usb: Add support for indicating whether a port is removable
Userspace may want to make policy decisions based on whether or not a
given USB device is removable. Add a per-device member and support
for exposing it in sysfs. Information sources to populate it will be
added later.
Signed-off-by: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/include/linux/usb.h b/include/linux/usb.h
index 27a4e16..b2eb3a4 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -376,6 +376,12 @@
struct usb_tt;
+enum usb_device_removable {
+ USB_DEVICE_REMOVABLE_UNKNOWN = 0,
+ USB_DEVICE_REMOVABLE,
+ USB_DEVICE_FIXED,
+};
+
/**
* struct usb_device - kernel's representation of a USB device
* @devnum: device number; address on a USB bus
@@ -432,6 +438,7 @@
* @wusb_dev: if this is a Wireless USB device, link to the WUSB
* specific data for the device.
* @slot_id: Slot ID assigned by xHCI
+ * @removable: Device can be physically removed from this port
*
* Notes:
* Usbcore drivers should not set usbdev->state directly. Instead use
@@ -509,6 +516,7 @@
#endif
struct wusb_dev *wusb_dev;
int slot_id;
+ enum usb_device_removable removable;
};
#define to_usb_device(d) container_of(d, struct usb_device, dev)