diff options
Diffstat (limited to 'include/linux/usb.h')
| -rw-r--r-- | include/linux/usb.h | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/include/linux/usb.h b/include/linux/usb.h index 30d1ae38eab1..ff8ef2d28589 100644 --- a/include/linux/usb.h +++ b/include/linux/usb.h @@ -469,7 +469,6 @@ struct usb3_lpm_parameters { * access from userspace * @usbfs_dentry: usbfs dentry entry for the device * @maxchild: number of ports if hub - * @children: child devices - USB devices that are attached to this hub * @quirks: quirks of the whole device * @urbnum: number of URBs submitted for the whole device * @active_duration: total time device is not suspended @@ -543,7 +542,6 @@ struct usb_device { struct list_head filelist; int maxchild; - struct usb_device **children; u32 quirks; atomic_t urbnum; @@ -572,6 +570,19 @@ static inline struct usb_device *interface_to_usbdev(struct usb_interface *intf) extern struct usb_device *usb_get_dev(struct usb_device *dev); extern void usb_put_dev(struct usb_device *dev); +extern struct usb_device *usb_hub_find_child(struct usb_device *hdev, + int port1); + +/** + * usb_hub_for_each_child - iterate over all child devices on the hub + * @hdev: USB device belonging to the usb hub + * @port1: portnum associated with child device + * @child: child device pointer + */ +#define usb_hub_for_each_child(hdev, port1, child) \ + for (port1 = 1, child = usb_hub_find_child(hdev, port1); \ + port1 <= hdev->maxchild; \ + child = usb_hub_find_child(hdev, ++port1)) /* USB device locking */ #define usb_lock_device(udev) device_lock(&(udev)->dev) |