDMvJA4CicY1QuRb0kSfAGqFNjD+J1R1sJAmjrdU42HccGgI0zXUhzehNvQNdpYakmvUMIz8ib PP53mnD86QXk+ZAAAAA== X-Change-ID: 20260723-hamoa-m2-sub-id-v2-f8640ac2520d To: Manivannan Sadhasivam , Bartosz Golaszewski Cc: linux-pci@vger.kernel.org, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, quic_chezhou@quicinc.com, cheng.jiang@oss.qualcomm.com, shuai.zhang@oss.qualcomm.com, jinwang.li@oss.qualcomm.com, xiuzhuo.shang@oss.qualcomm.com, mengshi.wu@oss.qualcomm.com, Wei Deng X-Mailer: b4 0.14.3 X-Proofpoint-ORIG-GUID: nILZJSdluVwr9kOC8vT9ZIjmLve5RY7z X-Proofpoint-GUID: nILZJSdluVwr9kOC8vT9ZIjmLve5RY7z X-Proofpoint-Spam-Info: AW1haW4tMjYwNzIzMDAzMyBTYWx0ZWRfX7XBR/ghIcea2 dXE8ENjmhBeMz+jH6yxpxDpNS5Q3qxedqMhd9gExSJeBLKCCI6NiLcMFvSyZRjnTgzepnrVmzcx uZoa8uc7GNEeub808S06RXoodq9YY3s= X-Authority-Analysis: v=2.4 cv=L/ItheT8 c=1 sm=1 tr=0 ts=6a618bcb cx=c_pps a=JL+w9abYAAE89/QcEU+0QA==:117 a=b9+bayejhc3NMeqCNyeLQQ==:17 a=IkcTkHD0fZMA:10 a=RAioF0-LDSMA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=_glEPmIy2e8OvE2BGh3C:22 a=VwQbUJbxAAAA:8 a=EUspDBNiAAAA:8 a=718rDa6z-us7KMpumiEA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=324X-CrmTo6CU4MGRt3R:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzIzMDAzMyBTYWx0ZWRfX6rbpB9f9yL4J SL9RHuAIqayepOPTdwqkntRDI/3jbi1KJDB+p5EM/eABk/2yhlyApd6Lgfi2AEyVVE8inM4IlqY HvFL66p/HAJBt0L/TNyPdrXxa2YIfl51t/2oS2lZn4OsiEa5KGHok7poHi2W0PLQSrAS1SJM5kl 5V6gO6HfEUQzVZCsxsTN0UMz5EF7j4hTDpaPQ8fXTFhVDnqARfOxDv+yIuoLTtqihIyn7P24OSV 2B9CiQVNlL73S35GCXYcDQ2YNM+qIYZx3Hs+IeIawCQ9Ar0l3Ne70BtPvSRhFPrk/dQKv8u5rYo 3Hrfuu4lFZAVI7YOY+SHVNJfjQNeomKn4ioJkr2uZfCCiv7QedsHDJRMgDWB4G4Zk2BHEcmHwIr 7xCPEsesCSS5ektHRbhGw3yU/b2dzNYn4Qn6yH/FP301DlWWR8g4RGttaM1vEUyaa6TN6nvaJr5 uk7kdlXXW1qQzxJjhhw== 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=2026-07-23_01,2026-07-22_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 lowpriorityscore=0 adultscore=0 suspectscore=0 priorityscore=1501 impostorscore=0 spamscore=0 bulkscore=0 malwarescore=0 phishscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2607230033 The WCN6855 and WCN7851 combo chips are available in M.2 card variants that differ by their BT interface: some expose BT over UART while others expose BT over USB. Both variants use the same PCIe device ID for the WiFi interface, distinguished only by their sub-system device ID. The bare PCI_DEVICE() entries match all sub-system IDs, so both UART and USB variants hit the same table entry and trigger UART serdev creation. For USB variants this is wrong =E2=80=94 there is no UART BT interface on s= uch a card, and the serdev probe will fail. Narrow the matches to UART variants only by using PCI_DEVICE_SUB with their respective sub-system IDs, so USB variants no longer trigger UART serdev creation. Reviewed-by: Manivannan Sadhasivam Signed-off-by: Wei Deng --- Changes in v2: - Send this patch independently, at Bartosz's request. - Update commit message. - Collect Reviewed-by: Manivannan Sadhasivam. Link: https://lore.kernel.org/all/20260709-fix-hamoa-m2-w-disable2-v1-2-5e7= 25091266a@oss.qualcomm.com/ --- drivers/power/sequencing/pwrseq-pcie-m2.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/power/sequencing/pwrseq-pcie-m2.c b/drivers/power/sequ= encing/pwrseq-pcie-m2.c index 26f695b98d2b..5dfc9f9ef64f 100644 --- a/drivers/power/sequencing/pwrseq-pcie-m2.c +++ b/drivers/power/sequencing/pwrseq-pcie-m2.c @@ -192,9 +192,11 @@ static const struct pci_device_id pwrseq_m2_pci_ids[] = =3D { .driver_data =3D (kernel_ulong_t)"nxp,88w8987-bt" }, { PCI_DEVICE_SUB(PCI_VENDOR_ID_QCOM, 0x1103, PCI_VENDOR_ID_QCOM, 0x0108), .driver_data =3D (kernel_ulong_t)"qcom,qca2066-bt" }, - { PCI_DEVICE(PCI_VENDOR_ID_QCOM, 0x1103), + { PCI_DEVICE_SUB(PCI_VENDOR_ID_QCOM, 0x1103, PCI_VENDOR_ID_FOXCONN, 0xe10= 5), .driver_data =3D (kernel_ulong_t)"qcom,wcn6855-bt" }, - { PCI_DEVICE(PCI_VENDOR_ID_QCOM, 0x1107), + { PCI_DEVICE_SUB(PCI_VENDOR_ID_QCOM, 0x1103, PCI_VENDOR_ID_QCOM, 0x337e), + .driver_data =3D (kernel_ulong_t)"qcom,wcn6855-bt" }, + { PCI_DEVICE_SUB(PCI_VENDOR_ID_QCOM, 0x1107, PCI_VENDOR_ID_QCOM, 0x337c), .driver_data =3D (kernel_ulong_t)"qcom,wcn7850-bt" }, { PCI_DEVICE(PCI_VENDOR_ID_QCOM, 0x1112), .driver_data =3D (kernel_ulong_t)"qcom,qcc2072-bt" }, --- base-commit: 162ea02941a936f8899f3dbe10607b1d5af1b07b change-id: 20260723-hamoa-m2-sub-id-v2-f8640ac2520d Best regards, --=20 Wei Deng