[PATCH 5.4 38/60] usb: typec: tcpm: Invoke power_supply_changed for tcpm-source-psy-

[Greg Kroah-Hartman]

From: Badhri Jagan Sridharan <bad...@google.com>

commit 86629e098a077922438efa98dc80917604dfd317 upstream.

tcpm-source-psy- does not invoke power_supply_changed API when
one of the published power supply properties is changed.
power_supply_changed needs to be called to notify
userspace clients(uevents) and kernel clients.

Fixes: f2a8aa053c176 ("typec: tcpm: Represent source supply through 
power_supply")
Reviewed-by: Guenter Roeck <li...@roeck-us.net>
Reviewed-by: Heikki Krogerus <heikki.kroge...@linux.intel.com>
Signed-off-by: Badhri Jagan Sridharan <bad...@google.com>
Cc: stable <sta...@vger.kernel.org>
Link: https://lore.kernel.org/r/20210317181249.1062995-1-bad...@google.com
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
 drivers/usb/typec/tcpm/tcpm.c |    8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

--- a/drivers/usb/typec/tcpm/tcpm.c
+++ b/drivers/usb/typec/tcpm/tcpm.c
@@ -739,6 +739,7 @@ static int tcpm_set_current_limit(struct
 
        port->supply_voltage = mv;
        port->current_limit = max_ma;
+       power_supply_changed(port->psy);
 
        if (port->tcpc->set_current_limit)
                ret = port->tcpc->set_current_limit(port->tcpc, max_ma, mv);
@@ -2138,6 +2139,7 @@ static int tcpm_pd_select_pdo(struct tcp
 
        port->pps_data.supported = false;
        port->usb_type = POWER_SUPPLY_USB_TYPE_PD;
+       power_supply_changed(port->psy);
 
        /*
         * Select the source PDO providing the most power which has a
@@ -2162,6 +2164,7 @@ static int tcpm_pd_select_pdo(struct tcp
                                port->pps_data.supported = true;
                                port->usb_type =
                                        POWER_SUPPLY_USB_TYPE_PD_PPS;
+                               power_supply_changed(port->psy);
                        }
                        continue;
                default:
@@ -2319,6 +2322,7 @@ static unsigned int tcpm_pd_select_pps_a
                                                  port->pps_data.out_volt));
                port->pps_data.op_curr = min(port->pps_data.max_curr,
                                             port->pps_data.op_curr);
+               power_supply_changed(port->psy);
        }
 
        return src_pdo;
@@ -2554,6 +2558,7 @@ static int tcpm_set_charge(struct tcpm_p
                        return ret;
        }
        port->vbus_charge = charge;
+       power_supply_changed(port->psy);
        return 0;
 }
 
@@ -4665,7 +4670,7 @@ static int tcpm_psy_set_prop(struct powe
                ret = -EINVAL;
                break;
        }
-
+       power_supply_changed(port->psy);
        return ret;
 }
 
@@ -4816,6 +4821,7 @@ struct tcpm_port *tcpm_register_port(str
        err = devm_tcpm_psy_register(port);
        if (err)
                goto out_role_sw_put;
+       power_supply_changed(port->psy);
 
        port->typec_port = typec_register_port(port->dev, &port->typec_caps);
        if (IS_ERR(port->typec_port)) {