coresight: tpda: fix the logic to setup the element size

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[ Upstream commit 43e0a92c04 ]

Some TPDM devices support both CMB and DSB datasets, requiring
the system to enable the port with both corresponding element sizes.

Currently, the logic treats tpdm_read_element_size as successful if
the CMB element size is retrieved correctly, regardless of whether
the DSB element size is obtained. This behavior causes issues
when parsing data from TPDM devices that depend on both element sizes.

To address this, the function should explicitly fail if the DSB
element size cannot be read correctly.

Fixes: e6d7f5252f ("coresight-tpda: Add support to configure CMB element")
Reviewed-by: James Clark <james.clark@linaro.org>
Signed-off-by: Jie Gan <jie.gan@oss.qualcomm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Link: https://lore.kernel.org/r/20250906-fix_element_size_issue-v2-1-dbb0ac2541a9@oss.qualcomm.com
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Jie Gan 2025-09-06 07:53:04 +08:00 • committed by Greg Kroah-Hartman

parent 296da78494

commit af82868328

1 changed files with 3 additions and 0 deletions

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drivers/hwtracing/coresight/coresight-tpda.c

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