FAILED: patch "[PATCH] usb: typec: tcpm: PSSourceOffTimer timeout in PR_Swap enters" failed to apply to 6.6-stable tree

FAILED: patch "[PATCH] usb: typec: tcpm: PSSourceOffTimer timeout in PR_Swap enters" failed to apply to 6.6-stable tree

[gregkh]

The patch below does not apply to the 6.6-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-6.6.y
git checkout FETCH_HEAD
git cherry-pick -x 659f5d55feb75782bd46cf130da3c1f240afe9ba
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<stable@vger.kernel.org>' --in-reply-to '2025021849-tree-erased-b30b@gregkh' --subject-prefix 'PATCH 6.6.y' HEAD^..

Possible dependencies:



thanks,

greg k-h

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

From 659f5d55feb75782bd46cf130da3c1f240afe9ba Mon Sep 17 00:00:00 2001
From: Jos Wang <joswang@lenovo.com>
Date: Thu, 13 Feb 2025 21:49:21 +0800
Subject: [PATCH] usb: typec: tcpm: PSSourceOffTimer timeout in PR_Swap enters
 ERROR_RECOVERY
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

As PD2.0 spec ("6.5.6.2 PSSourceOffTimer")，the PSSourceOffTimer is
used by the Policy Engine in Dual-Role Power device that is currently
acting as a Sink to timeout on a PS_RDY Message during a Power Role
Swap sequence. This condition leads to a Hard Reset for USB Type-A and
Type-B Plugs and Error Recovery for Type-C plugs and return to USB
Default Operation.

Therefore, after PSSourceOffTimer timeout, the tcpm state machine should
switch from PR_SWAP_SNK_SRC_SINK_OFF to ERROR_RECOVERY. This can also
solve the test items in the USB power delivery compliance test:
TEST.PD.PROT.SNK.12 PR_Swap – PSSourceOffTimer Timeout

[1] https://usb.org/document-library/usb-power-delivery-compliance-test-specification-0/USB_PD3_CTS_Q4_2025_OR.zip

Fixes: f0690a25a140 ("staging: typec: USB Type-C Port Manager (tcpm)")
Cc: stable <stable@kernel.org>
Signed-off-by: Jos Wang <joswang@lenovo.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Tested-by: Amit Sunil Dhamne <amitsd@google.com>
Link: https://lore.kernel.org/r/20250213134921.3798-1-joswang1221@gmail.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 47be450d2be3..6bf1a22c785a 100644
--- a/drivers/usb/typec/tcpm/tcpm.c
+++ b/drivers/usb/typec/tcpm/tcpm.c
@@ -5591,8 +5591,7 @@ static void run_state_machine(struct tcpm_port *port)
 		tcpm_set_auto_vbus_discharge_threshold(port, TYPEC_PWR_MODE_USB,
 						       port->pps_data.active, 0);
 		tcpm_set_charge(port, false);
-		tcpm_set_state(port, hard_reset_state(port),
-			       port->timings.ps_src_off_time);
+		tcpm_set_state(port, ERROR_RECOVERY, port->timings.ps_src_off_time);
 		break;
 	case PR_SWAP_SNK_SRC_SOURCE_ON:
 		tcpm_enable_auto_vbus_discharge(port, true);