iommu/exynos: Fix trivial typos

Fixed trivial typos and grammar to improve readability.
Changed w/a to workaround.

Signed-off-by: Sachin Kamat <sachin.kamat@samsung.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
iommu/vt-d: Don't store SIRTP request

Don't store the SIRTP request bit in the register state. It will
otherwise become sticky and could request an Interrupt Remap Table
Pointer update on each command register write.

Found while starting to emulate IR in QEMU, not by observing problems on
real hardware.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
iommu: Replace rcu_assign_pointer() with RCU_INIT_POINTER()

The use of "rcu_assign_pointer()" is NULLing out the pointer.
According to RCU_INIT_POINTER()'s block comment:
"1.   This use of RCU_INIT_POINTER() is NULLing out the pointer"
it is better to use it instead of rcu_assign_pointer() because it has a
smaller overhead.

The following Coccinelle semantic patch was used:
@@
@@

- rcu_assign_pointer
+ RCU_INIT_POINTER
  (..., NULL)

Signed-off-by: Andreea-Cristina Bernat <bernat.ada@gmail.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
iommu/amd: Move struct iommu_dev_data to amd_iommu.c

The struct is only used there, so it doesn't need to be in
the header file.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
iommu/amd: Keep a list of devices in an alias group

Some broken devices might use any request-id from the alias
group, so we need to set a DTE entry for every device in
there. This patch adds creation of those lists.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
iommu/amd: Attach and detach complete alias group

Change tha device attach and detach semantic to apply to all
devices in an alias group. This means all devices in an
alias group are now attached and detached at the same time.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
iommu/amd: Remove device binding reference count

This reference count is not used anymore, as all devices in
an alias group are now attached and detached together.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
kernel misc: Replace __get_cpu_var uses

Replace uses of __get_cpu_var for address calculation with this_cpu_ptr.

Cc: akpm@linux-foundation.org
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
time: Replace __get_cpu_var uses

Convert uses of __get_cpu_var for creating a address from a percpu
offset to this_cpu_ptr.

The two cases where get_cpu_var is used to actually access a percpu
variable are changed to use this_cpu_read/raw_cpu_read.

Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
time: Convert a bunch of &__get_cpu_var introduced in the 3.16 merge period

Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
scheduler: Replace __get_cpu_var with this_cpu_ptr

Convert all uses of __get_cpu_var for address calculation to use
this_cpu_ptr instead.

[Uses of __get_cpu_var with cpumask_var_t are no longer
handled by this patch]

Cc: Peter Zijlstra <peterz@infradead.org>
Acked-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
block: Replace __this_cpu_ptr with raw_cpu_ptr

__this_cpu_ptr is being phased out use raw_cpu_ptr instead which was
introduced in 3.15-rc1.

Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
drivers/char/random: Replace __get_cpu_var uses

A single case of using __get_cpu_var for address calculation.

Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
drivers/cpuidle: Replace __get_cpu_var uses for address calculation

All of these are for address calculation. Replace with
this_cpu_ptr().

Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: linux-pm@vger.kernel.org
Acked-by: Rafael J. Wysocki <rjw@sisk.pl>
[cpufreq changes]
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
drivers/oprofile: Replace __get_cpu_var uses for address calculation

Replace the uses of __get_cpu_var for address calculation with this_cpu_ptr.

Cc: Robert Richter <rric@kernel.org>
Cc: oprofile-list@lists.sf.net
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
drivers/clocksource: Replace __get_cpu_var used for address calculation

Replace __get_cpu_var used for address calculation with this_cpu_ptr.

Acked-by: James Hogan <james.hogan@imgtec.com>
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
drivers/net/ethernet/tile: Replace __get_cpu_var uses for address calculation

Replace with this_cpu_ptr.

Acked-by: Chris Metcalf <cmetcalf@tilera.com>
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
watchdog: Replace __raw_get_cpu_var uses

Most of these are the uses of &__raw_get_cpu_var for address calculation.

touch_softlockup_watchdog_sync() uses __raw_get_cpu_var to write to
per cpu variables. Use __this_cpu_write instead.

Cc: Wim Van Sebroeck <wim@iguana.be>
Cc: linux-watchdog@vger.kernel.org
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
net: Replace get_cpu_var through this_cpu_ptr

Replace uses of get_cpu_var for address calculation through this_cpu_ptr.

Cc: netdev@vger.kernel.org
Cc: Eric Dumazet <edumazet@google.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
md: Replace __this_cpu_ptr with raw_cpu_ptr

__this_cpu_ptr is being phased out.

Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Tejun Heo <tj@kernel.org>