From: Guenter Roeck <linux@roeck-us.net>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: heikki.krogerus@linux.intel.com, linux-usb@vger.kernel.org,
linux-kernel@vger.kernel.org, pumahsu <pumahsu@google.com>,
Badhri Jagan Sridharan <badhri@google.com>,
Kyle Tso <kyletso@google.com>,
Will McVicker <willmcvicker@google.com>
Subject: Re: [PATCH 2/5] USB: typec: tcpm: Hard Reset after not receiving a Request
Date: Thu, 10 Dec 2020 09:43:26 -0800 [thread overview]
Message-ID: <20201210174326.GC107395@roeck-us.net> (raw)
In-Reply-To: <20201210160521.3417426-3-gregkh@linuxfoundation.org>
On Thu, Dec 10, 2020 at 05:05:18PM +0100, Greg Kroah-Hartman wrote:
> From: pumahsu <pumahsu@google.com>
>
> 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@roeck-us.net>
> Cc: Heikki Krogerus <heikki.krogerus@linux.intel.com>
> Cc: Badhri Jagan Sridharan <badhri@google.com>
> Signed-off-by: pumahsu <pumahsu@google.com>
> Signed-off-by: Kyle Tso <kyletso@google.com>
> Signed-off-by: Will McVicker <willmcvicker@google.com>
> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
> ---
> 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
>
next prev parent reply other threads:[~2020-12-10 17:44 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-10 16:05 [PATCH 0/5] USB: typec: various patches Greg Kroah-Hartman
2020-12-10 16:05 ` [PATCH 1/5] USB: typec: tcpm: Prevent log overflow by removing old entries Greg Kroah-Hartman
2020-12-10 17:42 ` Guenter Roeck
2020-12-10 19:10 ` Badhri Jagan Sridharan
2020-12-11 0:01 ` Guenter Roeck
2020-12-10 16:05 ` [PATCH 2/5] USB: typec: tcpm: Hard Reset after not receiving a Request Greg Kroah-Hartman
2020-12-10 17:43 ` Guenter Roeck [this message]
2020-12-10 16:05 ` [PATCH 3/5] USB: typec: tcpm: Fix PR_SWAP error handling Greg Kroah-Hartman
2020-12-10 17:43 ` Guenter Roeck
2020-12-10 16:05 ` [PATCH 4/5] USB: typec: tcpm: Add a 30ms room for tPSSourceOn in PR_SWAP Greg Kroah-Hartman
2020-12-10 17:44 ` Guenter Roeck
2020-12-10 16:05 ` [PATCH 5/5] USB: typec: tcpci: Add Bleed discharge to POWER_CONTROL definition Greg Kroah-Hartman
2020-12-10 17:45 ` Guenter Roeck
2020-12-10 18:56 ` Badhri Jagan Sridharan
2020-12-11 4:47 ` Badhri Jagan Sridharan
2020-12-11 6:38 ` Greg Kroah-Hartman
2020-12-11 8:30 ` [PATCH 0/5] USB: typec: various patches Heikki Krogerus
2020-12-11 9:51 ` Greg Kroah-Hartman
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