linux-kernel - Re: [PATCH] coresight-tpdm: Correct the property name of MSR number

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Date:   Mon, 23 Oct 2023 11:17:21 +0800
From:   Tao Zhang <quic_taozha@...cinc.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Mathieu Poirier <mathieu.poirier@...aro.org>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Konrad Dybcio <konradybcio@...il.com>,
        Mike Leach <mike.leach@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>
CC:     Jinlong Mao <quic_jinlmao@...cinc.com>,
        Leo Yan <leo.yan@...aro.org>,
        "Greg Kroah-Hartman" <gregkh@...uxfoundation.org>,
        <coresight@...ts.linaro.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
        Tingwei Zhang <quic_tingweiz@...cinc.com>,
        Yuanfang Zhang <quic_yuanfang@...cinc.com>,
        Trilok Soni <quic_tsoni@...cinc.com>,
        Hao Zhang <quic_hazha@...cinc.com>,
        <linux-arm-msm@...r.kernel.org>, <andersson@...nel.org>
Subject: Re: [PATCH] coresight-tpdm: Correct the property name of MSR number


On 10/20/2023 4:59 PM, Krzysztof Kozlowski wrote:
> On 20/10/2023 10:13, Tao Zhang wrote:
>>>> diff --git a/drivers/hwtracing/coresight/coresight-tpdm.c b/drivers/hwtracing/coresight/coresight-tpdm.c
>>>> index b25284e..97654aa 100644
>>>> --- a/drivers/hwtracing/coresight/coresight-tpdm.c
>>>> +++ b/drivers/hwtracing/coresight/coresight-tpdm.c
>>>> @@ -892,7 +892,7 @@ static int tpdm_probe(struct amba_device *adev, const struct amba_id *id)
>>>>    
>>>>    	if (drvdata && tpdm_has_dsb_dataset(drvdata))
>>>>    		of_property_read_u32(drvdata->dev->of_node,
>>>> -			   "qcom,dsb_msr_num", &drvdata->dsb_msr_num);
>>>> +			   "qcom,dsb-msrs-num", &drvdata->dsb_msr_num);
>>> So you never tested your DTS... We can keep asking about this but still
>>> testing does not happen :/
>> Since this new property has not been applied on the exist upstream DTS,
>> I tested this driver with the
>>
>> local DTS. Unfortunately, the property name in the local DTS is not
>> updated, this is why it is not found
> But your local DTS would not pass dtbs_check tests, so that's why I am
> saying - you never tested it on mainline kernel.

Thanks, we will add this test in the future to ensure that DTS, doc and 
driver are consistent.


Best,

Tao

>
> Best regards,
> Krzysztof
>