From 263f7d61a4201cde16849b2d016251806e7418be Mon Sep 17 00:00:00 2001 From: Fan Wu Date: Thu, 20 Aug 2026 13:53:06 +0000 Subject: usb: typec: qcom-pmic-typec: disable cc_debounce_dwork on stop cc_debounce_dwork is queued from the set_cc() and start_toggling() callbacks, which run from TCPM's kthread worker. port_stop() returns before tcpm_unregister_port() destroys that worker. Flushing the worker during unregister may therefore run a callback which queues the delayed work after port_stop() has returned. The delayed work can then run after devres has freed pmic_typec_port. Use disable_delayed_work_sync() in port_stop() to cancel a pending instance and prevent the TCPM callbacks from queueing another one. This issue was found by an in-house static analysis tool. Fixes: a4422ff22142 ("usb: typec: qcom: Add Qualcomm PMIC Type-C driver") Cc: stable # v6.10+ Assisted-by: Codex:gpt-5.6 Signed-off-by: Fan Wu Acked-by: Heikki Krogerus Link: https://patch.msgid.link/20260820135307.153773-2-fanwu01@zju.edu.cn Signed-off-by: Greg Kroah-Hartman --- tools/perf/python/counting.py | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100755 tools/perf/python/counting.py (limited to 'tools/perf/python/counting.py') diff --git a/tools/perf/python/counting.py b/tools/perf/python/counting.py new file mode 100755 index 000000000..02121d2bb --- /dev/null +++ b/tools/perf/python/counting.py @@ -0,0 +1,36 @@ +#!/usr/bin/env python3 +# SPDX-License-Identifier: GPL-2.0 +# -*- python -*- +# -*- coding: utf-8 -*- + +import argparse +import perf + +def main(event: str): + evlist = perf.parse_events(event) + + for evsel in evlist: + evsel.read_format = perf.FORMAT_TOTAL_TIME_ENABLED | perf.FORMAT_TOTAL_TIME_RUNNING + + evlist.open() + evlist.enable() + + count = 100000 + while count > 0: + count -= 1 + + evlist.disable() + + for evsel in evlist: + for cpu in evsel.cpus(): + for thread in evsel.threads(): + counts = evsel.read(cpu, thread) + print(f"For {evsel} val: {counts.val} enable: {counts.ena} run: {counts.run}") + + evlist.close() + +if __name__ == '__main__': + ap = argparse.ArgumentParser() + ap.add_argument('-e', '--event', help="Events to open", default="cpu-clock,task-clock") + args = ap.parse_args() + main(args.event) -- cgit v1.3.1