Merge from stable-
Merge commit 'v2.6.32.56' into xen/next-2.6.32

* commit 'v2.6.32.56': (22 commits)
  USB: ftdi_sio: fix initial baud rate
  USB: cp210x: do not map baud rates to B0
  USB: serial: CP210x: Added USB-ID for the Link Instruments MSO-19
  hwmon: (sht15) fix bad error code
  hwmon: (f71805f) Fix clamping of temperature limits
  USB: usbsevseg: fix max length
  usb: io_ti: Make edge_remove_sysfs_attrs the port_remove method.
  USB: cdc-wdm: updating desc->length must be protected by spin_lock
  USB: ftdi_sio: Add more identifiers
  USB: serial: ftdi additional IDs
  USB: ftdi_sio: add PID for TI XDS100v2 / BeagleBone A3
  USB: ftdi_sio: fix TIOCSSERIAL baud_base handling
  dm: do not forward ioctls from logical volumes to the underlying device
  block: fail SCSI passthrough ioctls on partition devices
  Revert "ARM: 7220/1: mmc: mmci: Fixup error handling for dma"
  crypto: sha512 - reduce stack usage to safe number
  crypto: sha512 - make it work, undo percpu message schedule
  drm: Fix authentication kernel crash
  eCryptfs: Make truncate path killable