20 files changed, 447 insertions, 176 deletions

diff --git a/drivers/acpi/asus_acpi.c b/drivers/acpi/asus_acpi.c
index d915fec9bf6..d25ef961415 100644
--- a/drivers/acpi/asus_acpi.c
+++ b/drivers/acpi/asus_acpi.c
@@ -142,6 +142,7 @@ struct asus_hotk {
 		xxN,		//M2400N, M3700N, M5200N, M6800N, S1300N, S5200N
 		A4S,            //Z81sp
 		//(Centrino)
+		F3Sa,
 		END_MODEL
 	} model;		//Models currently supported
 	u16 event_count[128];	//count for each event TODO make this better
@@ -405,7 +406,20 @@ static struct model_data model_conf[END_MODEL] = {
 		.brightness_get    = "GPLV",
 		.mt_bt_switch      = "BLED",
 		.mt_wled           = "WLED"
-	}
+	},
+
+	{
+		.name		= "F3Sa",
+		.mt_bt_switch	= "BLED",
+		.mt_wled	= "WLED",
+		.mt_mled	= "MLED",
+		.brightness_get	= "GPLV",
+		.brightness_set	= "SPLV",
+		.mt_lcd_switch	= "\\_SB.PCI0.SBRG.EC0._Q10",
+		.lcd_status	= "\\_SB.PCI0.SBRG.EC0.RPIN",
+		.display_get	= "\\ADVG",
+		.display_set	= "SDSP",
+	},
 
 };
 
@@ -710,15 +724,8 @@ static int get_lcd_state(void)
 {
 	int lcd = 0;
 
-	if (hotk->model != L3H) {
-		/* We don't have to check anything if we are here */
-		if (!read_acpi_int(NULL, hotk->methods->lcd_status, &lcd))
-			printk(KERN_WARNING
-			       "Asus ACPI: Error reading LCD status\n");
-
-		if (hotk->model == L2D)
-			lcd = ~lcd;
-	} else {		/* L3H and the like have to be handled differently */
+	if (hotk->model == L3H) {
+		/* L3H and the like have to be handled differently */
 		acpi_status status = 0;
 		struct acpi_object_list input;
 		union acpi_object mt_params[2];
@@ -745,6 +752,32 @@ static int get_lcd_state(void)
 		if (out_obj.type == ACPI_TYPE_INTEGER)
 			/* That's what the AML code does */
 			lcd = out_obj.integer.value >> 8;
+	} else if (hotk->model == F3Sa) {
+		unsigned long tmp;
+		union acpi_object param;
+		struct acpi_object_list input;
+		acpi_status status;
+
+		/* Read pin 11 */
+		param.type = ACPI_TYPE_INTEGER;
+		param.integer.value = 0x11;
+		input.count = 1;
+		input.pointer = &param;
+
+		status = acpi_evaluate_integer(NULL, hotk->methods->lcd_status,
+						&input, &tmp);
+		if (status != AE_OK)
+			return -1;
+
+		lcd = tmp;
+	} else {
+		/* We don't have to check anything if we are here */
+		if (!read_acpi_int(NULL, hotk->methods->lcd_status, &lcd))
+			printk(KERN_WARNING
+			       "Asus ACPI: Error reading LCD status\n");
+
+		if (hotk->model == L2D)
+			lcd = ~lcd;
 	}
 
 	return (lcd & 1);
@@ -1134,6 +1167,8 @@ static int asus_model_match(char *model)
 		return W5A;
 	else if (strncmp(model, "A4S", 3) == 0)
 		return A4S;
+	else if (strncmp(model, "F3Sa", 4) == 0)
+		return F3Sa;
 	else
 		return END_MODEL;
 }
diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c
index c4a769d1ba8..f6215e80980 100644
--- a/drivers/acpi/battery.c
+++ b/drivers/acpi/battery.c
@@ -194,6 +194,9 @@ static int acpi_battery_get_property(struct power_supply *psy,
 	case POWER_SUPPLY_PROP_MANUFACTURER:
 		val->strval = battery->oem_info;
 		break;
+	case POWER_SUPPLY_PROP_SERIAL_NUMBER:
+		val->strval = battery->serial_number;
+		break;
 	default:
 		return -EINVAL;
 	}
@@ -212,6 +215,7 @@ static enum power_supply_property charge_battery_props[] = {
 	POWER_SUPPLY_PROP_CHARGE_NOW,
 	POWER_SUPPLY_PROP_MODEL_NAME,
 	POWER_SUPPLY_PROP_MANUFACTURER,
+	POWER_SUPPLY_PROP_SERIAL_NUMBER,
 };
 
