perf/arm-cci: Assign parents for event_source device

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@kroah.com/
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Link: https://lore.kernel.org/r/20240412161057.14099-19-Jonathan.Cameron@huawei.com
Signed-off-by: Will Deacon <will@kernel.org>

diff --git a/drivers/perf/arm-cci.c b/drivers/perf/arm-cci.c
index 6be03f81ae5db7489dd6ae49790ee5f1c99ca37e..a7fd806779197fbc0cc5009a74b7ddec5ecd70d6 100644 (file)
--- a/drivers/perf/arm-cci.c
+++ b/drivers/perf/arm-cci.c
@@ -1409,6 +1409,7 @@ static int cci_pmu_init(struct cci_pmu *cci_pmu, struct platform_device *pdev)
 
        cci_pmu->pmu = (struct pmu) {
                .module         = THIS_MODULE,
+               .parent         = &pdev->dev,
                .name           = cci_pmu->model->name,
                .task_ctx_nr    = perf_invalid_context,
                .pmu_enable     = cci_pmu_enable,