Currently the PMU device appears directly under /sys/devices/ Only root busses should appear there, so instead assign the pmu->dev parent to be the platform device. Link: https://lore.kernel.org/linux-cxl/ZCLI9A40PJsyqAmq@xxxxxxxxx/ Signed-off-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx> --- Note that the ACPI path for this driver has no obvious 'parent' to use so I've left that for now. See armv8_pmu_driver_init() in arch/arm64/kernel/perf_event.c Suggestions welcome! --- drivers/perf/arm_pmu_platform.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/perf/arm_pmu_platform.c b/drivers/perf/arm_pmu_platform.c index 933b96e243b8..705ed45402ff 100644 --- a/drivers/perf/arm_pmu_platform.c +++ b/drivers/perf/arm_pmu_platform.c @@ -197,6 +197,7 @@ int arm_pmu_device_probe(struct platform_device *pdev, if (!pmu) return -ENOMEM; + pmu->pmu.parent = &pdev->dev; pmu->plat_device = pdev; ret = pmu_parse_irqs(pmu); -- 2.37.2
