[net-next v2] wwan: core: add print for wwan port attach/disconnect

[Slark Xiao]

Refer to USB serial device or net device, there is a notice to
let end user know the status of device, like attached or
disconnected. Add attach/disconnect print for wwan device as
well.

Signed-off-by: Slark Xiao <slark_xiao@xxxxxxx>
---

v2: Use dev_name() instead of kobj item and make print neat.
---
 drivers/net/wwan/wwan_core.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/net/wwan/wwan_core.c b/drivers/net/wwan/wwan_core.c
index 2e1c01cf00a9..aa54fa6d5f90 100644
--- a/drivers/net/wwan/wwan_core.c
+++ b/drivers/net/wwan/wwan_core.c
@@ -492,6 +492,7 @@ struct wwan_port *wwan_create_port(struct device *parent,
 	if (err)
 		goto error_put_device;
 
+	dev_info(&wwandev->dev, "port %s attached\n", dev_name(&port->dev));
 	return port;
 
 error_put_device:
@@ -517,6 +518,8 @@ void wwan_remove_port(struct wwan_port *port)
 
 	skb_queue_purge(&port->rxq);
 	dev_set_drvdata(&port->dev, NULL);
+
+	dev_info(&wwandev->dev, "port %s disconnected\n", dev_name(&port->dev));
 	device_unregister(&port->dev);
 
 	/* Release related wwan device */
-- 
2.34.1