linux-kernel - Re: [PATCHv3 1/1] coresight: Do not default to CPU0 for missing CPU phandle

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Date:   Mon, 24 Jun 2019 09:26:17 +0100
From:   Suzuki K Poulose <suzuki.poulose@....com>
To:     saiprakash.ranjan@...eaurora.org, mathieu.poirier@...aro.org,
        leo.yan@...aro.org, robh+dt@...nel.org, devicetree@...r.kernel.org,
        alexander.shishkin@...ux.intel.com, andy.gross@...aro.org,
        david.brown@...aro.org, mark.rutland@....com
Cc:     rnayak@...eaurora.org, vivek.gautam@...eaurora.org,
        sibis@...eaurora.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org
Subject: Re: [PATCHv3 1/1] coresight: Do not default to CPU0 for missing CPU
 phandle

Sai,

Thanks for getting this done.

On 24/06/2019 04:36, Sai Prakash Ranjan wrote:
> Coresight platform support assumes that a missing "cpu" phandle
> defaults to CPU0. This could be problematic and unnecessarily binds
> components to CPU0, where they may not be. Let us make the DT binding
> rules a bit stricter by not defaulting to CPU0 for missing "cpu"
> affinity information.
> 
> Also in coresight etm and cpu-debug drivers, abort the probe
> for such cases.
> 
> Signed-off-by: Sai Prakash Ranjan <saiprakash.ranjan@...eaurora.org>

Reviewed-by: Suzuki K Poulose <suzuki.poulose@....com>