Merge commit 'v2.6.30' into for-2.6.31

19 files changed, 385 insertions, 238 deletions

diff --git a/drivers/acpi/acpica/Makefile b/drivers/acpi/acpica/Makefile
index 17e50824a6f..72ac28da14e 100644
--- a/drivers/acpi/acpica/Makefile
+++ b/drivers/acpi/acpica/Makefile
@@ -5,40 +5,43 @@
 ccflags-y			:= -Os
 ccflags-$(CONFIG_ACPI_DEBUG)	+= -DACPI_DEBUG_OUTPUT
 
-obj-y := dsfield.o   dsmthdat.o  dsopcode.o  dswexec.o  dswscope.o \
+# use acpi.o to put all files here into acpi.o modparam namespace
+obj-y	+= acpi.o
+
+acpi-y := dsfield.o   dsmthdat.o  dsopcode.o  dswexec.o  dswscope.o \
 	 dsmethod.o  dsobject.o  dsutils.o   dswload.o  dswstate.o \
 	 dsinit.o
 
-obj-y += evevent.o  evregion.o  evsci.o    evxfevnt.o \
+acpi-y += evevent.o  evregion.o  evsci.o    evxfevnt.o \
 	 evmisc.o   evrgnini.o  evxface.o  evxfregn.o \
 	 evgpe.o    evgpeblk.o
 
-obj-y += exconfig.o  exfield.o  exnames.o   exoparg6.o  exresolv.o  exstorob.o\
+acpi-y += exconfig.o  exfield.o  exnames.o   exoparg6.o  exresolv.o  exstorob.o\
 	 exconvrt.o  exfldio.o  exoparg1.o  exprep.o    exresop.o   exsystem.o\
 	 excreate.o  exmisc.o   exoparg2.o  exregion.o  exstore.o   exutils.o \
 	 exdump.o    exmutex.o  exoparg3.o  exresnte.o  exstoren.o
 
-obj-y += hwacpi.o  hwgpe.o  hwregs.o  hwsleep.o hwxface.o hwvalid.o
+acpi-y += hwacpi.o  hwgpe.o  hwregs.o  hwsleep.o hwxface.o hwvalid.o
 
-obj-$(ACPI_FUTURE_USAGE) += hwtimer.o
+acpi-$(ACPI_FUTURE_USAGE) += hwtimer.o
 
-obj-y += nsaccess.o  nsload.o    nssearch.o  nsxfeval.o \
+acpi-y += nsaccess.o  nsload.o    nssearch.o  nsxfeval.o \
 	 nsalloc.o   nseval.o    nsnames.o   nsutils.o   nsxfname.o \
 	 nsdump.o    nsinit.o    nsobject.o  nswalk.o    nsxfobj.o  \
 	 nsparse.o   nspredef.o
 
-obj-$(ACPI_FUTURE_USAGE) += nsdumpdv.o
+acpi-$(ACPI_FUTURE_USAGE) += nsdumpdv.o
 
-obj-y += psargs.o    psparse.o  psloop.o pstree.o   pswalk.o  \
+acpi-y += psargs.o    psparse.o  psloop.o pstree.o   pswalk.o  \
 	 psopcode.o  psscope.o  psutils.o  psxface.o
 
-obj-y += rsaddr.o rscreate.o rsinfo.o rsio.o rslist.o rsmisc.o rsxface.o \
+acpi-y += rsaddr.o rscreate.o rsinfo.o rsio.o rslist.o rsmisc.o rsxface.o \
 	 rscalc.o  rsirq.o  rsmemory.o  rsutils.o
 
-obj-$(ACPI_FUTURE_USAGE) += rsdump.o
+acpi-$(ACPI_FUTURE_USAGE) += rsdump.o
 
-obj-y += tbxface.o tbinstal.o tbutils.o tbfind.o tbfadt.o tbxfroot.o
+acpi-y += tbxface.o tbinstal.o tbutils.o tbfind.o tbfadt.o tbxfroot.o
 
-obj-y += utalloc.o utdebug.o uteval.o utinit.o utmisc.o utxface.o \
+acpi-y += utalloc.o utdebug.o uteval.o utinit.o utmisc.o utxface.o \
 		utcopy.o utdelete.o utglobal.o utmath.o utobject.o \
 		utstate.o utmutex.o utobject.o utresrc.o utlock.o
diff --git a/drivers/acpi/acpica/aclocal.h b/drivers/acpi/acpica/aclocal.h
index 772ee5c4ccc..2ec394a328e 100644
--- a/drivers/acpi/acpica/aclocal.h
+++ b/drivers/acpi/acpica/aclocal.h
@@ -787,7 +787,12 @@ struct acpi_bit_register_info {
 
 /* For control registers, both ignored and reserved bits must be preserved */
 
-#define ACPI_PM1_CONTROL_IGNORED_BITS           0x0201	/* Bits 9, 0(SCI_EN) */
+/*
+ * The ACPI spec says to ignore PM1_CTL.SCI_EN (bit 0)
+ * but we need to be able to write ACPI_BITREG_SCI_ENABLE directly
+ * as a BIOS workaround on some machines.
+ */
+#define ACPI_PM1_CONTROL_IGNORED_BITS           0x0200	/* Bits 9 */
 #define ACPI_PM1_CONTROL_RESERVED_BITS          0xC1F8	/* Bits 14-15, 3-8 */
 #define ACPI_PM1_CONTROL_PRESERVED_BITS \
 	       (ACPI_PM1_CONTROL_IGNORED_BITS | ACPI_PM1_CONTROL_RESERVED_BITS)
diff --git a/drivers/acpi/acpica/hwsleep.c b/drivers/acpi/acpica/hwsleep.c
index baa5fc05e12..db307a356f0 100644
--- a/drivers/acpi/acpica/hwsleep.c
+++ b/drivers/acpi/acpica/hwsleep.c
@@ -211,6 +211,12 @@ acpi_status acpi_enter_sleep_state_prep(u8 sleep_state)
 
 ACPI_EXPORT_SYMBOL(acpi_enter_sleep_state_prep)
 
+static unsigned int gts, bfs;
+module_param(gts, uint, 0644);
+module_param(bfs, uint, 0644);
+MODULE_PARM_DESC(gts, "Enable evaluation of _GTS on suspend.");
+MODULE_PARM_DESC(bfs, "Enable evaluation of _BFS on resume".);
+
 /*******************************************************************************
  *
  * FUNCTION:    acpi_enter_sleep_state
@@ -278,16 +284,18 @@ acpi_status asmlinkage acpi_enter_sleep_state(u8 sleep_state)
 		return_ACPI_STATUS(status);
 	}
 
-	/* Execute the _GTS method */
+	if (gts) {
+		/* Execute the _GTS method */
 
-	arg_list.count = 1;
-	arg_list.pointer = &arg;
-	arg.type = ACPI_TYPE_INTEGER;
-	arg.integer.value = sleep_state;
+		arg_list.count = 1;
+		arg_list.pointer = &arg;
+		arg.type = ACPI_TYPE_INTEGER;
+		arg.integer.value = sleep_state;
 
-	status = acpi_evaluate_object(NULL, METHOD_NAME__GTS, &arg_list, NULL);
-	if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
-		return_ACPI_STATUS(status);
+		status = acpi_evaluate_object(NULL, METHOD_NAME__GTS, &arg_list, NULL);
+		if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
+			return_ACPI_STATUS(status);
+		}
 	}
 
