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 --- Documentation/driver-api/firewire.rst | 50 +++++++++++++++++++++++++++++++++++ 1 file changed, 50 insertions(+) create mode 100644 Documentation/driver-api/firewire.rst (limited to 'Documentation/driver-api/firewire.rst') diff --git a/Documentation/driver-api/firewire.rst b/Documentation/driver-api/firewire.rst new file mode 100644 index 000000000..28a32410f --- /dev/null +++ b/Documentation/driver-api/firewire.rst @@ -0,0 +1,50 @@ +=========================================== +Firewire (IEEE 1394) driver Interface Guide +=========================================== + +Introduction and Overview +========================= + +The Linux FireWire subsystem adds some interfaces into the Linux system to + use/maintain+any resource on IEEE 1394 bus. + +The main purpose of these interfaces is to access address space on each node +on IEEE 1394 bus by ISO/IEC 13213 (IEEE 1212) procedure, and to control +isochronous resources on the bus by IEEE 1394 procedure. + +Two types of interfaces are added, according to consumers of the interface. A +set of userspace interfaces is available via `firewire character devices`. A set +of kernel interfaces is available via exported symbols in `firewire-core` module. + +Firewire char device data structures +==================================== + +.. include:: ../ABI/stable/firewire-cdev + :literal: + +.. kernel-doc:: include/uapi/linux/firewire-cdev.h + :internal: + +Firewire device probing and sysfs interfaces +============================================ + +.. include:: ../ABI/stable/sysfs-bus-firewire + :literal: + +.. kernel-doc:: drivers/firewire/core-device.c + :export: + +Firewire core transaction interfaces +==================================== + +.. kernel-doc:: drivers/firewire/core-transaction.c + :export: + +Firewire Isochronous I/O interfaces +=================================== + +.. kernel-doc:: include/linux/firewire.h + :functions: fw_iso_context_schedule_flush_completions +.. kernel-doc:: drivers/firewire/core-iso.c + :export: + -- cgit v1.3.1