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Subject: Re: [PATCH 04/32] perf/hisi-uncore: Assign parents for event_source
 devices
To:     Jonathan Cameron <Jonathan.Cameron@huawei.com>,
        Mark Rutland <mark.rutland@arm.com>,
        Peter Zijlstra <peterz@infradead.org>,
        Ingo Molnar <mingo@redhat.com>,
        Arnaldo Carvalho de Melo <acme@kernel.org>,
        Will Deacon <will@kernel.org>, <linux-kernel@vger.kernel.org>,
        <linux-arm-kernel@lists.infradead.org>,
        <gregkh@linuxfoundation.org>
References: <20230404134225.13408-1-Jonathan.Cameron@huawei.com>
 <20230404134225.13408-5-Jonathan.Cameron@huawei.com>
From:   Yicong Yang <yangyicong@huawei.com>
Message-ID: <233516c4-be85-ec0b-e586-bb1c5f78a9b5@huawei.com>
Date:   Thu, 6 Apr 2023 11:57:30 +0800
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On 2023/4/4 21:41, Jonathan Cameron wrote:
> 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>

Reviewed-by: Yicong Yang <yangyicong@hisilicon.com>

> ---
>  drivers/perf/hisilicon/hisi_uncore_pmu.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/perf/hisilicon/hisi_uncore_pmu.c b/drivers/perf/hisilicon/hisi_uncore_pmu.c
> index f1b0f5e1a28f..b4350e5dc3fc 100644
> --- a/drivers/perf/hisilicon/hisi_uncore_pmu.c
> +++ b/drivers/perf/hisilicon/hisi_uncore_pmu.c
> @@ -538,6 +538,7 @@ void hisi_pmu_init(struct hisi_pmu *hisi_pmu, const char *name,
>  
>  	pmu->name               = name;
>  	pmu->module             = module;
> +	pmu->parent		= hisi_pmu->dev;
>  	pmu->task_ctx_nr        = perf_invalid_context;
>  	pmu->event_init         = hisi_uncore_pmu_event_init;
>  	pmu->pmu_enable         = hisi_uncore_pmu_enable;
>