From: pumahsu <pumahsu@xxxxxxxxxx>
PD 3.0 spec 8.3.3.2.3, A Get_Source_Cap message is sent
to a UUT that is in the PE_SRC_Ready state. After sending
a Source_Capabilities message, the UUT should then expect
a Request message in response. When one is not received,
the UUT should timeout to PE_SRC_Hard_Reset.
Cc: Guenter Roeck <linux@xxxxxxxxxxxx>
Cc: Heikki Krogerus <heikki.krogerus@xxxxxxxxxxxxxxx>
Cc: Badhri Jagan Sridharan <badhri@xxxxxxxxxx>
Signed-off-by: pumahsu <pumahsu@xxxxxxxxxx>
Signed-off-by: Kyle Tso <kyletso@xxxxxxxxxx>
Signed-off-by: Will McVicker <willmcvicker@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/usb/typec/tcpm/tcpm.c | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/typec/tcpm/tcpm.c b/drivers/usb/typec/tcpm/tcpm.c
index 0ceeab50ed64..0efda59bb104 100644
--- a/drivers/usb/typec/tcpm/tcpm.c
+++ b/drivers/usb/typec/tcpm/tcpm.c
@@ -2218,6 +2218,7 @@ static int tcpm_pd_send_control(struct tcpm_port *port,
static bool tcpm_send_queued_message(struct tcpm_port *port)
{
enum pd_msg_request queued_message;
+ int ret;
do {
queued_message = port->queued_message;
@@ -2237,7 +2238,16 @@ static bool tcpm_send_queued_message(struct tcpm_port *port)
tcpm_pd_send_sink_caps(port);
break;
case PD_MSG_DATA_SOURCE_CAP:
- tcpm_pd_send_source_caps(port);
+ ret = tcpm_pd_send_source_caps(port);
+ if (ret < 0) {
+ tcpm_log(port,
+ "Unable to send src caps, ret=%d",
+ ret);
+ tcpm_set_state(port, SOFT_RESET_SEND, 0);
+ } else if (port->pwr_role == TYPEC_SOURCE) {
+ tcpm_set_state(port, HARD_RESET_SEND,
+ PD_T_SENDER_RESPONSE);
+ }
break;
default:
break;
--
2.29.2
