USB: remove match_device

usb_find_device was the only one user of match_device, now
it is removed, so remove match_device to fix the compile warning
below reported by Stephen Rothwell:

	drivers/usb/core/usb.c:596: warning: 'match_device'
	defined but not used

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 0 insertions, 33 deletions

diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c
index 902f821d8d14..397b678f1c47 100644
--- a/drivers/usb/core/usb.c
+++ b/drivers/usb/core/usb.c
@@ -593,39 +593,6 @@ int usb_lock_device_for_reset(struct usb_device *udev,
 }
 EXPORT_SYMBOL_GPL(usb_lock_device_for_reset);
 
-static struct usb_device *match_device(struct usb_device *dev,
-                                       u16 vendor_id, u16 product_id)
-{
-        struct usb_device *ret_dev = NULL;
-        int child;
-
-        dev_dbg(&dev->dev, "check for vendor %04x, product %04x ...\n",
-            le16_to_cpu(dev->descriptor.idVendor),
-            le16_to_cpu(dev->descriptor.idProduct));
-
-        /* see if this device matches */
-        if ((vendor_id == le16_to_cpu(dev->descriptor.idVendor)) &&
-            (product_id == le16_to_cpu(dev->descriptor.idProduct))) {
-                dev_dbg(&dev->dev, "matched this device!\n");
-                ret_dev = usb_get_dev(dev);
-                goto exit;
-        }
-
-        /* look through all of the children of this device */
-        for (child = 0; child < dev->maxchild; ++child) {
-                if (dev->children[child]) {
-                        usb_lock_device(dev->children[child]);
-                        ret_dev = match_device(dev->children[child],
-                                               vendor_id, product_id);
-                        usb_unlock_device(dev->children[child]);
-                        if (ret_dev)
-                                goto exit;
-                }
-        }
-exit:
-        return ret_dev;
-}
-
 /**
  * usb_get_current_frame_number - return current bus frame number
  * @dev: the device whose bus is being queried