linux-kernel - [PATCHv5 0/2] coresight: Do not default to CPU0 for missing CPU phandle

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Message-Id: <cover.1561659046.git.saiprakash.ranjan@codeaurora.org>
Date:   Thu, 27 Jun 2019 23:45:27 +0530
From:   Sai Prakash Ranjan <saiprakash.ranjan@...eaurora.org>
To:     Mathieu Poirier <mathieu.poirier@...aro.org>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Rob Herring <robh+dt@...nel.org>, devicetree@...r.kernel.org,
        Leo Yan <leo.yan@...aro.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        David Brown <david.brown@...aro.org>,
        Mark Rutland <mark.rutland@....com>
Cc:     Rajendra Nayak <rnayak@...eaurora.org>,
        Vivek Gautam <vivek.gautam@...eaurora.org>,
        Sibi Sankar <sibis@...eaurora.org>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org,
        Sai Prakash Ranjan <saiprakash.ranjan@...eaurora.org>
Subject: [PATCHv5 0/2] coresight: Do not default to CPU0 for missing CPU phandle

In case of missing CPU phandle, the affinity is set default to
CPU0 which is not a correct assumption. Fix this in coresight
platform to set affinity to invalid and abort the probe in drivers.
Also update the dt-bindings accordingly.

v5:
 * Separate out the dt-bindings patch.

v4:
 * Fix return for !CONFIG_ACPI and !CONFIG_OF.

v3:
 * Addressed review comments from Suzuki and updated
   acpi_coresight_get_cpu.
 * Removed patch 2 which had invalid check for online
   cpus.

v2:
 * Addressed review comments from Suzuki and Mathieu.
 * Allows the probe of etm and cpu-debug to abort earlier
   in case of unavailability of respective cpus.

Sai Prakash Ranjan (2):
  dt-bindings: coresight: Change CPU phandle to required property
  coresight: Do not default to CPU0 for missing CPU phandle

 .../bindings/arm/coresight-cpu-debug.txt      |  4 ++--
 .../devicetree/bindings/arm/coresight.txt     |  8 +++++---
 .../hwtracing/coresight/coresight-cpu-debug.c |  3 +++
 drivers/hwtracing/coresight/coresight-etm3x.c |  3 +++
 drivers/hwtracing/coresight/coresight-etm4x.c |  3 +++
 .../hwtracing/coresight/coresight-platform.c  | 20 +++++++++----------
 6 files changed, 26 insertions(+), 15 deletions(-)

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