coresight: Properly address errors in sink::disable() functions

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When disabling a sink the reference counter ensures the operation goes
through if nobody else is using it.  As such if drvdata::mode is already
set do CS_MODE_DISABLED, it is an error and should be reported as such.

Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Tested-by: Leo Yan <leo.yan@linaro.org>
Tested-by: Robert Walker <robert.walker@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Mathieu Poirier 2019-04-25 13:52:57 -06:00 • committed by Greg Kroah-Hartman

parent f973d88b75

commit 12dfc9e022

3 changed files with 12 additions and 15 deletions

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9

drivers/hwtracing/coresight/coresight-etb10.c

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

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9

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

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