linux-kernel - [PATCH 1/1] usb: typec: tcpm: set SRC_SEND_CAPABILITIES timeout to PD_T_SENDER

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Message-Id: <20250105135245.7493-1-joswang1221@gmail.com>
Date: Sun,  5 Jan 2025 21:52:45 +0800
From: joswang <joswang1221@...il.com>
To: heikki.krogerus@...ux.intel.com,
	dmitry.baryshkov@...aro.org
Cc: gregkh@...uxfoundation.org,
	linux-usb@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Jos Wang <joswang@...ovo.com>,
	stable@...r.kernel.org
Subject: [PATCH 1/1] usb: typec: tcpm: set SRC_SEND_CAPABILITIES timeout to PD_T_SENDER_RESPONSE

From: Jos Wang <joswang@...ovo.com>

As PD2.0 spec ("8.3.3.2.3 PE_SRC_Send_Capabilities state"), after the
Source receives the GoodCRC Message from the Sink in response to the
Source_Capabilities message, it should start the SenderResponseTimer,
after the timer times out, the state machine transitions to the
HARD_RESET state.

Fixes: f0690a25a140 ("staging: typec: USB Type-C Port Manager (tcpm)")
Cc: stable@...r.kernel.org
Signed-off-by: Jos Wang <joswang@...ovo.com>
---
 drivers/usb/typec/tcpm/tcpm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/typec/tcpm/tcpm.c b/drivers/usb/typec/tcpm/tcpm.c
index 460dbde9fe22..57fae1118ac9 100644
--- a/drivers/usb/typec/tcpm/tcpm.c
+++ b/drivers/usb/typec/tcpm/tcpm.c
@@ -4821,7 +4821,7 @@ static void run_state_machine(struct tcpm_port *port)
 			port->caps_count = 0;
 			port->pd_capable = true;
 			tcpm_set_state_cond(port, SRC_SEND_CAPABILITIES_TIMEOUT,
-					    PD_T_SEND_SOURCE_CAP);
+					    PD_T_SENDER_RESPONSE);
 		}
 		break;
 	case SRC_SEND_CAPABILITIES_TIMEOUT:
-- 
2.17.1