perf/arm_cspmu: Assign parents for event_source devices

Currently all these devices appear directly under /sys/devices/
Only root busses should appear there, so instead assign the pmu->dev
parents 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/20240412161057.14099-8-Jonathan.Cameron@huawei.com
Signed-off-by: Will Deacon <will@kernel.org>

diff --git a/drivers/perf/arm_cspmu/arm_cspmu.c b/drivers/perf/arm_cspmu/arm_cspmu.c
index fd10042516650e651b3ba98f3404d0e7d93c0ed1..ba0cf2f466ef000f25170068354a40d60ce41262 100644 (file)
--- a/drivers/perf/arm_cspmu/arm_cspmu.c
+++ b/drivers/perf/arm_cspmu/arm_cspmu.c
@@ -1206,6 +1206,7 @@ static int arm_cspmu_register_pmu(struct arm_cspmu *cspmu)
        cspmu->pmu = (struct pmu){
                .task_ctx_nr    = perf_invalid_context,
                .module         = cspmu->impl.module,
+               .parent         = cspmu->dev,
                .pmu_enable     = arm_cspmu_enable,
                .pmu_disable    = arm_cspmu_disable,
                .event_init     = arm_cspmu_event_init,