FAILED: patch "[PATCH] usb: typec: tcpm: Ignore received Hard Reset in TOGGLING" failed to apply to 4.19-stable tree

The patch below does not apply to the 4.19-stable tree.
If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.

To reproduce the conflict and resubmit, you may use the following commands:

git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-4.19.y
git checkout FETCH_HEAD
git cherry-pick -x fc8fb9eea94d8f476e15f3a4a7addeb16b3b99d6
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<[email protected]>' --in-reply-to '2024061758-simplify-keg-8ee4@gregkh' --subject-prefix 'PATCH 4.19.y' HEAD^..

Possible dependencies:

fc8fb9eea94d ("usb: typec: tcpm: Ignore received Hard Reset in TOGGLING state") a6fe37f428c1 ("usb: typec: tcpm: Skip hard reset when in error recovery")
0908c5aca31e ("usb: typec: tcpm: AMS and Collision Avoidance")
f321a02caebd ("usb: typec: tcpm: Implement enabling Auto Discharge disconnect support") a30a00e37ceb ("usb: typec: tcpm: frs sourcing vbus callback")
8dc4bd073663 ("usb: typec: tcpm: Add support for Sink Fast Role SWAP(FRS)")
3ed8e1c2ac99 ("usb: typec: tcpm: Migrate workqueue to RT priority for processing events") aefc66afe42b ("usb: typec: pd: Fix formatting in pd.h header")
6bbe2a90a0bb ("usb: typec: tcpm: During PR_SWAP, source caps should be sent only after tSwapSourceStart") 95b4d51c96a8 ("usb: typec: tcpm: Refactor tcpm_handle_vdm_request")
8afe9a3548f9 ("usb: typec: tcpm: Refactor tcpm_handle_vdm_request payload handling") 03eafcfb60c0 ("usb: typec: tcpm: Add tcpm_queue_vdm_unlocked() helper")
5f2b8d87bca5 ("usb: typec: tcpm: Move mod_delayed_work(&port->vdm_state_machine) call into tcpm_queue_vdm()") 6e1c2241f4ce ("usb: typec: tcpm: Stay in BIST mode till hardreset or unattached") b2dcfefc43f7 ("usb: typec: tcpm: Support bist test data mode for compliance")
901789745a05 ("usb: typec: tcpm: Ignore CC and vbus changes in PORT_RESET change") 6ecc632d4b35 ("usb: typec: tcpm: set correct data role for non-DRD")
8face9aa57c8 ("usb: typec: Add parameter for the VDO to typec_altmode_enter()") a079973f462a ("usb: typec: tcpm: Remove tcpc_config configuration mechanism")
00ec21e58dc6 ("usb: typec: tcpm: Start using struct typec_operations")

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From fc8fb9eea94d8f476e15f3a4a7addeb16b3b99d6 Mon Sep 17 00:00:00 2001
From: Kyle Tso <[email protected]>
Date: Mon, 20 May 2024 23:48:58 +0800
Subject: [PATCH] usb: typec: tcpm: Ignore received Hard Reset in TOGGLING
state

Similar to what fixed in Commit a6fe37f428c1 ("usb: typec: tcpm: Skip hard reset when in error recovery"), the handling of the received Hard Reset has to be skipped during TOGGLING state.

[ 4086.021288] VBUS off
[ 4086.021295] pending state change SNK_READY -> SNK_UNATTACHED @ 650 ms [rev2 NONE_AMS]
[ 4086.022113] VBUS VSAFE0V
[ 4086.022117] state change SNK_READY -> SNK_UNATTACHED [rev2 NONE_AMS]
[ 4086.022447] VBUS off
[ 4086.022450] state change SNK_UNATTACHED -> SNK_UNATTACHED [rev2 NONE_AMS]
[ 4086.023060] VBUS VSAFE0V
[ 4086.023064] state change SNK_UNATTACHED -> SNK_UNATTACHED [rev2 NONE_AMS]
[ 4086.023070] disable BIST MODE TESTDATA
[ 4086.023766] disable vbus discharge ret:0
[ 4086.023911] Setting usb_comm capable false
[ 4086.028874] Setting voltage/current limit 0 mV 0 mA
[ 4086.028888] polarity 0
[ 4086.030305] Requesting mux state 0, usb-role 0, orientation 0
[ 4086.033539] Start toggling
[ 4086.038496] state change SNK_UNATTACHED -> TOGGLING [rev2 NONE_AMS]

// This Hard Reset is unexpected

[ 4086.038499] Received hard reset
[ 4086.038501] state change TOGGLING -> HARD_RESET_START [rev2 HARD_RESET]

index be4127ef84e9..5d4da962acc8 100644
@@ -6174,6 +6174,7 @@ static void _tcpm_pd_hard_reset(struct tcpm_port *port)
 		port->tcpc->set_bist_data(port->tcpc, false);
 
 	switch (port->state) {
+	case TOGGLING:
 	case ERROR_RECOVERY:
 	case PORT_RESET:
 	case PORT_RESET_WAIT_OFF: