diff options
| -rw-r--r-- | common/usb_pd_protocol.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/common/usb_pd_protocol.c b/common/usb_pd_protocol.c index ae70ffb72b..039ef9dc23 100644 --- a/common/usb_pd_protocol.c +++ b/common/usb_pd_protocol.c @@ -884,6 +884,13 @@ static int pd_transmit(int port, enum tcpm_transmit_type type, /* If comms are disabled, do not transmit, return error */ if (!pd_comm_is_enabled(port)) return -1; + + /* Don't try to transmit anything until we have processed + * all RX messages. + */ + if (tcpm_has_pending_message(port)) + return -1; + #ifdef CONFIG_USB_PD_REV30 /* Source-coordinated collision avoidance */ /* |