1 files changed, 43 insertions, 0 deletions

diff --git a/drivers/usb/core/port.c b/drivers/usb/core/port.c
index 3734850120ae..fe5959fc021b 100644
--- a/drivers/usb/core/port.c
+++ b/drivers/usb/core/port.c
@@ -20,6 +20,48 @@
 
 #include "hub.h"
 
+static const struct attribute_group *port_dev_group[];
+
+static ssize_t show_port_connect_type(struct device *dev,
+        struct device_attribute *attr, char *buf)
+{
+        struct usb_port *port_dev = to_usb_port(dev);
+        char *result;
+
+        switch (port_dev->connect_type) {
+        case USB_PORT_CONNECT_TYPE_HOT_PLUG:
+                result = "hotplug";
+                break;
+        case USB_PORT_CONNECT_TYPE_HARD_WIRED:
+                result = "hardwired";
+                break;
+        case USB_PORT_NOT_USED:
+                result = "not used";
+                break;
+        default:
+                result = "unknown";
+                break;
+        }
+
+        return sprintf(buf, "%s\n", result);
+}
+static DEVICE_ATTR(connect_type, S_IRUGO, show_port_connect_type,
+                NULL);
+
+static struct attribute *port_dev_attrs[] = {
+        &dev_attr_connect_type.attr,
+        NULL,
+};
+
+static struct attribute_group port_dev_attr_grp = {
+        .attrs = port_dev_attrs,
+};
+
+static const struct attribute_group *port_dev_group[] = {
+        &port_dev_attr_grp,
+        NULL,
+};
+
 static void usb_port_device_release(struct device *dev)
 {
         struct usb_port *port_dev = to_usb_port(dev);
@@ -45,6 +87,7 @@ int usb_hub_create_port_device(struct usb_hub *hub, int port1)
 
         hub->ports[port1 - 1] = port_dev;
         port_dev->dev.parent = hub->intfdev;
+        port_dev->dev.groups = port_dev_group;
         port_dev->dev.type = &usb_port_device_type;
         dev_set_name(&port_dev->dev, "port%d", port1);