Merge "Merge tag 'lsk-v3.18-15.08-android' into 'msm-3.18'"

using the kernel crypto API.

For a more detailed description of supported parameters see:

http://code.google.com/p/cryptsetup/wiki/DMCrypt

https://gitlab.com/cryptsetup/cryptsetup/wikis/DMCrypt

Parameters: <cipher> <key> <iv_offset> <device path> \

	      <offset> [<#opt_params> <opt_params>]

    Otherwise #opt_params is the number of following arguments.

    Example of optional parameters section:

        1 allow_discards

        3 allow_discards same_cpu_crypt submit_from_crypt_cpus

allow_discards

    Block discard requests (a.k.a. TRIM) are passed through the crypt device.

    used space etc.) if the discarded blocks can be located easily on the

    device later.

same_cpu_crypt

    Perform encryption using the same cpu that IO was submitted on.

    The default is to use an unbound workqueue so that encryption work

    is automatically balanced between available CPUs.

submit_from_crypt_cpus

    Disable offloading writes to a separate thread after encryption.

    There are some situations where offloading write bios from the

    encryption threads to a single thread degrades performance

    significantly.  The default is to offload write bios to the same

    thread because it benefits CFQ to have writes submitted using the

    same context.

Example scripts

===============

LUKS (Linux Unified Key Setup) is now the preferred way to set up disk

encryption with dm-crypt using the 'cryptsetup' utility, see

http://code.google.com/p/cryptsetup/

https://gitlab.com/cryptsetup/cryptsetup

[[

#!/bin/sh

The full specification of kernel parameters and on-disk metadata format

is available at the cryptsetup project's wiki page

  http://code.google.com/p/cryptsetup/wiki/DMVerity

  https://gitlab.com/cryptsetup/cryptsetup/wikis/DMVerity

Status

======

A command line tool veritysetup is available to compute or verify

the hash tree or activate the kernel device. This is available from

the cryptsetup upstream repository http://code.google.com/p/cryptsetup/

the cryptsetup upstream repository https://gitlab.com/cryptsetup/cryptsetup/

(as a libcryptsetup extension).

Create hash on the device:

- compatible : "arm,pl022", "arm,primecell"

- reg : Offset and length of the register set for the device

- interrupts : Should contain SPI controller interrupt

- num-cs : total number of chipselects

Optional properties:

- num-cs : total number of chipselects

- cs-gpios : should specify GPIOs used for chipselects.

  The gpios will be referred to as reg = <index> in the SPI child nodes.

  If unspecified, a single SPI device without a chip select can be used.

VERSION = 3

PATCHLEVEL = 18

SUBLEVEL = 18

SUBLEVEL = 20

EXTRAVERSION =

NAME = Shuffling Zombie Juror

CONFIG_TUN=y

CONFIG_UNIX=y

CONFIG_USB_GADGET=y

CONFIG_USB_G_ANDROID=y

CONFIG_USB_CONFIGFS=y

CONFIG_USB_OTG_WAKELOCK=y

CONFIG_XFRM_USER=y