 	/* Get current value of PM1A control */
@@ -513,18 +521,19 @@ acpi_status acpi_leave_sleep_state_prep(u8 sleep_state)
 		}
 	}
 
-	/* Execute the _BFS method */
+	if (bfs) {
+		/* Execute the _BFS method */
 
-	arg_list.count = 1;
-	arg_list.pointer = &arg;
-	arg.type = ACPI_TYPE_INTEGER;
-	arg.integer.value = sleep_state;
+		arg_list.count = 1;
+		arg_list.pointer = &arg;
+		arg.type = ACPI_TYPE_INTEGER;
+		arg.integer.value = sleep_state;
 
-	status = acpi_evaluate_object(NULL, METHOD_NAME__BFS, &arg_list, NULL);
-	if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
-		ACPI_EXCEPTION((AE_INFO, status, "During Method _BFS"));
+		status = acpi_evaluate_object(NULL, METHOD_NAME__BFS, &arg_list, NULL);
+		if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
+			ACPI_EXCEPTION((AE_INFO, status, "During Method _BFS"));
+		}
 	}
-
 	return_ACPI_STATUS(status);
 }
 
diff --git a/drivers/acpi/acpica/hwvalid.c b/drivers/acpi/acpica/hwvalid.c
index 7737afb157c..ec33f270c5b 100644
--- a/drivers/acpi/acpica/hwvalid.c
+++ b/drivers/acpi/acpica/hwvalid.c
@@ -90,6 +90,7 @@ static const struct acpi_port_info acpi_protected_ports[] = {
 	{"PIT2", 0x0048, 0x004B, ACPI_OSI_WIN_XP},
 	{"RTC", 0x0070, 0x0071, ACPI_OSI_WIN_XP},
 	{"CMOS", 0x0074, 0x0076, ACPI_OSI_WIN_XP},
+	{"DMA1", 0x0081, 0x0083, ACPI_OSI_WIN_XP},
 	{"DMA1L", 0x0087, 0x0087, ACPI_OSI_WIN_XP},
 	{"DMA2", 0x0089, 0x008B, ACPI_OSI_WIN_XP},
 	{"DMA2L", 0x008F, 0x008F, ACPI_OSI_WIN_XP},
@@ -151,7 +152,7 @@ acpi_hw_validate_io_request(acpi_io_address address, u32 bit_width)
 		ACPI_ERROR((AE_INFO,
 			    "Illegal I/O port address/length above 64K: 0x%p/%X",
 			    ACPI_CAST_PTR(void, address), byte_width));
-		return_ACPI_STATUS(AE_AML_ILLEGAL_ADDRESS);
+		return_ACPI_STATUS(AE_LIMIT);
 	}
 
 	/* Exit if requested address is not within the protected port table */
@@ -178,11 +179,12 @@ acpi_hw_validate_io_request(acpi_io_address address, u32 bit_width)
 			/* Port illegality may depend on the _OSI calls made by the BIOS */
 
 			if (acpi_gbl_osi_data >= port_info->osi_dependency) {
-				ACPI_ERROR((AE_INFO,
-					    "Denied AML access to port 0x%p/%X (%s 0x%.4X-0x%.4X)",
-					    ACPI_CAST_PTR(void, address),
-					    byte_width, port_info->name,
-					    port_info->start, port_info->end));
+				ACPI_DEBUG_PRINT((ACPI_DB_IO,
+						  "Denied AML access to port 0x%p/%X (%s 0x%.4X-0x%.4X)",
+						  ACPI_CAST_PTR(void, address),
+						  byte_width, port_info->name,
+						  port_info->start,
+						  port_info->end));
 
 				return_ACPI_STATUS(AE_AML_ILLEGAL_ADDRESS);
 			}
@@ -206,7 +208,7 @@ acpi_hw_validate_io_request(acpi_io_address address, u32 bit_width)
  *              Value               Where value is placed
  *              Width               Number of bits
  *
- * RETURN:      Value read from port
+ * RETURN:      Status and value read from port
  *
  * DESCRIPTION: Read data from an I/O port or register. This is a front-end
  *              to acpi_os_read_port that performs validation on both the port
@@ -217,14 +219,43 @@ acpi_hw_validate_io_request(acpi_io_address address, u32 bit_width)
 acpi_status acpi_hw_read_port(acpi_io_address address, u32 *value, u32 width)
 {
 	acpi_status status;
+	u32 one_byte;
+	u32 i;
+
+	/* Validate the entire request and perform the I/O */
 
 	status = acpi_hw_validate_io_request(address, width);
-	if (ACPI_FAILURE(status)) {
+	if (ACPI_SUCCESS(status)) {
+		status = acpi_os_read_port(address, value, width);
 		return status;
 	}
 
-	status = acpi_os_read_port(address, value, width);
-	return status;
+	if (status != AE_AML_ILLEGAL_ADDRESS) {
+		return status;
+	}
+
+	/*
+	 * There has been a protection violation within the request. Fall
+	 * back to byte granularity port I/O and ignore the failing bytes.
+	 * This provides Windows compatibility.
+	 */
+	for (i = 0, *value = 0; i < width; i += 8) {
+
+		/* Validate and read one byte */
+
+		if (acpi_hw_validate_io_request(address, 8) == AE_OK) {
+			status = acpi_os_read_port(address, &one_byte, 8);
+			if (ACPI_FAILURE(status)) {
+				return status;
+			}
+
+			*value |= (one_byte << i);
+		}
+
+		address++;
+	}
+
+	return AE_OK;
 }
 
 /******************************************************************************
@@ -235,7 +266,7 @@ acpi_status acpi_hw_read_port(acpi_io_address address, u32 *value, u32 width)
  *              Value               Value to write
  *              Width               Number of bits
  *
- * RETURN:      None
+ * RETURN:      Status
  *
  * DESCRIPTION: Write data to an I/O port or register. This is a front-end
  *              to acpi_os_write_port that performs validation on both the port
@@ -246,12 +277,39 @@ acpi_status acpi_hw_read_port(acpi_io_address address, u32 *value, u32 width)
 acpi_status acpi_hw_write_port(acpi_io_address address, u32 value, u32 width)
 {
 	acpi_status status;
+	u32 i;
+
+	/* Validate the entire request and perform the I/O */
 
 	status = acpi_hw_validate_io_request(address, width);
-	if (ACPI_FAILURE(status)) {
+	if (ACPI_SUCCESS(status)) {
+		status = acpi_os_write_port(address, value, width);
 		return status;
 	}
 
-	status = acpi_os_write_port(address, value, width);
-	return status;
+	if (status != AE_AML_ILLEGAL_ADDRESS) {
+		return status;
+	}
+
+	/*
+	 * There has been a protection violation within the request. Fall
+	 * back to byte granularity port I/O and ignore the failing bytes.
+	 * This provides Windows compatibility.
+	 */
+	for (i = 0; i < width; i += 8) {
+
+		/* Validate and write one byte */
+
+		if (acpi_hw_validate_io_request(address, 8) == AE_OK) {
+			status =
+			    acpi_os_write_port(address, (value >> i) & 0xFF, 8);
+			if (ACPI_FAILURE(status)) {
+				return status;
+			}
+		}
+
+		address++;
+	}
+
+	return AE_OK;
 }
diff --git a/drivers/acpi/acpica/rscalc.c b/drivers/acpi/acpica/rscalc.c
index b6667ff059e..88b5a2c4814 100644
--- a/drivers/acpi/acpica/rscalc.c
+++ b/drivers/acpi/acpica/rscalc.c
@@ -543,6 +543,13 @@ acpi_rs_get_pci_routing_table_length(union acpi_operand_object *package_object,
 
 		package_element = *top_object_list;
 
