From: Badhri Jagan Sridharan Date: Mon, 28 Aug 2017 17:23:21 +0000 (-0700) Subject: staging: typec: tcpm: Do not send PING msgs in TCPM X-Git-Tag: v4.14-rc1~148^2~58 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f451ac9e4c6dd2c9ee5397a28a60084fc77f63d7;p=platform%2Fkernel%2Flinux-rpi.git staging: typec: tcpm: Do not send PING msgs in TCPM PING messages are used to monitor the connect/disconnect. However, when PD is carried over CC, so this is not required. Also, the spec does not clearly say if PD is possible when Type-c is connected to Type-A/B. So, removing sending PING messages altogether. Signed-off-by: Badhri Jagan Sridharan Reviewed-by: Guenter Roeck Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/typec/tcpm.c b/drivers/staging/typec/tcpm.c index 36a70989..cbfb1a4 100644 --- a/drivers/staging/typec/tcpm.c +++ b/drivers/staging/typec/tcpm.c @@ -2340,14 +2340,11 @@ static void run_state_machine(struct tcpm_port *port) * - The system is not operating in PD mode * or * - Both partners are connected using a Type-C connector - * XXX How do we know that ? + * + * There is no actual need to send PD messages since the local + * port type-c and the spec does not clearly say whether PD is + * possible when type-c is connected to Type-A/B */ - if (port->pwr_opmode == TYPEC_PWR_MODE_PD && - !port->op_vsafe5v) { - tcpm_pd_send_control(port, PD_CTRL_PING); - tcpm_set_state_cond(port, SRC_READY, - PD_T_SOURCE_ACTIVITY); - } break; case SRC_WAIT_NEW_CAPABILITIES: /* Nothing to do... */