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, 99 insertions, 0 deletions

diff --git a/crypto/tcrypt.h b/crypto/tcrypt.h
new file mode 100644
index 000000000..85c3f77bc
--- /dev/null
+++ b/crypto/tcrypt.h
@@ -0,0 +1,99 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Quick & dirty crypto benchmarking module.
+ *
+ * This will only exist until we have a better benchmarking mechanism
+ * (e.g. a char device).
+ *
+ * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
+ * Copyright (c) 2002 Jean-Francois Dive <jef@linuxbe.org>
+ * Copyright (c) 2007 Nokia Siemens Networks
+ */
+#ifndef _CRYPTO_TCRYPT_H
+#define _CRYPTO_TCRYPT_H
+
+struct cipher_speed_template {
+	const char *key;
+	unsigned int klen;
+};
+
+struct aead_speed_template {
+	const char *key;
+	unsigned int klen;
+};
+
+struct hash_speed {
+	unsigned int blen;	/* buffer length */
+	unsigned int plen;	/* per-update length */
+};
+
+/*
+ * DES test vectors.
+ */
+#define DES3_SPEED_VECTORS	1
+
+static struct cipher_speed_template des3_speed_template[] = {
+	{
+		.key	= "\x01\x23\x45\x67\x89\xab\xcd\xef"
+			  "\x55\x55\x55\x55\x55\x55\x55\x55"
+			  "\xfe\xdc\xba\x98\x76\x54\x32\x10",
+		.klen	= 24,
+	}
+};
+
+/*
+ * Cipher speed tests
+ */
+static u8 speed_template_8[] = {8, 0};
+static u8 speed_template_16[] = {16, 0};
+static u8 speed_template_24[] = {24, 0};
+static u8 speed_template_8_16[] = {8, 16, 0};
+static u8 speed_template_8_32[] = {8, 32, 0};
+static u8 speed_template_16_32[] = {16, 32, 0};
+static u8 speed_template_16_24_32[] = {16, 24, 32, 0};
+static u8 speed_template_20_28_36[] = {20, 28, 36, 0};
+static u8 speed_template_32_40_48[] = {32, 40, 48, 0};
+static u8 speed_template_32_48[] = {32, 48, 0};
+static u8 speed_template_32_48_64[] = {32, 48, 64, 0};
+static u8 speed_template_32_64[] = {32, 64, 0};
+static u8 speed_template_32[] = {32, 0};
+
+/*
+ * AEAD speed tests
+ */
+static u8 aead_speed_template_19[] = {19, 0};
+static u8 aead_speed_template_20_28_36[] = {20, 28, 36, 0};
+static u8 aead_speed_template_36[] = {36, 0};
+
+/*
+ * Digest speed tests
+ */
+static struct hash_speed generic_hash_speed_template[] = {
+	{ .blen = 16,	.plen = 16, },
+	{ .blen = 64,	.plen = 16, },
+	{ .blen = 64,	.plen = 64, },
+	{ .blen = 256,	.plen = 16, },
+	{ .blen = 256,	.plen = 64, },
+	{ .blen = 256,	.plen = 256, },
+	{ .blen = 1024,	.plen = 16, },
+	{ .blen = 1024,	.plen = 256, },
+	{ .blen = 1024,	.plen = 1024, },
+	{ .blen = 2048,	.plen = 16, },
+	{ .blen = 2048,	.plen = 256, },
+	{ .blen = 2048,	.plen = 1024, },
+	{ .blen = 2048,	.plen = 2048, },
+	{ .blen = 4096,	.plen = 16, },
+	{ .blen = 4096,	.plen = 256, },
+	{ .blen = 4096,	.plen = 1024, },
+	{ .blen = 4096,	.plen = 4096, },
+	{ .blen = 8192,	.plen = 16, },
+	{ .blen = 8192,	.plen = 256, },
+	{ .blen = 8192,	.plen = 1024, },
+	{ .blen = 8192,	.plen = 4096, },
+	{ .blen = 8192,	.plen = 8192, },
+
+	/* End marker */
+	{  .blen = 0,	.plen = 0, }
+};
+
+#endif	/* _CRYPTO_TCRYPT_H */