hwtracing: hisi_ptt: Assign parent 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 PCI device.

Link: https://lore.kernel.org/linux-cxl/ZCLI9A40PJsyqAmq@kroah.com/
Cc: Suzuki K Poulose <suzuki.poulose@arm.com>
Reviewed-by: Yicong Yang <yangyicong@hisilicon.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Acked-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Link: https://lore.kernel.org/r/20240412161057.14099-31-Jonathan.Cameron@huawei.com

diff --git a/drivers/hwtracing/ptt/hisi_ptt.c b/drivers/hwtracing/ptt/hisi_ptt.c
index 4bf04a9778407acca7893172656d897ecd4c375a..3090479a2979883356edf9027ffb22aeeb371674 100644 (file)
--- a/drivers/hwtracing/ptt/hisi_ptt.c
+++ b/drivers/hwtracing/ptt/hisi_ptt.c
@@ -1221,6 +1221,7 @@ static int hisi_ptt_register_pmu(struct hisi_ptt *hisi_ptt)
 
        hisi_ptt->hisi_ptt_pmu = (struct pmu) {
                .module         = THIS_MODULE,
+               .parent         = &hisi_ptt->pdev->dev,
                .capabilities   = PERF_PMU_CAP_EXCLUSIVE | PERF_PMU_CAP_NO_EXCLUDE,
                .task_ctx_nr    = perf_sw_context,
                .attr_groups    = hisi_ptt_pmu_groups,