 static enum power_supply_property energy_battery_props[] = {
@@ -226,6 +230,7 @@ static enum power_supply_property energy_battery_props[] = {
 	POWER_SUPPLY_PROP_ENERGY_NOW,
 	POWER_SUPPLY_PROP_MODEL_NAME,
 	POWER_SUPPLY_PROP_MANUFACTURER,
+	POWER_SUPPLY_PROP_SERIAL_NUMBER,
 };
 #endif
 
diff --git a/drivers/acpi/bay.c b/drivers/acpi/bay.c
index 6daf6088ac8..477711435b2 100644
--- a/drivers/acpi/bay.c
+++ b/drivers/acpi/bay.c
@@ -46,6 +46,12 @@ MODULE_LICENSE("GPL");
 	printk(KERN_DEBUG PREFIX "%s: %s\n", prefix, s); }
 static void bay_notify(acpi_handle handle, u32 event, void *data);
 
+static const struct acpi_device_id bay_device_ids[] = {
+	{"LNXIOBAY", 0},
+	{"", 0},
+};
+MODULE_DEVICE_TABLE(acpi, bay_device_ids);
+
 struct bay {
 	acpi_handle handle;
 	char *name;
diff --git a/drivers/acpi/blacklist.c b/drivers/acpi/blacklist.c
index 8809654d6cc..6dbaa2d15fe 100644
--- a/drivers/acpi/blacklist.c
+++ b/drivers/acpi/blacklist.c
@@ -70,8 +70,6 @@ static struct acpi_blacklist_item acpi_blacklist[] __initdata = {
 	/* IBM 600E - _ADR should return 7, but it returns 1 */
 	{"IBM   ", "TP600E  ", 0x00000105, ACPI_SIG_DSDT, less_than_or_equal,
 	 "Incorrect _ADR", 1},
-	{"ASUS\0\0", "P2B-S   ", 0, ACPI_SIG_DSDT, all_versions,
-	 "Bogus PCI routing", 1},
 