+		/* We must have a valid Package object */
+
+		if (!package_element ||
+		    (package_element->common.type != ACPI_TYPE_PACKAGE)) {
+			return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
+		}
+
 		/*
 		 * The sub_object_list will now point to an array of the
 		 * four IRQ elements: Address, Pin, Source and source_index
diff --git a/drivers/acpi/acpica/rscreate.c b/drivers/acpi/acpica/rscreate.c
index 663f692fffc..a3c23d686d5 100644
--- a/drivers/acpi/acpica/rscreate.c
+++ b/drivers/acpi/acpica/rscreate.c
@@ -191,8 +191,6 @@ acpi_rs_create_pci_routing_table(union acpi_operand_object *package_object,
 	user_prt = ACPI_CAST_PTR(struct acpi_pci_routing_table, buffer);
 
 	for (index = 0; index < number_of_elements; index++) {
-		int source_name_index = 2;
-		int source_index_index = 3;
 
 		/*
 		 * Point user_prt past this current structure
@@ -261,27 +259,6 @@ acpi_rs_create_pci_routing_table(union acpi_operand_object *package_object,
 			return_ACPI_STATUS(AE_BAD_DATA);
 		}
 
-		/*
-		 * If BIOS erroneously reversed the _PRT source_name and source_index,
-		 * then reverse them back.
-		 */
-		if ((sub_object_list[3])->common.type !=
-		    ACPI_TYPE_INTEGER) {
-			if (acpi_gbl_enable_interpreter_slack) {
-				source_name_index = 3;
-				source_index_index = 2;
-				printk(KERN_WARNING
-				       "ACPI: Handling Garbled _PRT entry\n");
-			} else {
-				ACPI_ERROR((AE_INFO,
-					    "(PRT[%X].source_index) Need Integer, found %s",
-					    index,
-					    acpi_ut_get_object_type_name
-					    (sub_object_list[3])));
-				return_ACPI_STATUS(AE_BAD_DATA);
-			}
-		}
-
 		user_prt->pin = (u32) obj_desc->integer.value;
 
 		/*
@@ -304,7 +281,7 @@ acpi_rs_create_pci_routing_table(union acpi_operand_object *package_object,
 		 * 3) Third subobject: Dereference the PRT.source_name
 		 * The name may be unresolved (slack mode), so allow a null object
 		 */
-		obj_desc = sub_object_list[source_name_index];
+		obj_desc = sub_object_list[2];
 		if (obj_desc) {
 			switch (obj_desc->common.type) {
 			case ACPI_TYPE_LOCAL_REFERENCE:
@@ -378,7 +355,7 @@ acpi_rs_create_pci_routing_table(union acpi_operand_object *package_object,
 
 		/* 4) Fourth subobject: Dereference the PRT.source_index */
 
-		obj_desc = sub_object_list[source_index_index];
+		obj_desc = sub_object_list[3];
 		if (obj_desc->common.type != ACPI_TYPE_INTEGER) {
 			ACPI_ERROR((AE_INFO,
 				    "(PRT[%X].SourceIndex) Need Integer, found %s",
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index e8f7b64e92d..ae862f1798d 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -312,7 +312,7 @@ int acpi_bus_set_power(acpi_handle handle, int state)
       end:
 	if (result)
 		printk(KERN_WARNING PREFIX
-			      "Transitioning device [%s] to D%d\n",
+			      "Device [%s] failed to transition to D%d\n",
 			      device->pnp.bus_id, state);
 	else {
 		device->power.state = state;
diff --git a/drivers/acpi/button.c b/drivers/acpi/button.c
index d73c94b8441..9195deba9d9 100644
--- a/drivers/acpi/button.c
+++ b/drivers/acpi/button.c
@@ -1,5 +1,5 @@
 /*
- *  acpi_button.c - ACPI Button Driver ($Revision: 30 $)
+ *  button.c - ACPI Button Driver
  *
  *  Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com>
  *  Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
@@ -41,17 +41,13 @@
 
 #define ACPI_BUTTON_SUBCLASS_POWER	"power"
 #define ACPI_BUTTON_HID_POWER		"PNP0C0C"
-#define ACPI_BUTTON_DEVICE_NAME_POWER	"Power Button (CM)"
-#define ACPI_BUTTON_DEVICE_NAME_POWERF	"Power Button (FF)"
+#define ACPI_BUTTON_DEVICE_NAME_POWER	"Power Button"
 #define ACPI_BUTTON_TYPE_POWER		0x01
-#define ACPI_BUTTON_TYPE_POWERF		0x02
 
 #define ACPI_BUTTON_SUBCLASS_SLEEP	"sleep"
 #define ACPI_BUTTON_HID_SLEEP		"PNP0C0E"
-#define ACPI_BUTTON_DEVICE_NAME_SLEEP	"Sleep Button (CM)"
-#define ACPI_BUTTON_DEVICE_NAME_SLEEPF	"Sleep Button (FF)"
+#define ACPI_BUTTON_DEVICE_NAME_SLEEP	"Sleep Button"
 #define ACPI_BUTTON_TYPE_SLEEP		0x03
-#define ACPI_BUTTON_TYPE_SLEEPF		0x04
 
 #define ACPI_BUTTON_SUBCLASS_LID	"lid"
 #define ACPI_BUTTON_HID_LID		"PNP0C0D"
@@ -95,7 +91,6 @@ static struct acpi_driver acpi_button_driver = {
 };
 
 struct acpi_button {
-	struct acpi_device *device;	/* Fixed button kludge */
 	unsigned int type;
 	struct input_dev *input;
 	char phys[32];			/* for input device */
@@ -126,14 +121,10 @@ static struct proc_dir_entry *acpi_button_dir;
 
 static int acpi_button_info_seq_show(struct seq_file *seq, void *offset)
 {
-	struct acpi_button *button = seq->private;
-
-	if (!button || !button->device)
-		return 0;
+	struct acpi_device *device = seq->private;
 
 	seq_printf(seq, "type:                    %s\n",
-		   acpi_device_name(button->device));
-
+		   acpi_device_name(device));
 	return 0;
 }
 
@@ -144,14 +135,11 @@ static int acpi_button_info_open_fs(struct inode *inode, struct file *file)
 
 static int acpi_button_state_seq_show(struct seq_file *seq, void *offset)
 {
-	struct acpi_button *button = seq->private;
+	struct acpi_device *device = seq->private;
 	acpi_status status;
 	unsigned long long state;
 
