coresight: etm4x: Fix missing trctraceidr file in sysfs

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[ Upstream commit 9f37d37980 ]

The trace ID patchset adjusted the handling of the TRCTRACEIDR register
sysfs to allocate on read.

Although this was initally correct, the final version of the patch series
introduced an error which resulted in the mgmt/trctraceidr file in sysfs
not being visible.

This patch fixes that issue.

Fixes: df4871204e ("coresight: etm4x: Update ETM4 driver to use Trace ID API")
Reported-by: Junhao He <hejunhao3@huawei.com>
Link: https://lists.linaro.org/archives/list/coresight@lists.linaro.org/thread/KK3CVVMRHJWVUORKMFJRSXYCEDFKENQJ/
Signed-off-by: Mike Leach <mike.leach@linaro.org>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Link: https://lore.kernel.org/r/20230512133054.235073-1-mike.leach@linaro.org
Signed-off-by: Sasha Levin <sashal@kernel.org>

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This commit is contained in:

Mike Leach 2023-05-12 14:30:54 +01:00 • committed by Greg Kroah-Hartman

parent bab5cd4fde

commit d0674d07e4

1 changed files with 18 additions and 9 deletions

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drivers/hwtracing/coresight/coresight-etm4x-sysfs.c

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