perf/arm-dsu: 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/20240412161057.14099-22-Jonathan.Cameron@huawei.com
Signed-off-by: Will Deacon <will@kernel.org>

diff --git a/drivers/perf/arm_dsu_pmu.c b/drivers/perf/arm_dsu_pmu.c
index adc0bbb5fafe4d6785d2f89109a16ae3844092e3..92248a24a1aabe36f4f2c7004ab8609f34eaac1f 100644 (file)
--- a/drivers/perf/arm_dsu_pmu.c
+++ b/drivers/perf/arm_dsu_pmu.c
@@ -742,6 +742,7 @@ static int dsu_pmu_device_probe(struct platform_device *pdev)
 
        dsu_pmu->pmu = (struct pmu) {
                .task_ctx_nr    = perf_invalid_context,
+               .parent         = &pdev->dev,
                .module         = THIS_MODULE,
                .pmu_enable     = dsu_pmu_enable,
                .pmu_disable    = dsu_pmu_disable,