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usb: typec: class: Don't use port parent for getting mux handles

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commit 23481121c81d984193edf1532f5e123637e50903 upstream.

It is not possible to use the parent of the port device when
requesting mux handles as the parent may be a multiport USB
Type-C or PD controller. The muxes must be assigned to the
ports, not the controllers.

This will also move the requesting of the muxes after the
port device is initialized.

Acked-by: Hans de Goede <hdegoede@redhat.com>
Tested-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Heikki Krogerus 2018-09-20 14:23:44 +03:00 • committed by Greg Kroah-Hartman
parent 6875404a12
commit 056cda45cf
1 changed files with 15 additions and 23 deletions

38
drivers/usb/typec/class.c
View file

@ -1500,7 +1500,7 @@ typec_port_register_altmode(struct typec_port *port,
sprintf(id, "id%04xm%02x", desc->svid, desc->mode);
mux = typec_mux_get(port->dev.parent, id);
mux = typec_mux_get(&port->dev, id);
if (IS_ERR(mux))
return ERR_CAST(mux);
@ -1540,18 +1540,6 @@ struct typec_port *typec_register_port(struct device *parent,
return ERR_PTR(id);
}
port->sw = typec_switch_get(cap->fwnode ? &port->dev : parent);
if (IS_ERR(port->sw)) {
ret = PTR_ERR(port->sw);
goto err_switch;
}
port->mux = typec_mux_get(parent, "typec-mux");
if (IS_ERR(port->mux)) {
ret = PTR_ERR(port->mux);
goto err_mux;
}
switch (cap->type) {
case TYPEC_PORT_SRC:
port->pwr_role = TYPEC_SOURCE;
@ -1592,13 +1580,26 @@ struct typec_port *typec_register_port(struct device *parent,
port->port_type = cap->type;
port->prefer_role = cap->prefer_role;
device_initialize(&port->dev);
port->dev.class = typec_class;
port->dev.parent = parent;
port->dev.fwnode = cap->fwnode;
port->dev.type = &typec_port_dev_type;
dev_set_name(&port->dev, "port%d", id);
ret = device_register(&port->dev);
port->sw = typec_switch_get(&port->dev);
if (IS_ERR(port->sw)) {
put_device(&port->dev);
return ERR_CAST(port->sw);
}
port->mux = typec_mux_get(&port->dev, "typec-mux");
if (IS_ERR(port->mux)) {
put_device(&port->dev);
return ERR_CAST(port->mux);
}
ret = device_add(&port->dev);
if (ret) {
dev_err(parent, "failed to register port (%d)\n", ret);
put_device(&port->dev);
@ -1606,15 +1607,6 @@ struct typec_port *typec_register_port(struct device *parent,
}
return port;
err_mux:
typec_switch_put(port->sw);
err_switch:
ida_simple_remove(&typec_index_ida, port->id);
kfree(port);
return ERR_PTR(ret);
}
EXPORT_SYMBOL_GPL(typec_register_port);