The patch below does not apply to the 5.10-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 stable@vger.kernel.org.

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-5.10.y git checkout FETCH_HEAD git cherry-pick -x fc8fb9eea94d8f476e15f3a4a7addeb16b3b99d6 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to 'stable@vger.kernel.org' --in-reply-to '2024061756-glance-estate-894f@gregkh' --subject-prefix 'PATCH 5.10.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")

thanks,

greg k-h

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

From fc8fb9eea94d8f476e15f3a4a7addeb16b3b99d6 Mon Sep 17 00:00:00 2001 From: Kyle Tso kyletso@google.com 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]

Fixes: f0690a25a140 ("staging: typec: USB Type-C Port Manager (tcpm)") Cc: stable@vger.kernel.org Signed-off-by: Kyle Tso kyletso@google.com Reviewed-by: Heikki Krogerus heikki.krogerus@linux.intel.com Link: https://lore.kernel.org/r/20240520154858.1072347-1-kyletso@google.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

diff --git a/drivers/usb/typec/tcpm/tcpm.c b/drivers/usb/typec/tcpm/tcpm.c index be4127ef84e9..5d4da962acc8 100644 --- a/drivers/usb/typec/tcpm/tcpm.c +++ b/drivers/usb/typec/tcpm/tcpm.c @@ -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: