Merge tag 'pm+acpi-3.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI and power management updates from Rafael Wysocki:

 - Rework of the ACPI namespace scanning code from Rafael J.  Wysocki
   with contributions from Bjorn Helgaas, Jiang Liu, Mika Westerberg,
   Toshi Kani, and Yinghai Lu.

 - ACPI power resources handling and ACPI device PM update from Rafael
   J Wysocki.

 - ACPICA update to version 20130117 from Bob Moore and Lv Zheng with
   contributions from Aaron Lu, Chao Guan, Jesper Juhl, and Tim Gardner.

 - Support for Intel Lynxpoint LPSS from Mika Westerberg.

 - cpuidle update from Len Brown including Intel Haswell support, C1
   state for intel_idle, removal of global pm_idle.

 - cpuidle fixes and cleanups from Daniel Lezcano.

 - cpufreq fixes and cleanups from Viresh Kumar and Fabio Baltieri with
   contributions from Stratos Karafotis and Rickard Andersson.

 - Intel P-states driver for Sandy Bridge processors from Dirk
   Brandewie.

 - cpufreq driver for Marvell Kirkwood SoCs from Andrew Lunn.

 - cpufreq fixes related to ordering issues between acpi-cpufreq and
   powernow-k8 from Borislav Petkov and Matthew Garrett.

 - cpufreq support for Calxeda Highbank processors from Mark Langsdorf
   and Rob Herring.

 - cpufreq driver for the Freescale i.MX6Q SoC and cpufreq-cpu0 update
   from Shawn Guo.

 - cpufreq Exynos fixes and cleanups from Jonghwan Choi, Sachin Kamat,
   and Inderpal Singh.

 - Support for "lightweight suspend" from Zhang Rui.

 - Removal of the deprecated power trace API from Paul Gortmaker.

 - Assorted updates from Andreas Fleig, Colin Ian King, Davidlohr Bueso,
   Joseph Salisbury, Kees Cook, Li Fei, Nishanth Menon, ShuoX Liu,
   Srinivas Pandruvada, Tejun Heo, Thomas Renninger, and Yasuaki
   Ishimatsu.

* tag 'pm+acpi-3.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (267 commits)
  PM idle: remove global declaration of pm_idle
  unicore32 idle: delete stray pm_idle comment
  openrisc idle: delete pm_idle
  mn10300 idle: delete pm_idle
  microblaze idle: delete pm_idle
  m32r idle: delete pm_idle, and other dead idle code
  ia64 idle: delete pm_idle
  cris idle: delete idle and pm_idle
  ARM64 idle: delete pm_idle
  ARM idle: delete pm_idle
  blackfin idle: delete pm_idle
  sparc idle: rename pm_idle to sparc_idle
  sh idle: rename global pm_idle to static sh_idle
  x86 idle: rename global pm_idle to static x86_idle
  APM idle: register apm_cpu_idle via cpuidle
  cpufreq / intel_pstate: Add kernel command line option disable intel_pstate.
  cpufreq / intel_pstate: Change to disallow module build
  tools/power turbostat: display SMI count by default
  intel_idle: export both C1 and C1E
  ACPI / hotplug: Fix concurrency issues and memory leaks
  ...

1 files changed, 14 insertions, 11 deletions

diff --git a/drivers/acpi/acpica/exregion.c b/drivers/acpi/acpica/exregion.c
index 1db2c0bfde0b..182abaf045e1 100644
--- a/drivers/acpi/acpica/exregion.c
+++ b/drivers/acpi/acpica/exregion.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2012, Intel Corp.
+ * Copyright (C) 2000 - 2013, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -142,9 +142,9 @@ acpi_ex_system_memory_space_handler(u32 function,
 		}
 
 		/*
-		 * Attempt to map from the requested address to the end of the region.
-		 * However, we will never map more than one page, nor will we cross
-		 * a page boundary.
+		 * October 2009: Attempt to map from the requested address to the
+		 * end of the region. However, we will never map more than one
+		 * page, nor will we cross a page boundary.
 		 */
 		map_length = (acpi_size)
 		    ((mem_info->address + mem_info->length) - address);
@@ -154,12 +154,15 @@ acpi_ex_system_memory_space_handler(u32 function,
 		 * a page boundary, just map up to the page boundary, do not cross.
 		 * On some systems, crossing a page boundary while mapping regions
 		 * can cause warnings if the pages have different attributes
-		 * due to resource management
+		 * due to resource management.
+		 *
+		 * This has the added benefit of constraining a single mapping to
+		 * one page, which is similar to the original code that used a 4k
+		 * maximum window.
 		 */
 		page_boundary_map_length =
 		    ACPI_ROUND_UP(address, ACPI_DEFAULT_PAGE_SIZE) - address;
-
-		if (!page_boundary_map_length) {
+		if (page_boundary_map_length == 0) {
 			page_boundary_map_length = ACPI_DEFAULT_PAGE_SIZE;
 		}
 
@@ -236,19 +239,19 @@ acpi_ex_system_memory_space_handler(u32 function,
 
 		switch (bit_width) {
 		case 8:
-			ACPI_SET8(logical_addr_ptr) = (u8) * value;
+			ACPI_SET8(logical_addr_ptr, *value);
 			break;
 
 		case 16:
-			ACPI_SET16(logical_addr_ptr) = (u16) * value;
+			ACPI_SET16(logical_addr_ptr, *value);
 			break;
 
 		case 32:
-			ACPI_SET32(logical_addr_ptr) = (u32) * value;
+			ACPI_SET32(logical_addr_ptr, *value);
 			break;
 
 		case 64:
-			ACPI_SET64(logical_addr_ptr) = (u64) * value;
+			ACPI_SET64(logical_addr_ptr, *value);
 			break;
 
 		default: