When the port does not support USB PD, prevent transition to PD only states when power supply property is written. In this case, TCPM transitions to SNK_NEGOTIATE_CAPABILITIES which should not be the case given that the port is not pd_capable.
[ 84.308251] state change SNK_READY -> SNK_NEGOTIATE_CAPABILITIES [rev3 NONE_AMS] [ 84.308335] Setting usb_comm capable false [ 84.323367] set_auto_vbus_discharge_threshold mode:3 pps_active:n vbus:5000 ret:0 [ 84.323376] state change SNK_NEGOTIATE_CAPABILITIES -> SNK_WAIT_CAPABILITIES [rev3 NONE_AMS]
Fixes: e9e6e164ed8f6 ("usb: typec: tcpm: Support non-PD mode") Cc: stable@vger.kernel.org Signed-off-by: Badhri Jagan Sridharan badhri@google.com --- Changes since v1: - Add Fixes tag. Changes since v2: - CCed stable --- drivers/usb/typec/tcpm/tcpm.c | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/drivers/usb/typec/tcpm/tcpm.c b/drivers/usb/typec/tcpm/tcpm.c index ea5a917c51b1..904c7b4ce2f0 100644 --- a/drivers/usb/typec/tcpm/tcpm.c +++ b/drivers/usb/typec/tcpm/tcpm.c @@ -6320,6 +6320,13 @@ static int tcpm_psy_set_prop(struct power_supply *psy, struct tcpm_port *port = power_supply_get_drvdata(psy); int ret;
+ /* + * All the properties below are related to USB PD. The check needs to be + * property specific when a non-pd related property is added. + */ + if (!port->pd_supported) + return -EOPNOTSUPP; + switch (psp) { case POWER_SUPPLY_PROP_ONLINE: ret = tcpm_psy_set_online(port, val);
On Wed, Aug 17, 2022 at 02:54:10PM -0700, Badhri Jagan Sridharan wrote:
When the port does not support USB PD, prevent transition to PD only states when power supply property is written. In this case, TCPM transitions to SNK_NEGOTIATE_CAPABILITIES which should not be the case given that the port is not pd_capable.
[ 84.308251] state change SNK_READY -> SNK_NEGOTIATE_CAPABILITIES [rev3 NONE_AMS] [ 84.308335] Setting usb_comm capable false [ 84.323367] set_auto_vbus_discharge_threshold mode:3 pps_active:n vbus:5000 ret:0 [ 84.323376] state change SNK_NEGOTIATE_CAPABILITIES -> SNK_WAIT_CAPABILITIES [rev3 NONE_AMS]
Fixes: e9e6e164ed8f6 ("usb: typec: tcpm: Support non-PD mode") Cc: stable@vger.kernel.org Signed-off-by: Badhri Jagan Sridharan badhri@google.com
Reviewed-by: Heikki Krogerus heikki.krogerus@linux.intel.com
Changes since v1:
- Add Fixes tag.
Changes since v2:
- CCed stable
drivers/usb/typec/tcpm/tcpm.c | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/drivers/usb/typec/tcpm/tcpm.c b/drivers/usb/typec/tcpm/tcpm.c index ea5a917c51b1..904c7b4ce2f0 100644 --- a/drivers/usb/typec/tcpm/tcpm.c +++ b/drivers/usb/typec/tcpm/tcpm.c @@ -6320,6 +6320,13 @@ static int tcpm_psy_set_prop(struct power_supply *psy, struct tcpm_port *port = power_supply_get_drvdata(psy); int ret;
- /*
* All the properties below are related to USB PD. The check needs to be* property specific when a non-pd related property is added.*/- if (!port->pd_supported)
return -EOPNOTSUPP;- switch (psp) { case POWER_SUPPLY_PROP_ONLINE: ret = tcpm_psy_set_online(port, val);
-- 2.37.1.595.g718a3a8f04-goog
linux-stable-mirror@lists.linaro.org
-
Badhri Jagan Sridharan -
Heikki Krogerus