usb: typec: stusb160x: register role switch before interrupt registration

During interrupt registration, attach state is checked. If attached,
then the Type-C state is updated with typec_set_xxx functions and role
switch is set with usb_role_switch_set_role().

If the usb_role_switch parameter is error or null, the function simply
returns 0.

So, to update usb_role_switch role if a device is attached before the
irq is registered, usb_role_switch must be registered before irq
registration.

Fixes: da0cb6310094 ("usb: typec: add support for STUSB160x Type-C controller family")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Amelie Delaunay <amelie.delaunay@foss.st.com>
Link: https://lore.kernel.org/r/20210716120718.20398-2-amelie.delaunay@foss.st.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/typec/stusb160x.c b/drivers/usb/typec/stusb160x.c
index 6eaeba9b096e140884f041c4072b1775e7ad9518..3d3848e7c2c2fe701f1f3540b979f795280058fe 100644 (file)
--- a/drivers/usb/typec/stusb160x.c
+++ b/drivers/usb/typec/stusb160x.c
@@ -739,10 +739,6 @@ static int stusb160x_probe(struct i2c_client *client)
        typec_set_pwr_opmode(chip->port, chip->pwr_opmode);
 
        if (client->irq) {
-               ret = stusb160x_irq_init(chip, client->irq);
-               if (ret)
-                       goto port_unregister;
-
                chip->role_sw = fwnode_usb_role_switch_get(fwnode);
                if (IS_ERR(chip->role_sw)) {
                        ret = PTR_ERR(chip->role_sw);
@@ -752,6 +748,10 @@ static int stusb160x_probe(struct i2c_client *client)
                                        ret);
                        goto port_unregister;
                }
+
+               ret = stusb160x_irq_init(chip, client->irq);
+               if (ret)
+                       goto role_sw_put;
        } else {
                /*
                 * If Source or Dual power role, need to enable VDD supply
@@ -775,6 +775,9 @@ static int stusb160x_probe(struct i2c_client *client)
 
        return 0;
 
+role_sw_put:
+       if (chip->role_sw)
+               usb_role_switch_put(chip->role_sw);
 port_unregister:
        typec_unregister_port(chip->port);
 all_reg_disable: