coresight: Protect unregistration with mutex

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The device registration is protected by CoreSight mutex to ensure the
atomic operations when adding a device onto bus.  One the other hand,
the locking is absent when unregister a device.

Use mutex to ensure atomicity on device unregistration.  During
unregistration, unbinding the associated CTI device is not included in
the locking region, as CTI has its own locking mechanism.

Fixes: 8c1d3f79d9 ("coresight: core: Fix coresight device probe failure issue")
Reviewed-by: James Clark <james.clark@linaro.org>
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/20260209-arm_coresight_refactor_dev_register-v4-3-62d6042f76f7@arm.com

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Leo Yan 2026-02-09 12:44:35 +00:00 • committed by Suzuki K Poulose

parent 2f322f0392

commit a6c4da4b95

1 changed files with 4 additions and 1 deletions

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drivers/hwtracing/coresight/coresight-core.c

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