diff options
| -rw-r--r-- | drivers/usb/core/hub.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index a0613d8..2d773cb 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -1838,6 +1838,37 @@ fail: return err; } +static void set_usb_port_removable(struct usb_device *udev) +{ + struct usb_device *hdev = udev->parent; + struct usb_hub *hub; + u8 port = udev->portnum; + u16 wHubCharacteristics; + bool removable = true; + + if (!hdev) + return; + + hub = hdev_to_hub(udev->parent); + + wHubCharacteristics = le16_to_cpu(hub->descriptor->wHubCharacteristics); + + if (!(wHubCharacteristics & HUB_CHAR_COMPOUND)) + return; + + if (hub_is_superspeed(hdev)) { + if (hub->descriptor->u.ss.DeviceRemovable & (1 << port)) + removable = false; + } else { + if (hub->descriptor->u.hs.DeviceRemovable[port / 8] & (1 << (port % 8))) + removable = false; + } + + if (removable) + udev->removable = USB_DEVICE_REMOVABLE; + else + udev->removable = USB_DEVICE_FIXED; +} /** * usb_new_device - perform initial device setup (usbcore-internal) @@ -1896,6 +1927,15 @@ int usb_new_device(struct usb_device *udev) announce_device(udev); device_enable_async_suspend(&udev->dev); + + /* + * check whether the hub marks this port as non-removable. Do it + * now so that platform-specific data can override it in + * device_add() + */ + if (udev->parent) + set_usb_port_removable(udev); + /* Register the device. The device driver is responsible * for configuring the device and invoking the add-device * notifier chain (used by usbfs and possibly others). |