When there are multiple of instances of PCIe controllers, registration to perf driver fails with this error. This is because of having same bdf value for devices under two different controllers. Update the logic to use sbdf which is a unique number in case of multi instance also. When the PCIe devices are discovered late, the driver can't find the PCIe devices and returns in the init without registering with the bus notifier. Due to that the devices which are discovered late the driver can't register for this. Register for bus notifier & driver even if the device is not found in init. Update the vendor table with QCOM PCIe vendorid to support QCOM devices. Signed-off-by: Krishna chaitanya chundru <quic_krichai@xxxxxxxxxxx> --- Changes in v2: - Use platform dev id for instead of encoding again (Yicong Yang). - Register for driver always along with bus notifier(Yicong Yang). - Link to v1: https://lore.kernel.org/r/20240731-dwc_pmu_fix-v1-0-ca47d153e5b2@xxxxxxxxxxx --- Krishna chaitanya chundru (4): perf/dwc_pcie: Fix registration issue in multi PCIe controller instances Documentation: dwc_pcie_pmu: Update bdf to sbdf perf/dwc_pcie: Always register for PCIe bus notifier perf/dwc_pcie: Add support for QCOM vendor devices Documentation/admin-guide/perf/dwc_pcie_pmu.rst | 16 ++++++++-------- drivers/perf/dwc_pcie_pmu.c | 22 +++++++++------------- 2 files changed, 17 insertions(+), 21 deletions(-) --- base-commit: b236787b0da563e3bad0dab1b4b9a5bb54eabd39 change-id: 20240731-dwc_pmu_fix-3729bd3657fe prerequisite-change-id: 20240728-mhi_runtime_pm-2383b74c71ed:v1 prerequisite-patch-id: 90e73ba7ee4538c67f21f7f23ae4d931cb6e9967 Best regards, -- Krishna chaitanya chundru <quic_krichai@xxxxxxxxxxx>