-	if (!button || !button->device)
-		return 0;
-
-	status = acpi_evaluate_integer(button->device->handle, "_LID", NULL, &state);
+	status = acpi_evaluate_integer(device->handle, "_LID", NULL, &state);
 	seq_printf(seq, "state:      %s\n",
 		   ACPI_FAILURE(status) ? "unsupported" :
 			(state ? "open" : "closed"));
@@ -169,24 +157,17 @@ static struct proc_dir_entry *acpi_lid_dir;
 
 static int acpi_button_add_fs(struct acpi_device *device)
 {
+	struct acpi_button *button = acpi_driver_data(device);
 	struct proc_dir_entry *entry = NULL;
-	struct acpi_button *button;
-
-	if (!device || !acpi_driver_data(device))
-		return -EINVAL;
-
-	button = acpi_driver_data(device);
 
 	switch (button->type) {
 	case ACPI_BUTTON_TYPE_POWER:
-	case ACPI_BUTTON_TYPE_POWERF:
 		if (!acpi_power_dir)
 			acpi_power_dir = proc_mkdir(ACPI_BUTTON_SUBCLASS_POWER,
 						    acpi_button_dir);
 		entry = acpi_power_dir;
 		break;
 	case ACPI_BUTTON_TYPE_SLEEP:
-	case ACPI_BUTTON_TYPE_SLEEPF:
 		if (!acpi_sleep_dir)
 			acpi_sleep_dir = proc_mkdir(ACPI_BUTTON_SUBCLASS_SLEEP,
 						    acpi_button_dir);
@@ -210,8 +191,7 @@ static int acpi_button_add_fs(struct acpi_device *device)
 	/* 'info' [R] */
 	entry = proc_create_data(ACPI_BUTTON_FILE_INFO,
 				 S_IRUGO, acpi_device_dir(device),
-				 &acpi_button_info_fops,
-				 acpi_driver_data(device));
+				 &acpi_button_info_fops, device);
 	if (!entry)
 		return -ENODEV;
 
@@ -219,8 +199,7 @@ static int acpi_button_add_fs(struct acpi_device *device)
 	if (button->type == ACPI_BUTTON_TYPE_LID) {
 		entry = proc_create_data(ACPI_BUTTON_FILE_STATE,
 					 S_IRUGO, acpi_device_dir(device),
-					 &acpi_button_state_fops,
-					 acpi_driver_data(device));
+					 &acpi_button_state_fops, device);
 		if (!entry)
 			return -ENODEV;
 	}
@@ -250,15 +229,16 @@ static int acpi_button_remove_fs(struct acpi_device *device)
 /* --------------------------------------------------------------------------
                                 Driver Interface
    -------------------------------------------------------------------------- */
-static int acpi_lid_send_state(struct acpi_button *button)
+static int acpi_lid_send_state(struct acpi_device *device)
 {
+	struct acpi_button *button = acpi_driver_data(device);
 	unsigned long long state;
 	acpi_status status;
 
-	status = acpi_evaluate_integer(button->device->handle, "_LID", NULL,
-					&state);
+	status = acpi_evaluate_integer(device->handle, "_LID", NULL, &state);
 	if (ACPI_FAILURE(status))
 		return -ENODEV;
+
 	/* input layer checks if event is redundant */
 	input_report_switch(button->input, SW_LID, !state);
 	input_sync(button->input);
@@ -270,9 +250,6 @@ static void acpi_button_notify(struct acpi_device *device, u32 event)
 	struct acpi_button *button = acpi_driver_data(device);
 	struct input_dev *input;
 
-	if (!button || !button->device)
-		return;
-
 	switch (event) {
 	case ACPI_FIXED_HARDWARE_EVENT:
 		event = ACPI_BUTTON_NOTIFY_STATUS;
@@ -280,7 +257,7 @@ static void acpi_button_notify(struct acpi_device *device, u32 event)
 	case ACPI_BUTTON_NOTIFY_STATUS:
 		input = button->input;
 		if (button->type == ACPI_BUTTON_TYPE_LID) {
-			acpi_lid_send_state(button);
+			acpi_lid_send_state(device);
 		} else {
 			int keycode = test_bit(KEY_SLEEP, input->keybit) ?
 						KEY_SLEEP : KEY_POWER;
@@ -291,43 +268,35 @@ static void acpi_button_notify(struct acpi_device *device, u32 event)
 			input_sync(input);
 		}
 
-		acpi_bus_generate_proc_event(button->device, event,
-					++button->pushed);
+		acpi_bus_generate_proc_event(device, event, ++button->pushed);
 		break;
 	default:
 		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
 				  "Unsupported event [0x%x]\n", event));
 		break;
 	}
-
-	return;
 }
 
 static int acpi_button_resume(struct acpi_device *device)
 {
-	struct acpi_button *button;
-	if (!device)
-		return -EINVAL;
-	button = acpi_driver_data(device);
-	if (button && button->type == ACPI_BUTTON_TYPE_LID)
-		return acpi_lid_send_state(button);
+	struct acpi_button *button = acpi_driver_data(device);
+
+	if (button->type == ACPI_BUTTON_TYPE_LID)
+		return acpi_lid_send_state(device);
 	return 0;
 }
 
 static int acpi_button_add(struct acpi_device *device)
 {
-	int error;
 	struct acpi_button *button;
 	struct input_dev *input;
-
-	if (!device)
-		return -EINVAL;
+	char *hid, *name, *class;
+	int error;
 
 	button = kzalloc(sizeof(struct acpi_button), GFP_KERNEL);
 	if (!button)
 		return -ENOMEM;
 
-	button->device = device;
 	device->driver_data = button;
 
 	button->input = input = input_allocate_device();
@@ -336,40 +305,29 @@ static int acpi_button_add(struct acpi_device *device)
 		goto err_free_button;
 	}
 
-	/*
-	 * Determine the button type (via hid), as fixed-feature buttons
-	 * need to be handled a bit differently than generic-space.
-	 */
-	if (!strcmp(acpi_device_hid(device), ACPI_BUTTON_HID_POWER)) {
+	hid = acpi_device_hid(device);
+	name = acpi_device_name(device);
+	class = acpi_device_class(device);
+
+	if (!strcmp(hid, ACPI_BUTTON_HID_POWER) ||
+	    !strcmp(hid, ACPI_BUTTON_HID_POWERF)) {
 		button->type = ACPI_BUTTON_TYPE_POWER;
-		strcpy(acpi_device_name(device), ACPI_BUTTON_DEVICE_NAME_POWER);
-		sprintf(acpi_device_class(device), "%s/%s",
-			ACPI_BUTTON_CLASS, ACPI_BUTTON_SUBCLASS_POWER);
-	} else if (!strcmp(acpi_device_hid(device), ACPI_BUTTON_HID_POWERF)) {
-		button->type = ACPI_BUTTON_TYPE_POWERF;
-		strcpy(acpi_device_name(device),
-		       ACPI_BUTTON_DEVICE_NAME_POWERF);
-		sprintf(acpi_device_class(device), "%s/%s",
+		strcpy(name, ACPI_BUTTON_DEVICE_NAME_POWER);
+		sprintf(class, "%s/%s",
 			ACPI_BUTTON_CLASS, ACPI_BUTTON_SUBCLASS_POWER);
-	} else if (!strcmp(acpi_device_hid(device), ACPI_BUTTON_HID_SLEEP)) {
+	} else if (!strcmp(hid, ACPI_BUTTON_HID_SLEEP) ||
+		   !strcmp(hid, ACPI_BUTTON_HID_SLEEPF)) {
 		button->type = ACPI_BUTTON_TYPE_SLEEP;
-		strcpy(acpi_device_name(device), ACPI_BUTTON_DEVICE_NAME_SLEEP);
-		sprintf(acpi_device_class(device), "%s/%s",
-			ACPI_BUTTON_CLASS, ACPI_BUTTON_SUBCLASS_SLEEP);
-	} else if (!strcmp(acpi_device_hid(device), ACPI_BUTTON_HID_SLEEPF)) {
-		button->type = ACPI_BUTTON_TYPE_SLEEPF;
-		strcpy(acpi_device_name(device),
-		       ACPI_BUTTON_DEVICE_NAME_SLEEPF);
-		sprintf(acpi_device_class(device), "%s/%s",
+		strcpy(name, ACPI_BUTTON_DEVICE_NAME_SLEEP);
+		sprintf(class, "%s/%s",
 			ACPI_BUTTON_CLASS, ACPI_BUTTON_SUBCLASS_SLEEP);
-	} else if (!strcmp(acpi_device_hid(device), ACPI_BUTTON_HID_LID)) {
+	} else if (!strcmp(hid, ACPI_BUTTON_HID_LID)) {
 		button->type = ACPI_BUTTON_TYPE_LID;
-		strcpy(acpi_device_name(device), ACPI_BUTTON_DEVICE_NAME_LID);
-		sprintf(acpi_device_class(device), "%s/%s",
+		strcpy(name, ACPI_BUTTON_DEVICE_NAME_LID);
+		sprintf(class, "%s/%s",
 			ACPI_BUTTON_CLASS, ACPI_BUTTON_SUBCLASS_LID);
 	} else {
-		printk(KERN_ERR PREFIX "Unsupported hid [%s]\n",
-			    acpi_device_hid(device));
+		printk(KERN_ERR PREFIX "Unsupported hid [%s]\n", hid);
 		error = -ENODEV;
 		goto err_free_input;
 	}
@@ -378,10 +336,9 @@ static int acpi_button_add(struct acpi_device *device)
 	if (error)
 		goto err_free_input;
 
-	snprintf(button->phys, sizeof(button->phys),
-		 "%s/button/input0", acpi_device_hid(device));
+	snprintf(button->phys, sizeof(button->phys), "%s/button/input0", hid);
 
-	input->name = acpi_device_name(device);
+	input->name = name;
 	input->phys = button->phys;
 	input->id.bustype = BUS_HOST;
 	input->id.product = button->type;
@@ -389,13 +346,11 @@ static int acpi_button_add(struct acpi_device *device)
 
 	switch (button->type) {
 	case ACPI_BUTTON_TYPE_POWER:
-	case ACPI_BUTTON_TYPE_POWERF:
 		input->evbit[0] = BIT_MASK(EV_KEY);
 		set_bit(KEY_POWER, input->keybit);
 		break;
 
 	case ACPI_BUTTON_TYPE_SLEEP:
-	case ACPI_BUTTON_TYPE_SLEEPF:
 		input->evbit[0] = BIT_MASK(EV_KEY);
 		set_bit(KEY_SLEEP, input->keybit);
 		break;
@@ -410,7 +365,7 @@ static int acpi_button_add(struct acpi_device *device)
 	if (error)
 		goto err_remove_fs;
 	if (button->type == ACPI_BUTTON_TYPE_LID)
-		acpi_lid_send_state(button);
+		acpi_lid_send_state(device);
 
 	if (device->wakeup.flags.valid) {
 		/* Button's GPE is run-wake GPE */
@@ -422,9 +377,7 @@ static int acpi_button_add(struct acpi_device *device)
 		device->wakeup.state.enabled = 1;
 	}
 
-	printk(KERN_INFO PREFIX "%s [%s]\n",
-	       acpi_device_name(device), acpi_device_bid(device));
-
+	printk(KERN_INFO PREFIX "%s [%s]\n", name, acpi_device_bid(device));
 	return 0;
 
  err_remove_fs:
@@ -438,17 +391,11 @@ static int acpi_button_add(struct acpi_device *device)
 
 static int acpi_button_remove(struct acpi_device *device, int type)
 {
-	struct acpi_button *button;
-
-	if (!device || !acpi_driver_data(device))
-		return -EINVAL;
-
-	button = acpi_driver_data(device);
+	struct acpi_button *button = acpi_driver_data(device);
 
 	acpi_button_remove_fs(device);
 	input_unregister_device(button->input);
 	kfree(button);
-
 	return 0;
 }
 
@@ -459,6 +406,7 @@ static int __init acpi_button_init(void)
 	acpi_button_dir = proc_mkdir(ACPI_BUTTON_CLASS, acpi_root_dir);
 	if (!acpi_button_dir)
 		return -ENODEV;
+
 	result = acpi_bus_register_driver(&acpi_button_driver);
 	if (result < 0) {
 		remove_proc_entry(ACPI_BUTTON_CLASS, acpi_root_dir);
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index 04e90443eff..391f331674c 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -1065,6 +1065,7 @@ static int acpi_ec_resume(struct acpi_device *device)
 	struct acpi_ec *ec = acpi_driver_data(device);
 	/* Enable use of GPE back */
 	clear_bit(EC_FLAGS_NO_GPE, &ec->flags);
+	set_bit(EC_FLAGS_GPE_MODE, &ec->flags);
 	acpi_enable_gpe(NULL, ec->gpe);
 	return 0;
 }
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index d59f08ecaf1..d916bea729f 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -353,8 +353,10 @@ static irqreturn_t acpi_irq(int irq, void *dev_id)
 	if (handled) {
 		acpi_irq_handled++;
 		return IRQ_HANDLED;
-	} else
+	} else {
+		acpi_irq_not_handled++;
 		return IRQ_NONE;
+	}
 }
 
 acpi_status
diff --git a/drivers/acpi/pci_bind.c b/drivers/acpi/pci_bind.c
index 95650f83ce2..bc46de3d967 100644
--- a/drivers/acpi/pci_bind.c
+++ b/drivers/acpi/pci_bind.c
@@ -116,9 +116,6 @@ int acpi_pci_bind(struct acpi_device *device)
 	struct acpi_pci_data *pdata;
 	struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
 	acpi_handle handle;
-	struct pci_dev *dev;
-	struct pci_bus *bus;
-
 
 	if (!device || !device->parent)
 		return -EINVAL;
@@ -176,20 +173,9 @@ int acpi_pci_bind(struct acpi_device *device)
 	 * Locate matching device in PCI namespace.  If it doesn't exist
 	 * this typically means that the device isn't currently inserted
 	 * (e.g. docking station, port replicator, etc.).
-	 * We cannot simply search the global pci device list, since
-	 * PCI devices are added to the global pci list when the root
-	 * bridge start ops are run, which may not have happened yet.
 	 */
-	bus = pci_find_bus(data->id.segment, data->id.bus);
-	if (bus) {
-		list_for_each_entry(dev, &bus->devices, bus_list) {
-			if (dev->devfn == PCI_DEVFN(data->id.device,
-						    data->id.function)) {
-				data->dev = dev;
-				break;
-			}
-		}
-	}
+	data->dev = pci_get_slot(pdata->bus,
+				PCI_DEVFN(data->id.device, data->id.function));
 	if (!data->dev) {
 		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
 				  "Device %04x:%02x:%02x.%d not present in PCI namespace\n",
@@ -259,9 +245,10 @@ int acpi_pci_bind(struct acpi_device *device)
 
       end:
 	kfree(buffer.pointer);
-	if (result)
+	if (result) {
+		pci_dev_put(data->dev);
 		kfree(data);
-
+	}
 	return result;
 }
 
@@ -303,6 +290,7 @@ static int acpi_pci_unbind(struct acpi_device *device)
 	if (data->dev->subordinate) {
 		acpi_pci_irq_del_prt(data->id.segment, data->bus->number);
 	}
+	pci_dev_put(data->dev);
 	kfree(data);
 
       end:
diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c
index 45ad3288c5f..23f0fb84f1c 100644
--- a/drivers/acpi/processor_core.c
+++ b/drivers/acpi/processor_core.c
@@ -844,7 +844,7 @@ static int acpi_processor_add(struct acpi_device *device)
 	if (!pr)
 		return -ENOMEM;
 
-	if (!alloc_cpumask_var(&pr->throttling.shared_cpu_map, GFP_KERNEL)) {
+	if (!zalloc_cpumask_var(&pr->throttling.shared_cpu_map, GFP_KERNEL)) {
 		kfree(pr);
 		return -ENOMEM;
 	}
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index 6fe121434ff..10a2d913635 100644
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -148,6 +148,9 @@ static void acpi_timer_check_state(int state, struct acpi_processor *pr,
 	if (cpu_has(&cpu_data(pr->id), X86_FEATURE_ARAT))
 		return;
 
+	if (boot_cpu_has(X86_FEATURE_AMDC1E))
+		type = ACPI_STATE_C1;
+
 	/*
 	 * Check, if one of the previous states already marked the lapic
 	 * unstable
@@ -202,21 +205,44 @@ static void acpi_state_timer_broadcast(struct acpi_processor *pr,
  * Suspend / resume control
  */
 static int acpi_idle_suspend;
+static u32 saved_bm_rld;
+
+static void acpi_idle_bm_rld_save(void)
+{
+	acpi_read_bit_register(ACPI_BITREG_BUS_MASTER_RLD, &saved_bm_rld);
+}
+static void acpi_idle_bm_rld_restore(void)
+{
+	u32 resumed_bm_rld;
+
+	acpi_read_bit_register(ACPI_BITREG_BUS_MASTER_RLD, &resumed_bm_rld);
+
+	if (resumed_bm_rld != saved_bm_rld)
+		acpi_write_bit_register(ACPI_BITREG_BUS_MASTER_RLD, saved_bm_rld);
+}
 
 int acpi_processor_suspend(struct acpi_device * device, pm_message_t state)
 {
+	if (acpi_idle_suspend == 1)
+		return 0;
+
+	acpi_idle_bm_rld_save();
 	acpi_idle_suspend = 1;
 	return 0;
 }
 
 int acpi_processor_resume(struct acpi_device * device)
 {
+	if (acpi_idle_suspend == 0)
+		return 0;
+
+	acpi_idle_bm_rld_restore();
 	acpi_idle_suspend = 0;
 	return 0;
 }
 
 #if defined (CONFIG_GENERIC_TIME) && defined (CONFIG_X86)
-static int tsc_halts_in_c(int state)
+static void tsc_check_state(int state)
 {
 	switch (boot_cpu_data.x86_vendor) {
 	case X86_VENDOR_AMD:
@@ -226,13 +252,17 @@ static int tsc_halts_in_c(int state)
 		 * C/P/S0/S1 states when this bit is set.
 		 */
 		if (boot_cpu_has(X86_FEATURE_NONSTOP_TSC))
-			return 0;
+			return;
 
 		/*FALL THROUGH*/
 	default:
-		return state > ACPI_STATE_C1;
+		/* TSC could halt in idle, so notify users */
+		if (state > ACPI_STATE_C1)
+			mark_tsc_unstable("TSC halts in idle");
 	}
 }
+#else
+static void tsc_check_state(int state) { return; }
 #endif
 
 static int acpi_processor_get_power_info_fadt(struct acpi_processor *pr)
@@ -578,12 +608,13 @@ static int acpi_processor_power_verify(struct acpi_processor *pr)
 
 	pr->power.timer_broadcast_on_state = INT_MAX;
 
-	for (i = 1; i < ACPI_PROCESSOR_MAX_POWER; i++) {
+	for (i = 1; i < ACPI_PROCESSOR_MAX_POWER && i <= max_cstate; i++) {
 		struct acpi_processor_cx *cx = &pr->power.states[i];
 
 		switch (cx->type) {
 		case ACPI_STATE_C1:
 			cx->valid = 1;
+			acpi_timer_check_state(i, pr, cx);
 			break;
 
 		case ACPI_STATE_C2:
@@ -598,6 +629,8 @@ static int acpi_processor_power_verify(struct acpi_processor *pr)
 				acpi_timer_check_state(i, pr, cx);
 			break;
 		}
+		if (cx->valid)
+			tsc_check_state(cx->type);
 
 		if (cx->valid)
 			working++;
@@ -657,11 +690,9 @@ static int acpi_processor_power_seq_show(struct seq_file *seq, void *offset)
 
 	seq_printf(seq, "active state:            C%zd\n"
 		   "max_cstate:              C%d\n"
-		   "bus master activity:     %08x\n"
 		   "maximum allowed latency: %d usec\n",
 		   pr->power.state ? pr->power.state - pr->power.states : 0,
-		   max_cstate, (unsigned)pr->power.bm_activity,
-		   pm_qos_requirement(PM_QOS_CPU_DMA_LATENCY));
+		   max_cstate, pm_qos_requirement(PM_QOS_CPU_DMA_LATENCY));
 
 	seq_puts(seq, "states:\n");
 
@@ -803,11 +834,12 @@ static int acpi_idle_enter_c1(struct cpuidle_device *dev,
 
 	/* Do not access any ACPI IO ports in suspend path */
 	if (acpi_idle_suspend) {
-		acpi_safe_halt();
 		local_irq_enable();
+		cpu_relax();
 		return 0;
 	}
 
+	acpi_state_timer_broadcast(pr, cx, 1);
 	kt1 = ktime_get_real();
 	acpi_idle_do_entry(cx);
 	kt2 = ktime_get_real();
@@ -815,6 +847,7 @@ static int acpi_idle_enter_c1(struct cpuidle_device *dev,
 
 	local_irq_enable();
 	cx->usage++;
+	acpi_state_timer_broadcast(pr, cx, 0);
 
 	return idle_time;
 }
@@ -871,11 +904,6 @@ static int acpi_idle_enter_simple(struct cpuidle_device *dev,
 	kt2 = ktime_get_real();
 	idle_time =  ktime_to_us(ktime_sub(kt2, kt1));
 
-#if defined (CONFIG_GENERIC_TIME) && defined (CONFIG_X86)
-	/* TSC could halt in idle, so notify users */
-	if (tsc_halts_in_c(cx->type))
-		mark_tsc_unstable("TSC halts in idle");;
-#endif
 	sleep_ticks = us_to_pm_timer_ticks(idle_time);
 
 	/* Tell the scheduler how much we idled: */
@@ -955,6 +983,7 @@ static int acpi_idle_enter_bm(struct cpuidle_device *dev,
 	 */
 	acpi_state_timer_broadcast(pr, cx, 1);
 
+	kt1 = ktime_get_real();
 	/*
 	 * disable bus master
 	 * bm_check implies we need ARB_DIS
@@ -976,10 +1005,7 @@ static int acpi_idle_enter_bm(struct cpuidle_device *dev,
 		ACPI_FLUSH_CPU_CACHE();
 	}
 
-	kt1 = ktime_get_real();
 	acpi_idle_do_entry(cx);
-	kt2 = ktime_get_real();
-	idle_time =  ktime_to_us(ktime_sub(kt2, kt1));
 
 	/* Re-enable bus master arbitration */
 	if (pr->flags.bm_check && pr->flags.bm_control) {
@@ -988,12 +1014,9 @@ static int acpi_idle_enter_bm(struct cpuidle_device *dev,
 		c3_cpu_count--;
 		spin_unlock(&c3_lock);
 	}
+	kt2 = ktime_get_real();
+	idle_time =  ktime_to_us(ktime_sub(kt2, kt1));
 
-#if defined (CONFIG_GENERIC_TIME) && defined (CONFIG_X86)
-	/* TSC could halt in idle, so notify users */
-	if (tsc_halts_in_c(ACPI_STATE_C3))
-		mark_tsc_unstable("TSC halts in idle");
-#endif
 	sleep_ticks = us_to_pm_timer_ticks(idle_time);
 	/* Tell the scheduler how much we idled: */
 	sched_clock_idle_wakeup_event(sleep_ticks*PM_TIMER_TICK_NS);
@@ -1037,6 +1060,9 @@ static int acpi_processor_setup_cpuidle(struct acpi_processor *pr)
 		dev->states[i].desc[0] = '\0';
 	}
 
+	if (max_cstate == 0)
+		max_cstate = 1;
+
 	for (i = 1; i < ACPI_PROCESSOR_MAX_POWER && i <= max_cstate; i++) {
 		cx = &pr->power.states[i];
 		state = &dev->states[count];
diff --git a/drivers/acpi/processor_perflib.c b/drivers/acpi/processor_perflib.c
index cafb41000f6..60e543d3234 100644
--- a/drivers/acpi/processor_perflib.c
+++ b/drivers/acpi/processor_perflib.c
@@ -309,9 +309,15 @@ static int acpi_processor_get_performance_states(struct acpi_processor *pr)
 				  (u32) px->bus_master_latency,
 				  (u32) px->control, (u32) px->status));
 
-		if (!px->core_frequency) {
-			printk(KERN_ERR PREFIX
-				    "Invalid _PSS data: freq is zero\n");
+		/*
+ 		 * Check that ACPI's u64 MHz will be valid as u32 KHz in cpufreq
+		 */
+		if (!px->core_frequency ||
+		    ((u32)(px->core_frequency * 1000) !=
+		     (px->core_frequency * 1000))) {
+			printk(KERN_ERR FW_BUG PREFIX
+			       "Invalid BIOS _PSS frequency: 0x%llx MHz\n",
+			       px->core_frequency);
 			result = -EFAULT;
 			kfree(pr->performance->states);
 			goto end;
diff --git a/drivers/acpi/processor_throttling.c b/drivers/acpi/processor_throttling.c
index d0d1f4d5043..227543789ba 100644
--- a/drivers/acpi/processor_throttling.c
+++ b/drivers/acpi/processor_throttling.c
@@ -45,6 +45,14 @@
 #define _COMPONENT              ACPI_PROCESSOR_COMPONENT
 ACPI_MODULE_NAME("processor_throttling");
 
+/* ignore_tpc:
+ *  0 -> acpi processor driver doesn't ignore _TPC values
+ *  1 -> acpi processor driver ignores _TPC values
+ */
+static int ignore_tpc;
+module_param(ignore_tpc, int, 0644);
+MODULE_PARM_DESC(ignore_tpc, "Disable broken BIOS _TPC throttling support");
+
 struct throttling_tstate {
 	unsigned int cpu;		/* cpu nr */
 	int target_state;		/* target T-state */
@@ -283,6 +291,10 @@ static int acpi_processor_get_platform_limit(struct acpi_processor *pr)
 
 	if (!pr)
 		return -EINVAL;
+
+	if (ignore_tpc)
+		goto end;
+
 	status = acpi_evaluate_integer(pr->handle, "_TPC", NULL, &tpc);
 	if (ACPI_FAILURE(status)) {
 		if (status != AE_NOT_FOUND) {
@@ -290,6 +302,8 @@ static int acpi_processor_get_platform_limit(struct acpi_processor *pr)
 		}
 		return -ENODEV;
 	}
+
+end:
 	pr->throttling_platform_limit = (int)tpc;
 	return 0;
 }
@@ -302,6 +316,9 @@ int acpi_processor_tstate_has_changed(struct acpi_processor *pr)
 	struct acpi_processor_limit *limit;
 	int target_state;
 
+	if (ignore_tpc)
+		return 0;
+
 	result = acpi_processor_get_platform_limit(pr);
 	if (result) {
 		/* Throttling Limit is unsupported */
@@ -821,6 +838,14 @@ static int acpi_processor_get_throttling_ptc(struct acpi_processor *pr)
 	ret = acpi_read_throttling_status(pr, &value);
 	if (ret >= 0) {
 		state = acpi_get_throttling_state(pr, value);
+		if (state == -1) {
+			ACPI_WARNING((AE_INFO,
+				"Invalid throttling state, reset"));
+			state = 0;
+			ret = acpi_processor_set_throttling(pr, state);
+			if (ret)
+				return ret;
+		}
 		pr->throttling.state = state;
 	}
 
diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c
index d060e6fd7fd..01574a06653 100644
--- a/drivers/acpi/sleep.c
+++ b/drivers/acpi/sleep.c
@@ -713,6 +713,32 @@ static void acpi_power_off(void)
 	acpi_enter_sleep_state(ACPI_STATE_S5);
 }
 
+/*
+ * ACPI 2.0 created the optional _GTS and _BFS,
+ * but industry adoption has been neither rapid nor broad.
+ *
+ * Linux gets into trouble when it executes poorly validated
+ * paths through the BIOS, so disable _GTS and _BFS by default,
+ * but do speak up and offer the option to enable them.
+ */
+void __init acpi_gts_bfs_check(void)
+{
+	acpi_handle dummy;
+
+	if (ACPI_SUCCESS(acpi_get_handle(ACPI_ROOT_OBJECT, METHOD_NAME__GTS, &dummy)))
+	{
+		printk(KERN_NOTICE PREFIX "BIOS offers _GTS\n");
+		printk(KERN_NOTICE PREFIX "If \"acpi.gts=1\" improves suspend, "
+			"please notify linux-acpi@vger.kernel.org\n");
+	}
+	if (ACPI_SUCCESS(acpi_get_handle(ACPI_ROOT_OBJECT, METHOD_NAME__BFS, &dummy)))
+	{
+		printk(KERN_NOTICE PREFIX "BIOS offers _BFS\n");
+		printk(KERN_NOTICE PREFIX "If \"acpi.bfs=1\" improves resume, "
+			"please notify linux-acpi@vger.kernel.org\n");
+	}
+}
+
 int __init acpi_sleep_init(void)
 {
 	acpi_status status;
@@ -771,5 +797,6 @@ int __init acpi_sleep_init(void)
 	 * object can also be evaluated when the system enters S5.
 	 */
 	register_reboot_notifier(&tts_notifier);
+	acpi_gts_bfs_check();
 	return 0;
 }
diff --git a/drivers/acpi/system.c b/drivers/acpi/system.c
index da51f05ef8d..0944daec064 100644
--- a/drivers/acpi/system.c
+++ b/drivers/acpi/system.c
@@ -38,6 +38,7 @@ ACPI_MODULE_NAME("system");
 #define ACPI_SYSTEM_DEVICE_NAME		"System"
 
 u32 acpi_irq_handled;
+u32 acpi_irq_not_handled;
 
 /*
  * Make ACPICA version work as module param
@@ -214,8 +215,9 @@ err:
 
 #define COUNT_GPE 0
 #define COUNT_SCI 1	/* acpi_irq_handled */
-#define COUNT_ERROR 2	/* other */
-#define NUM_COUNTERS_EXTRA 3
+#define COUNT_SCI_NOT 2	/* acpi_irq_not_handled */
+#define COUNT_ERROR 3	/* other */
+#define NUM_COUNTERS_EXTRA 4
 
 struct event_counter {
 	u32 count;
@@ -317,6 +319,8 @@ static ssize_t counter_show(struct kobject *kobj,
 
 	all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI].count =
 		acpi_irq_handled;
+	all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI_NOT].count =
+		acpi_irq_not_handled;
 	all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_GPE].count =
 		acpi_gpe_count;
 
@@ -363,6 +367,7 @@ static ssize_t counter_set(struct kobject *kobj,
 			all_counters[i].count = 0;
 		acpi_gpe_count = 0;
 		acpi_irq_handled = 0;
+		acpi_irq_not_handled = 0;
 		goto end;
 	}
 
@@ -456,6 +461,8 @@ void acpi_irq_stats_init(void)
 			sprintf(buffer, "gpe_all");
 		else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI)
 			sprintf(buffer, "sci");
+		else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI_NOT)
+			sprintf(buffer, "sci_not");
 		else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_ERROR)
 			sprintf(buffer, "error");
 		else
diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c
index 9cd15e8c893..564ea142428 100644
--- a/drivers/acpi/thermal.c
+++ b/drivers/acpi/thermal.c
@@ -909,7 +909,7 @@ static int acpi_thermal_register_thermal_zone(struct acpi_thermal *tz)
 			thermal_zone_device_register("acpitz", trips, tz,
 						     &acpi_thermal_zone_ops,
 						     0, 0, 0,
-						     tz->polling_frequency);
+						     tz->polling_frequency*100);
 	if (IS_ERR(tz->thermal_zone))
 		return -ENODEV;
 
diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index cd4fb7543a9..1bdfb37377e 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -538,6 +538,57 @@ acpi_video_device_lcd_set_level(struct acpi_video_device *device, int level)
 	return -EINVAL;
 }
 
+/*
+ * For some buggy _BQC methods, we need to add a constant value to
+ * the _BQC return value to get the actual current brightness level
+ */
+
+static int bqc_offset_aml_bug_workaround;
+static int __init video_set_bqc_offset(const struct dmi_system_id *d)
+{
+	bqc_offset_aml_bug_workaround = 9;
+	return 0;
+}
+
+static struct dmi_system_id video_dmi_table[] __initdata = {
+	/*
+	 * Broken _BQC workaround http://bugzilla.kernel.org/show_bug.cgi?id=13121
+	 */
+	{
+	 .callback = video_set_bqc_offset,
+	 .ident = "Acer Aspire 5720",
+	 .matches = {
+		DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
+		DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5720"),
+		},
+	},
+	{
+	 .callback = video_set_bqc_offset,
+	 .ident = "Acer Aspire 5710Z",
+	 .matches = {
+		DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
+		DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5710Z"),
+		},
+	},
+	{
+	 .callback = video_set_bqc_offset,
+	 .ident = "eMachines E510",
+	 .matches = {
+		DMI_MATCH(DMI_BOARD_VENDOR, "EMACHINES"),
+		DMI_MATCH(DMI_PRODUCT_NAME, "eMachines E510"),
+		},
+	},
+	{
+	 .callback = video_set_bqc_offset,
+	 .ident = "Acer Aspire 5315",
+	 .matches = {
+		DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
+		DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5315"),
+		},
+	},
+	{}
+};
+
 static int
 acpi_video_device_lcd_get_level_current(struct acpi_video_device *device,
 					unsigned long long *level)
@@ -557,6 +608,7 @@ acpi_video_device_lcd_get_level_current(struct acpi_video_device *device,
 				*level = device->brightness->levels[*level + 2];
 
 			}
+			*level += bqc_offset_aml_bug_workaround;
 			device->brightness->curr = *level;
 			return 0;
 		} else {
@@ -770,10 +822,12 @@ acpi_video_init_brightness(struct acpi_video_device *device)
 	 * In this case, the first two elements in _BCL packages
 	 * are also supported brightness levels that OS should take care of.
 	 */
-	for (i = 2; i < count; i++)
-		if (br->levels[i] == br->levels[0] ||
-		    br->levels[i] == br->levels[1])
+	for (i = 2; i < count; i++) {
+		if (br->levels[i] == br->levels[0])
 			level_ac_battery++;
+		if (br->levels[i] == br->levels[1])
+			level_ac_battery++;
+	}
 
 	if (level_ac_battery < 2) {
 		level_ac_battery = 2 - level_ac_battery;
@@ -807,12 +861,19 @@ acpi_video_init_brightness(struct acpi_video_device *device)
 	br->flags._BCM_use_index = br->flags._BCL_use_index;
 
 	/* _BQC uses INDEX while _BCL uses VALUE in some laptops */
-	br->curr = max_level;
+	br->curr = level_old = max_level;
+
+	if (!device->cap._BQC)
+		goto set_level;
+
 	result = acpi_video_device_lcd_get_level_current(device, &level_old);
 	if (result)
 		goto out_free_levels;
 
-	result = acpi_video_device_lcd_set_level(device, br->curr);
+	/*
+	 * Set the level to maximum and check if _BQC uses indexed value
+	 */
+	result = acpi_video_device_lcd_set_level(device, max_level);
 	if (result)
 		goto out_free_levels;
 
@@ -820,25 +881,19 @@ acpi_video_init_brightness(struct acpi_video_device *device)
 	if (result)
 		goto out_free_levels;
 
-	if ((level != level_old) && !br->flags._BCM_use_index) {
-		/* Note:
-		 * This piece of code does not work correctly if the current
-		 * brightness levels is 0.
-		 * But I guess boxes that boot with such a dark screen are rare
-		 * and no more code is needed to cover this specifial case.
-		 */
-
-		if (level_ac_battery != 2) {
-			/*
-			 * For now, we don't support the _BCL like this:
-			 * 16, 15, 0, 1, 2, 3, ..., 14, 15, 16
-			 * because we may mess up the index returned by _BQC.
-			 * Plus: we have not got a box like this.
-			 */
-			ACPI_ERROR((AE_INFO, "_BCL not supported\n"));
-		}
-		br->flags._BQC_use_index = 1;
-	}
+	br->flags._BQC_use_index = (level == max_level ? 0 : 1);
+
+	if (!br->flags._BQC_use_index)
+		goto set_level;
+
+	if (br->flags._BCL_reversed)
+		level_old = (br->count - 1) - level_old;
+	level_old = br->levels[level_old];
+
+set_level:
+	result = acpi_video_device_lcd_set_level(device, level_old);
+	if (result)
+		goto out_free_levels;
 
 	ACPI_DEBUG_PRINT((ACPI_DB_INFO,
 			  "found %d brightness levels\n", count - 2));
@@ -2287,13 +2342,15 @@ EXPORT_SYMBOL(acpi_video_register);
 
 static int __init acpi_video_init(void)
 {
+	dmi_check_system(video_dmi_table);
+
 	if (intel_opregion_present())
 		return 0;
 
 	return acpi_video_register();
 }
 
-static void __exit acpi_video_exit(void)
+void acpi_video_exit(void)
 {
 
 	acpi_bus_unregister_driver(&acpi_video_bus);
@@ -2302,6 +2359,7 @@ static void __exit acpi_video_exit(void)
 
 	return;
 }
+EXPORT_SYMBOL(acpi_video_exit);
 
 module_init(acpi_video_init);
 module_exit(acpi_video_exit);