staging: android: logger: Allocate logs dynamically at boot (v3)

This changes the log initialization to be dynamic, but still
at boot time.  These changes are a predecessor to implementing
runtime allocation and freeing of logs, to make the Android logger
less hard-coded.

Change from a fixed set of static log structures, to allocation
at init time into a list.  Return proper error numbers on log
allocation failure.

Cc: Brian Swetland <swetland@google.com>
Signed-off-by: Tim Bird <tim.bird@am.sony.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
staging: Android: Fix some checkpatch warnings

Warnings reported by checkpatch.pl have been fixed.

Cc: Brian Swetland <swetland@google.com>
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
staging: android: logger: Finish documentation of two structs

Signed-off-by: Cruz Julian Bishop <cruzjbishop@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
staging: android: logger: Fix some sparse and whitespace issues

Fix a few sparse warnings, and improve whitespace.

Cc: Brian Swetland <swetland@google.com>
Signed-off-by: Tim Bird <tim.bird@am.sony.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
staging: android: logger: enforce GID and CAP check on log flush

Restrict log flushing to those in the logs group, or
anyone with CAP_SYSLOG.

Cc: Android Kernel Team <kernel-team@android.com>
Cc: Charndeep Grewal <csgrewa@tycho.ncsc.mil>
Signed-off-by: Charndeep Grewal <csgrewa@tycho.ncsc.mil>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
Staging: Android: logger: module_exit implementation

This patch creates the module_exit for the android logger
so that it can be loaded and unloaded as a module.

The android logger is already declared as a tristate in the
Kconfig but the module_exit function was missing.

device_initcall works also with modprobe since include/linux/init.h:

 #define module_init(x)  __initcall(x);
 ...
 #define __initcall(fn) device_initcall(fn)

Signed-off-by: Luca Clementi <luca.clementi@gmail.com>
Cc: Brian Swetland <swetland@google.com>
Cc: Robert Love <rlove@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
staging: android: logger: Correct write offset reset on error

In the situation that a writer fails to copy data from userspace it will reset
the write offset to the value it had before it went to sleep. This discarding
any messages written while aquiring the mutex.

Therefore the reset offset needs to be retrieved after acquiring the mutex.

Cc: Android Kernel Team <kernel-team@android.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
staging: android: logger: disable at boot
earlysuspend: speedup late resume (faster wakeup of the device)

Thanx to _2bad4u_ for the hint and dsc-team's repo I got the code from (https://github.com/dsc-team/dsc-team-kernel-project)
msm_fb: Import logo changes from Sony
msm_fb: Do not check for BLT when it is already enabled.

On some cases where BLT is enabled by default & the source dimensions require
BLT mode, it returns error.

Check if BLT is disabled before calculating if it should be enabled.

Change-Id: I59f575f353d89cbe5ed3154f4c021fdcc1eff722
msm_fb: Skip writeback buffer init

Cases like "adb shell stop" & "adb shell start" cause the buffers to be
reinitialized, while the buffer has been already allocated.

Solves multiple issues, notably display crash no longer produces blank display.

Change-Id: I7097bc9af90a6ba2f020f911869282c39e9f9a3a
msm_fb: Make sure the backlight is not set to 0 at boot
debug_mm: Only print pr_debug and pr_info if DEBUG.

Greatly reduces the logging of sound messages in the kernel. To enable the
logging, #define DEBUG before including debug_mm.h
rmt_storage: Decrease logging.

Mostly, this information is useless. When debugging is needed, #define DEBUG
at the start of this file should be added.
msm_fb: Correcct mistakes
msm_fb: Add personal GTA logo