usb: typec: qcom-pmic-typec: disable cc_debounce_dwork on stopgrafted

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 <stable@kernel.org>  # v6.10+
Assisted-by: Codex:gpt-5.6
Signed-off-by: Fan Wu <fanwu01@zju.edu.cn>
Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://patch.msgid.link/20260820135307.153773-2-fanwu01@zju.edu.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 23 insertions, 0 deletions

diff --git a/include/net/ethoc.h b/include/net/ethoc.h
new file mode 100644
index 000000000..73810f3ca
--- /dev/null
+++ b/include/net/ethoc.h
@@ -0,0 +1,23 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * linux/include/net/ethoc.h
+ *
+ * Copyright (C) 2008-2009 Avionic Design GmbH
+ *
+ * Written by Thierry Reding <thierry.reding@avionic-design.de>
+ */
+
+#ifndef LINUX_NET_ETHOC_H
+#define LINUX_NET_ETHOC_H 1
+
+#include <linux/if.h>
+#include <linux/types.h>
+
+struct ethoc_platform_data {
+	u8 hwaddr[IFHWADDRLEN];
+	s8 phy_id;
+	u32 eth_clkfreq;
+	bool big_endian;
+};
+
+#endif /* !LINUX_NET_ETHOC_H */