[RFC 0/8] Allow reset of configured devices under xHCI

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This set of patches allows configured devices to be reset when they are
under an xHCI host controller.  Previously, this was disabled because
the host required a Reset Device command after a USB device was
successfully reset.

The first patch is a bug fix that should be applied to the stable tree.
The next four patches are code refactoring.  The sixth patch adds the
ability to disable a root port under xHCI (which is necessary if a port
reset fails a number of times).  The seventh patch adds the meat of the
Reset Device command to the xHCI driver, and the eighth patch adds
support to the USB core to call down to the driver after a device reset.

Sarah Sharp (8):
  xhci: Fix error path when configuring endpoints.
  xhci: Refactor code to free or cache endpoint rings.
  xhci: Allow allocation of commands without input contexts.
  xhci: Refactor test for vendor-specific completion codes.
  xhci: Refactor code to clear port change bits.
  xhci: Allow roothub ports to be disabled.
  xhci: Notify the xHC when a device is reset.
  USB: Add call to notify xHC of a device reset.

 drivers/usb/core/hcd.h       |    1 +
 drivers/usb/core/hub.c       |   19 +++--
 drivers/usb/host/xhci-dbg.c  |   19 ++++++
 drivers/usb/host/xhci-hcd.c  |  146 ++++++++++++++++++++++++++++++++++++------
 drivers/usb/host/xhci-hub.c  |   65 ++++++++++++++----
 drivers/usb/host/xhci-mem.c  |   41 ++++++++++--
 drivers/usb/host/xhci-pci.c  |    1 +
 drivers/usb/host/xhci-ring.c |   41 ++++++++++--
 drivers/usb/host/xhci.h      |   11 +++-
 9 files changed, 289 insertions(+), 55 deletions(-)

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