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coresight: etm4x: Correct polling IDLE bit

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Since commit 4ff6039ffb79 ("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: 4ff6039ffb79 ("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
This commit is contained in:
Leo Yan 2025-11-11 18:58:38 +00:00 committed by Suzuki K Poulose
parent ab3fde32af
commit 4dc4e22f95
1 changed files with 1 additions and 1 deletions
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2
drivers/hwtracing/coresight/coresight-etm4x-core.c
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@ -1924,7 +1924,7 @@ static int __etm4_cpu_save(struct etmv4_drvdata *drvdata)
state->trcpdcr = etm4x_read32(csa, TRCPDCR);
/* wait for TRCSTATR.IDLE to go up */
if (etm4x_wait_status(csa, TRCSTATR_PMSTABLE_BIT, 1)) {
if (etm4x_wait_status(csa, TRCSTATR_IDLE_BIT, 1)) {
dev_err(etm_dev,
"timeout while waiting for Idle Trace Status\n");
etm4_os_unlock(drvdata);