diff options
| -rw-r--r-- | drivers/usb/core/hub.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index f6ff1302f343..cfdd4eecc5a9 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -1989,6 +1989,14 @@ void usb_disconnect(struct usb_device **pdev) usb_disable_device(udev, 0); usb_hcd_synchronize_unlinks(udev); + if (udev->parent) { + struct usb_port *port_dev = + hdev_to_hub(udev->parent)->ports[udev->portnum - 1]; + + sysfs_remove_link(&udev->dev.kobj, "port"); + sysfs_remove_link(&port_dev->dev.kobj, "device"); + } + usb_remove_ep_devs(&udev->ep0); usb_unlock_device(udev); @@ -2281,6 +2289,24 @@ int usb_new_device(struct usb_device *udev) goto fail; } + /* Create link files between child device and usb port device. */ + if (udev->parent) { + struct usb_port *port_dev = + hdev_to_hub(udev->parent)->ports[udev->portnum - 1]; + + err = sysfs_create_link(&udev->dev.kobj, + &port_dev->dev.kobj, "port"); + if (err) + goto fail; + + err = sysfs_create_link(&port_dev->dev.kobj, + &udev->dev.kobj, "device"); + if (err) { + sysfs_remove_link(&udev->dev.kobj, "port"); + goto fail; + } + } + (void) usb_create_ep_devs(&udev->dev, &udev->ep0, udev); usb_mark_last_busy(udev); pm_runtime_put_sync_autosuspend(&udev->dev); |