From: Badhri Jagan Sridharan <badhri@google.com>
To: gregkh@linuxfoundation.org, linux@roeck-us.net,
heikki.krogerus@linux.intel.com
Cc: kyletso@google.com, linux-usb@vger.kernel.org,
linux-kernel@vger.kernel.org, rdbabiera@google.com,
amitsd@google.com, stable@vger.kernel.org,
Badhri Jagan Sridharan <badhri@google.com>
Subject: [PATCH v1] usb: typec: tcpm: Skip hard reset when in error recovery
Date: Wed, 1 Nov 2023 02:19:09 +0000 [thread overview]
Message-ID: <20231101021909.2962679-1-badhri@google.com> (raw)
Hard reset queued prior to error recovery (or) received during
error recovery will make TCPM to prematurely exit error recovery
sequence. Ignore hard resets received during error recovery (or)
port reset sequence.
```
[46505.459688] state change SNK_READY -> ERROR_RECOVERY [rev3 NONE_AMS]
[46505.459706] state change ERROR_RECOVERY -> PORT_RESET [rev3 NONE_AMS]
[46505.460433] disable vbus discharge ret:0
[46505.461226] Setting usb_comm capable false
[46505.467244] Setting voltage/current limit 0 mV 0 mA
[46505.467262] polarity 0
[46505.470695] Requesting mux state 0, usb-role 0, orientation 0
[46505.475621] cc:=0
[46505.476012] pending state change PORT_RESET -> PORT_RESET_WAIT_OFF @ 100 ms [rev3 NONE_AMS]
[46505.476020] Received hard reset
[46505.476024] state change PORT_RESET -> HARD_RESET_START [rev3 HARD_RESET]
```
Cc: stable@vger.kernel.org
Fixes: f0690a25a140 ("staging: typec: USB Type-C Port Manager (tcpm)")
Signed-off-by: Badhri Jagan Sridharan <badhri@google.com>
---
drivers/usb/typec/tcpm/tcpm.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/drivers/usb/typec/tcpm/tcpm.c b/drivers/usb/typec/tcpm/tcpm.c
index 058d5b853b57..b386102f7a3a 100644
--- a/drivers/usb/typec/tcpm/tcpm.c
+++ b/drivers/usb/typec/tcpm/tcpm.c
@@ -5391,6 +5391,15 @@ static void _tcpm_pd_hard_reset(struct tcpm_port *port)
if (port->bist_request == BDO_MODE_TESTDATA && port->tcpc->set_bist_data)
port->tcpc->set_bist_data(port->tcpc, false);
+ switch (port->state) {
+ case ERROR_RECOVERY:
+ case PORT_RESET:
+ case PORT_RESET_WAIT_OFF:
+ return;
+ default:
+ break;
+ }
+
if (port->ams != NONE_AMS)
port->ams = NONE_AMS;
if (port->hard_reset_count < PD_N_HARD_RESET_COUNT)
base-commit: c70793fb7632a153862ee9060e6d48131469a29c
--
2.42.0.820.g83a721a137-goog
next reply other threads:[~2023-11-01 2:19 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-01 2:19 Badhri Jagan Sridharan [this message]
2023-11-08 7:33 ` [PATCH v1] usb: typec: tcpm: Skip hard reset when in error recovery Heikki Krogerus
2023-11-08 18:41 ` Guenter Roeck
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20231101021909.2962679-1-badhri@google.com \
--to=badhri@google.com \
--cc=amitsd@google.com \
--cc=gregkh@linuxfoundation.org \
--cc=heikki.krogerus@linux.intel.com \
--cc=kyletso@google.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-usb@vger.kernel.org \
--cc=linux@roeck-us.net \
--cc=rdbabiera@google.com \
--cc=stable@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.