mmc: wakeup panic fix aka sdio_irq_thread

check if host->sdio_irq_thread is NULL before wake_up_process() is
called on host->sdio_irq_thread
cpu-tegra: dont mess with nice settings

Conflicts:
	arch/arm/mach-tegra/cpu-tegra.c
security: create task_free security callback

The current LSM interface to cred_free is not sufficient for allowing
an LSM to track the life and death of a task. This patch adds the
task_free hook so that an LSM can clean up resources on task death.

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: James Morris <jmorris@namei.org>
gpio-tegra: fix export.h usage
video: tegra: fix explicit null dereference
mmc: core: fix possbile memory leak
cpufreq: Resolve CPUFREQ_NOTIFY issue

When the cpufreq_stat receives the frequency policy notification,
it checks if the frequency table and stats table are present for the cpu.
If both are present, it returns with -EBUSY error to the notification.
Due to this, none of the other registered modules receive this
notification.

If the stat table and sysfs nodes are already created, return 0 instead
of returning EBUSY error.

Change-Id: I1fd4a46e6a65edfc6253c4271288f10912ae2ad7
Signed-off-by: Archana Sathyakumar <asathyak@codeaurora.org>
fb: fix reserved usage for android 4.2