coresight: cti: Fix register reads

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Introduce cti_read_single_reg() as an interface for reading registers
with unlocking the CS lock.  Consolidate register read in sysfs
interfaces using this new helper.

Fixes: b5213376c2 ("coresight: cti: Add sysfs access to program function registers")
Fixes: 1a556ca6cc ("coresight: cti: Add sysfs coresight mgmt register access")
Reviewed-by: Mike Leach <mike.leach@arm.com>
Signed-off-by: Leo Yan <leo.yan@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Link: https://lore.kernel.org/r/20260226-arm_coresight_cti_refactor_v1-v2-2-b30fada3cfec@arm.com

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Leo Yan 2026-02-26 09:23:50 +00:00 • committed by Suzuki K Poulose

parent ef7d4aaf68

commit 6582fe69ac

3 changed files with 14 additions and 4 deletions

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11

drivers/hwtracing/coresight/coresight-cti-core.c

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6

drivers/hwtracing/coresight/coresight-cti-sysfs.c

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1

drivers/hwtracing/coresight/coresight-cti.h

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