Merge tag 'pm+acpi-for-3.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI and power management updates from Rafael Wysocki:

 - Introduction of device PM QoS flags.

 - ACPI device power management update allowing subsystems other than
   PCI to use it more easily.

 - ACPI device enumeration rework allowing additional kinds of devices
   to be enumerated via ACPI.  From Mika Westerberg, Adrian Hunter,
   Mathias Nyman, Andy Shevchenko, and Rafael J. Wysocki.

 - ACPICA update to version 20121018 from Bob Moore and Lv Zheng.

 - ACPI memory hotplug update from Wen Congyang and Yasuaki Ishimatsu.

 - Introduction of acpi_handle_<level>() messaging macros and ACPI-based
   CPU hot-remove support from Toshi Kani.

 - ACPI EC updates from Feng Tang.

 - cpufreq updates from Viresh Kumar, Fabio Baltieri and others.

 - cpuidle changes to quickly notice governor prediction failure from
   Youquan Song.

 - Support for using multiple cpuidle drivers at the same time and
   cpuidle cleanups from Daniel Lezcano.

 - devfreq updates from Nishanth Menon and others.

 - cpupower update from Thomas Renninger.

 - Fixes and small cleanups all over the place.

* tag 'pm+acpi-for-3.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (196 commits)
  mmc: sdhci-acpi: enable runtime-pm for device HID INT33C6
  ACPI: add Haswell LPSS devices to acpi_platform_device_ids list
  ACPI: add documentation about ACPI 5 enumeration
  pnpacpi: fix incorrect TEST_ALPHA() test
  ACPI / PM: Fix header of acpi_dev_pm_detach() in acpi.h
  ACPI / video: ignore BIOS initial backlight value for HP Folio 13-2000
  ACPI : do not use Lid and Sleep button for S5 wakeup
  ACPI / PNP: Do not crash due to stale pointer use during system resume
  ACPI / video: Add "Asus UL30VT" to ACPI video detect blacklist
  ACPI: do acpisleep dmi check when CONFIG_ACPI_SLEEP is set
  spi / ACPI: add ACPI enumeration support
  gpio / ACPI: add ACPI support
  PM / devfreq: remove compiler error with module governors (2)
  cpupower: IvyBridge (0x3a and 0x3e models) support
  cpupower: Provide -c param for cpupower monitor to schedule process on all cores
  cpupower tools: Fix warning and a bug with the cpu package count
  cpupower tools: Fix malloc of cpu_info structure
  cpupower tools: Fix issues with sysfs_topology_read_file
  cpupower tools: Fix minor warnings
  cpupower tools: Update .gitignore for files created in the debug directories
  ...

1 files changed, 47 insertions, 14 deletions

diff --git a/drivers/acpi/acpica/psloop.c b/drivers/acpi/acpica/psloop.c
index 799162c1b6df..5607805aab26 100644
--- a/drivers/acpi/acpica/psloop.c
+++ b/drivers/acpi/acpica/psloop.c
@@ -133,18 +133,46 @@ static acpi_status acpi_ps_get_aml_opcode(struct acpi_walk_state *walk_state)
 
 	case AML_CLASS_UNKNOWN:
 
-		/* The opcode is unrecognized. Just skip unknown opcodes */
+		/* The opcode is unrecognized. Complain and skip unknown opcodes */
 
-		ACPI_ERROR((AE_INFO,
-			    "Found unknown opcode 0x%X at AML address %p offset 0x%X, ignoring",
-			    walk_state->opcode, walk_state->parser_state.aml,
-			    walk_state->aml_offset));
+		if (walk_state->pass_number == 2) {
+			ACPI_ERROR((AE_INFO,
+				    "Unknown opcode 0x%.2X at table offset 0x%.4X, ignoring",
+				    walk_state->opcode,
+				    (u32)(walk_state->aml_offset +
+					  sizeof(struct acpi_table_header))));
 
-		ACPI_DUMP_BUFFER(walk_state->parser_state.aml, 128);
+			ACPI_DUMP_BUFFER(walk_state->parser_state.aml - 16, 48);
 
-		/* Assume one-byte bad opcode */
+#ifdef ACPI_ASL_COMPILER
+			/*
+			 * This is executed for the disassembler only. Output goes
+			 * to the disassembled ASL output file.
+			 */
+			acpi_os_printf
+			    ("/*\nError: Unknown opcode 0x%.2X at table offset 0x%.4X, context:\n",
+			     walk_state->opcode,
+			     (u32)(walk_state->aml_offset +
+				   sizeof(struct acpi_table_header)));
+
+			/* Dump the context surrounding the invalid opcode */
+
+			acpi_ut_dump_buffer(((u8 *)walk_state->parser_state.
+					     aml - 16), 48, DB_BYTE_DISPLAY,
+					    walk_state->aml_offset +
+					    sizeof(struct acpi_table_header) -
+					    16);
+			acpi_os_printf(" */\n");
+#endif
+		}
+
+		/* Increment past one-byte or two-byte opcode */
 
 		walk_state->parser_state.aml++;
+		if (walk_state->opcode > 0xFF) {	/* Can only happen if first byte is 0x5B */
+			walk_state->parser_state.aml++;
+		}
+
 		return_ACPI_STATUS(AE_CTRL_PARSE_CONTINUE);
 
 	default:
@@ -519,11 +547,18 @@ acpi_ps_get_arguments(struct acpi_walk_state *walk_state,
 					if ((op_info->class ==
 					     AML_CLASS_EXECUTE) && (!arg)) {
 						ACPI_WARNING((AE_INFO,
-							      "Detected an unsupported executable opcode "
-							      "at module-level: [0x%.4X] at table offset 0x%.4X",
-							      op->common.aml_opcode,
-							      (u32)((aml_op_start - walk_state->parser_state.aml_start)
-								+ sizeof(struct acpi_table_header))));
+							      "Unsupported module-level executable opcode "
+							      "0x%.2X at table offset 0x%.4X",
+							      op->common.
+							      aml_opcode,
+							      (u32)
+							      (ACPI_PTR_DIFF
+							       (aml_op_start,
+								walk_state->
+								parser_state.
+								aml_start) +
+							       sizeof(struct
+								      acpi_table_header))));
 					}
 				}
 				break;
@@ -843,8 +878,6 @@ acpi_ps_complete_op(struct acpi_walk_state *walk_state,
 		*op = NULL;
 	}
 
-	ACPI_PREEMPTION_POINT();
-
 	return_ACPI_STATUS(AE_OK);
 }