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coresight: etm4x: Correct polling IDLE bit
Since commit4ff6039ffb("coresight-etm4x: add isb() before reading the TRCSTATR"), the code has incorrectly been polling the PMSTABLE bit instead of the IDLE bit. This commit corrects the typo. Fixes:4ff6039ffb("coresight-etm4x: add isb() before reading the TRCSTATR") Reviewed-by: Yeoreum Yun <yeoreum.yun@arm.com> Reviewed-by: Mike Leach <mike.leach@linaro.org> Tested-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/20251111-arm_coresight_power_management_fix-v6-4-f55553b6c8b3@arm.com
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