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[199.106.103.52]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-3147e1b6a45sm27960484eec.28.2026.07.24.01.21.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 24 Jul 2026 01:22:00 -0700 (PDT) From: Wei Deng Date: Fri, 24 Jul 2026 13:51:56 +0530 Subject: [PATCH v3] 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: <20260724-hamoa-m2-sub-id-v2-v3-1-af97de70bbbe@oss.qualcomm.com> X-B4-Tracking: v=1; b=H4sIAKMgY2oC/32NQQ6CQAxFr0K6tmQoguLKexgWA3ZkEofRqRAN4 e5WDmDSNHn/p68LCCfPAqdsgcSzFx9HhXKXQT/Y8cbor8pAhmpzoBIHG6LFQChTpx3OhO5Y743 tqSJzBT18JHb+vUkvrfLg5RXTZ/sx0y/9q9Mp0BXGNRV3DXfuHEXy52TvfQwh1wXtuq5fCzNWF LsAAAA= 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: HISkqJNi_JsCAmIJhkbaTGXklrVuEB9E X-Proofpoint-GUID: HISkqJNi_JsCAmIJhkbaTGXklrVuEB9E X-Authority-Analysis: v=2.4 cv=e/k2j6p/ c=1 sm=1 tr=0 ts=6a6320aa 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=Um2Pa8k9VHT-vaBCBUpS: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: AW1haW4tMjYwNzI0MDA3NSBTYWx0ZWRfX8Q9izU0c705S z3yOP2abEVJysqxOF0C7W+KMwPPqRkMeOF1mJIrU5i9Hji15Tg1xpbgI9+dbrYyRJ9QfZpN2wkx DyowaU+j7sVi0F3Z1a5+cauw1G2J0qcY4rq1SgOu6t4Z55xWrSmGKDWkxQ1f20fn8JSmUZyArnO vr4DlgNjxWARBMjRREaaHqwXko3Nb/SUXMj65S3T7NajiFn2/ZIMiKJwDdv3nSG7VgduPQI1CcA iYgPvMLxDiv6GH3BNb36cqaMNhaWpg0pasDsUUU44Qu3hqRGjW4pZzizqphnZpebN57HT243fUH dOV8u12Oj7ONEI67mQsg1fBgcgqAMZMvIoXn7TVbuWqa/Xnz6cBke1ZKuylQFh8QbmiwrEPoF8m q++TTW9FNQ2/Zl3HnaTk2MkxUgAg2CyXZ5FO7anIyum84JnNHjrG2MxrfGdqS+1C1wYmtMX4hJJ oS6vyZM7XiDv2uJcsrQ== X-Proofpoint-Spam-Info: AW1haW4tMjYwNzI0MDA3NSBTYWx0ZWRfXx+/y6+/eFHsF CB2G7EN8WMmRuAr810F8IP8wm2mTBnt4AoaHnZFwTj3szZAF1yLpi5chjVCdTlTOmpg3QsnFlzq 8vloEJtHEFWcKMG/FHXCZY9gKYeWMho= 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=2026-07-24_01,2026-07-22_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 priorityscore=1501 lowpriorityscore=0 impostorscore=0 malwarescore=0 clxscore=1015 spamscore=0 phishscore=0 bulkscore=0 adultscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2607240075 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 v3: - Rebased on current pwrseq/for-next tip (Bartosz dropped a previously queued patch); no changes to the patch content itself. Changes in v2: - Send this patch independently, at Bartosz's request. - Update commit message. - Collect Reviewed-by: Manivannan Sadhasivam. Link to v2: https://lore.kernel.org/all/20260723-hamoa-m2-sub-id-v2-v2-1-f1= 0f95eb9ebf@oss.qualcomm.com/ Link to v1: https://lore.kernel.org/all/20260709-fix-hamoa-m2-w-disable2-v1= -2-5e725091266a@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 7cb455569d8e..9c096388d8a2 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" }, { } /* Sentinel */ }; --- base-commit: 1656f4f2eb45d9f18515ac00657a2494719fa065 change-id: 20260723-hamoa-m2-sub-id-v2-f8640ac2520d Best regards, --=20 Wei Deng