diff options
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/core/usb.c | 37 |
1 files changed, 0 insertions, 37 deletions
diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c index 8180ce533eb..902f821d8d1 100644 --- a/drivers/usb/core/usb.c +++ b/drivers/usb/core/usb.c @@ -627,43 +627,6 @@ exit: } /** - * usb_find_device - find a specific usb device in the system - * @vendor_id: the vendor id of the device to find - * @product_id: the product id of the device to find - * - * Returns a pointer to a struct usb_device if such a specified usb - * device is present in the system currently. The usage count of the - * device will be incremented if a device is found. Make sure to call - * usb_put_dev() when the caller is finished with the device. - * - * If a device with the specified vendor and product id is not found, - * NULL is returned. - */ -struct usb_device *usb_find_device(u16 vendor_id, u16 product_id) -{ - struct list_head *buslist; - struct usb_bus *bus; - struct usb_device *dev = NULL; - - mutex_lock(&usb_bus_list_lock); - for (buslist = usb_bus_list.next; - buslist != &usb_bus_list; - buslist = buslist->next) { - bus = container_of(buslist, struct usb_bus, bus_list); - if (!bus->root_hub) - continue; - usb_lock_device(bus->root_hub); - dev = match_device(bus->root_hub, vendor_id, product_id); - usb_unlock_device(bus->root_hub); - if (dev) - goto exit; - } -exit: - mutex_unlock(&usb_bus_list_lock); - return dev; -} - -/** * usb_get_current_frame_number - return current bus frame number * @dev: the device whose bus is being queried * |