Merge tag 'usb-3.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB patches from Greg Kroah-Hartman:
 "Here's the big set of USB patches for 3.8-rc1.

  Lots of USB host driver cleanups in here, and a bit of a reorg of the
  EHCI driver to make it easier for the different EHCI platform drivers
  to all work together nicer, which was a reduction in overall code.  We
  also deleted some unused firmware files, and got rid of the very old
  file_storage usb gadget driver that had been broken for a long time.
  This means we ended up removing way more code than added, always a
  nice thing to see:
	 310 files changed, 3028 insertions(+), 10754 deletions(-)

  Other than that, the usual set of new device ids, driver fixes, gadget
  driver and controller updates and the like.

  All of these have been in the linux-next tree for a number of weeks.

  Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>"

* tag 'usb-3.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (228 commits)
  USB: mark uas driver as BROKEN
  xhci: Add Lynx Point LP to list of Intel switchable hosts
  uwb: fix uwb_dev_unlock() missed at an error path in uwb_rc_cmd_async()
  USB: ftdi_sio: Add support for Newport AGILIS motor drivers
  MAINTAINERS: remove drivers/block/ub.c
  USB: chipidea: fix use after free bug
  ezusb: add dependency to USB
  usb: ftdi_sio: fixup BeagleBone A5+ quirk
  USB: cp210x: add Virtenio Preon32 device id
  usb: storage: remove redundant memset() in usb_probe_stor1()
  USB: option: blacklist network interface on Huawei E173
  USB: OHCI: workaround for hardware bug: retired TDs not added to the Done Queue
  USB: add new zte 3g-dongle's pid to option.c
  USB: opticon: switch to generic read implementation
  USB: opticon: refactor reab-urb processing
  USB: opticon: use usb-serial bulk-in urb
  USB: opticon: increase bulk-in size
  USB: opticon: use port as urb context
  USB: opticon: pass port to get_serial_info
  USB: opticon: make private data port specific
  ...

1 files changed, 8 insertions, 10 deletions

diff --git a/drivers/usb/core/devices.c b/drivers/usb/core/devices.c
index f460de31ace..cbacea933b1 100644
--- a/drivers/usb/core/devices.c
+++ b/drivers/usb/core/devices.c
@@ -591,16 +591,14 @@ static ssize_t usb_device_dump(char __user **buffer, size_t *nbytes,
 
 	/* Now look at all of this device's children. */
 	usb_hub_for_each_child(usbdev, chix, childdev) {
-		if (childdev) {
-			usb_lock_device(childdev);
-			ret = usb_device_dump(buffer, nbytes, skip_bytes,
-					      file_offset, childdev, bus,
-					      level + 1, chix - 1, ++cnt);
-			usb_unlock_device(childdev);
-			if (ret == -EFAULT)
-				return total_written;
-			total_written += ret;
-		}
+		usb_lock_device(childdev);
+		ret = usb_device_dump(buffer, nbytes, skip_bytes,
+				      file_offset, childdev, bus,
+				      level + 1, chix - 1, ++cnt);
+		usb_unlock_device(childdev);
+		if (ret == -EFAULT)
+			return total_written;
+		total_written += ret;
 	}
 	return total_written;
 }