coresight: tmc: Cleanup operation mode handling

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The mode of operation of the TMC tracked in drvdata->mode is defined
as a local_t type. This is always checked and modified under the
drvdata->spinlock and hence we don't need local_t for it and the
unnecessary synchronisation instructions that comes with it. This
change makes the code a bit more cleaner.

Also fixes the order in which we update the drvdata->mode to
CS_MODE_DISABLED. i.e, in tmc_disable_etX_sink we change the
mode to CS_MODE_DISABLED before invoking tmc_disable_etX_hw()
which in turn depends on the mode to decide whether to dump the
trace to a buffer.

Applies on mathieu's coresight/next tree [1]

https://git.linaro.org/kernel/coresight.git next

Reported-by: Venkatesh Vivekanandan <venkatesh.vivekanandan@broadcom.com>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

This commit is contained in:

Suzuki K. Poulose 2016-11-29 09:47:15 -07:00 • committed by Greg Kroah-Hartman

parent d52c9750f1

commit 297ab90f15

3 changed files with 26 additions and 34 deletions

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32

drivers/hwtracing/coresight/coresight-tmc-etf.c

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26

drivers/hwtracing/coresight/coresight-tmc-etr.c

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2

drivers/hwtracing/coresight/coresight-tmc.h

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