perf/arm-smmuv3: 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/
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Link: https://lore.kernel.org/r/20240412161057.14099-23-Jonathan.Cameron@huawei.com
Signed-off-by: Will Deacon <will@kernel.org>

diff --git a/drivers/perf/arm_smmuv3_pmu.c b/drivers/perf/arm_smmuv3_pmu.c
index 719aa953a1c4d6cff65426ae6099859065380543..d5fa92ba8373976982a35cd5d706551d885e657e 100644 (file)
--- a/drivers/perf/arm_smmuv3_pmu.c
+++ b/drivers/perf/arm_smmuv3_pmu.c
@@ -860,6 +860,7 @@ static int smmu_pmu_probe(struct platform_device *pdev)
 
        smmu_pmu->pmu = (struct pmu) {
                .module         = THIS_MODULE,
+               .parent         = &pdev->dev,
                .task_ctx_nr    = perf_invalid_context,
                .pmu_enable     = smmu_pmu_enable,
                .pmu_disable    = smmu_pmu_disable,