perf/riscv: 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 appropriate platform devices.

Link: https://lore.kernel.org/linux-cxl/ZCLI9A40PJsyqAmq@kroah.com/
Cc: Atish Patra <atishp@atishpatra.org>
CC: Anup Patel <anup@brainfault.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Link: https://lore.kernel.org/r/20240412161057.14099-13-Jonathan.Cameron@huawei.com
Signed-off-by: Will Deacon <will@kernel.org>

diff --git a/drivers/perf/riscv_pmu_legacy.c b/drivers/perf/riscv_pmu_legacy.c
index fa0bccf4edf2ea6172c7ee72d577cb0904073ea7..04487ad7fba0b538508ba3ae3628e437d2dc1b53 100644 (file)
--- a/drivers/perf/riscv_pmu_legacy.c
+++ b/drivers/perf/riscv_pmu_legacy.c
@@ -136,6 +136,7 @@ static int pmu_legacy_device_probe(struct platform_device *pdev)
        pmu = riscv_pmu_alloc();
        if (!pmu)
                return -ENOMEM;
+       pmu->pmu.parent = &pdev->dev;
        pmu_legacy_init(pmu);
 
        return 0;

diff --git a/drivers/perf/riscv_pmu_sbi.c b/drivers/perf/riscv_pmu_sbi.c
index 5aef5a8737b232cc8488692f5de314495282498a..82636273d726595f4f460f84ed470e64d69a990d 100644 (file)
--- a/drivers/perf/riscv_pmu_sbi.c
+++ b/drivers/perf/riscv_pmu_sbi.c
@@ -1080,6 +1080,7 @@ static int pmu_sbi_device_probe(struct platform_device *pdev)
        }
 
        pmu->pmu.attr_groups = riscv_pmu_attr_groups;
+       pmu->pmu.parent = &pdev->dev;
        pmu->cmask = cmask;
        pmu->ctr_start = pmu_sbi_ctr_start;
        pmu->ctr_stop = pmu_sbi_ctr_stop;