 	{""}
 };
@@ -208,33 +206,35 @@ static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
 	 * Disable OSI(Linux) warnings on all "Acer, inc."
 	 *
 	 * _OSI(Linux) disables the latest Windows BIOS code:
+	 * DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"),
 	 * DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5050"),
+	 * DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
 	 * DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5580"),
 	 * DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 3010"),
 	 * _OSI(Linux) effect unknown:
 	 * DMI_MATCH(DMI_PRODUCT_NAME, "Ferrari 5000"),
 	 */
-	{
-	.callback = dmi_disable_osi_linux,
-	.ident = "Acer, inc.",
-	.matches = {
-		     DMI_MATCH(DMI_SYS_VENDOR, "Acer, inc."),
-		},
-	},
+	/*
+	 * note that dmi_check_system() uses strstr()
+	 * to match sub-strings rather than !strcmp(),
+	 * so "Acer" below matches "Acer, inc." above.
+	 */
 	/*
 	 * Disable OSI(Linux) warnings on all "Acer"
 	 *
 	 * _OSI(Linux) effect unknown:
-	 * DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
 	 * DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
 	 * DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 7720Z"),
 	 * DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 5520"),
 	 * DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 6460"),
 	 * DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 7510"),
 	 * DMI_MATCH(DMI_PRODUCT_NAME, "Extensa 5220"),
+	 *
+	 * _OSI(Linux) is a NOP:
+	 * DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5315"),
 	 */
 	{
-	.callback = dmi_unknown_osi_linux,
+	.callback = dmi_disable_osi_linux,
 	.ident = "Acer",
 	.matches = {
 		     DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
@@ -242,21 +242,22 @@ static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
 	},
 	/*
 	 * Disable OSI(Linux) warnings on all "Apple Computer, Inc."
+	 * Disable OSI(Linux) warnings on all "Apple Inc."
 	 *
 	 * _OSI(Linux) confirmed to be a NOP:
 	 * DMI_MATCH(DMI_PRODUCT_NAME, "MacBook1,1"),
 	 * DMI_MATCH(DMI_PRODUCT_NAME, "MacBook2,1"),
 	 * DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro2,2"),
+	 * DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro3,1"),
 	 * _OSI(Linux) effect unknown:
 	 * DMI_MATCH(DMI_PRODUCT_NAME, "MacPro2,1"),
 	 * DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro1,1"),
-	 * DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro3,1"),
 	 */
 	{
 	.callback = dmi_disable_osi_linux,
 	.ident = "Apple",
 	.matches = {
-		     DMI_MATCH(DMI_SYS_VENDOR, "Apple Computer, Inc."),
+		     DMI_MATCH(DMI_SYS_VENDOR, "Apple"),
 		},
 	},
 	/*
@@ -294,13 +295,13 @@ static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
 	 * DMI_MATCH(DMI_BOARD_NAME, "IFL91"),
 	 */
 	{
-	.callback = dmi_unknown_osi_linux,
+	.callback = dmi_disable_osi_linux,
 	.ident = "Compal",
 	.matches = {
 		     DMI_MATCH(DMI_BIOS_VENDOR, "COMPAL"),
 		},
 	},
-	{ /* OSI(Linux) touches USB, breaks suspend to disk */
+	{ /* OSI(Linux) touches USB, unknown side-effect */
 	.callback = dmi_disable_osi_linux,
 	.ident = "Dell Dimension 5150",
 	.matches = {
@@ -310,7 +311,7 @@ static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
 	},
 	{ /* OSI(Linux) is a NOP */
 	.callback = dmi_disable_osi_linux,
-	.ident = "Dell",
+	.ident = "Dell i1501",
 	.matches = {
 		     DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 		     DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1501"),
@@ -318,7 +319,7 @@ static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
 	},
 	{ /* OSI(Linux) effect unknown */
 	.callback = dmi_unknown_osi_linux,
-	.ident = "Dell",
+	.ident = "Dell Latitude D830",
 	.matches = {
 		     DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 		     DMI_MATCH(DMI_PRODUCT_NAME, "Latitude D830"),
@@ -326,7 +327,7 @@ static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
 	},
 	{ /* OSI(Linux) effect unknown */
 	.callback = dmi_unknown_osi_linux,
-	.ident = "Dell",
+	.ident = "Dell OP GX620",
 	.matches = {
 		     DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 		     DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex GX620"),
@@ -334,15 +335,23 @@ static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
 	},
 	{ /* OSI(Linux) effect unknown */
 	.callback = dmi_unknown_osi_linux,
-	.ident = "Dell",
+	.ident = "Dell PE 1900",
 	.matches = {
 		     DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 		     DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge 1900"),
 		},
 	},
+	{ /* OSI(Linux) is a NOP */
+	.callback = dmi_disable_osi_linux,
+	.ident = "Dell PE R200",
+	.matches = {
+		     DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+		     DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge R200"),
+		},
+	},
 	{ /* OSI(Linux) touches USB */
 	.callback = dmi_disable_osi_linux,
-	.ident = "Dell",
+	.ident = "Dell PR 390",
 	.matches = {
 		     DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 		     DMI_MATCH(DMI_PRODUCT_NAME, "Precision WorkStation 390"),
@@ -358,7 +367,7 @@ static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
 	},
 	{ /* OSI(Linux) effect unknown */
 	.callback = dmi_unknown_osi_linux,
-	.ident = "Dell",
+	.ident = "Dell PE SC440",
 	.matches = {
 		     DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 		     DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge SC440"),
@@ -474,6 +483,11 @@ static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
 	 *
 	 * _OSI(Linux) confirmed to be a NOP:
 	 * DMI_MATCH(DMI_PRODUCT_NAME, "P1-J150B"),
+	 * with DMI_MATCH(DMI_BOARD_NAME, "ROCKY"),
+	 *
+	 * unknown:
+	 * DMI_MATCH(DMI_PRODUCT_NAME, "S1-MDGDG"),
+	 * with DMI_MATCH(DMI_BOARD_NAME, "ROCKY"),
 	 */
 	{
 	.callback = dmi_disable_osi_linux,
@@ -516,7 +530,7 @@ static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
 	 * DMI_MATCH(DMI_PRODUCT_NAME, "VGN-FZ11M"),
 	 */
 	{
-	.callback = dmi_unknown_osi_linux,
+	.callback = dmi_disable_osi_linux,
 	.ident = "Sony",
 	.matches = {
 		     DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
diff --git a/drivers/acpi/debug.c b/drivers/acpi/debug.c
index bf513e07b77..6df564f4ca6 100644
--- a/drivers/acpi/debug.c
+++ b/drivers/acpi/debug.c
@@ -130,6 +130,63 @@ static int param_get_debug_level(char *buffer, struct kernel_param *kp) {
 module_param_call(debug_layer, param_set_uint, param_get_debug_layer, &acpi_dbg_layer, 0644);
 module_param_call(debug_level, param_set_uint, param_get_debug_level, &acpi_dbg_level, 0644);
 
+static char trace_method_name[6];
+module_param_string(trace_method_name, trace_method_name, 6, 0644);
+static unsigned int trace_debug_layer;
+module_param(trace_debug_layer, uint, 0644);
+static unsigned int trace_debug_level;
+module_param(trace_debug_level, uint, 0644);
+
+static int param_set_trace_state(const char *val, struct kernel_param *kp)
+{
+	int result = 0;
+
+	if (!strncmp(val, "enable", strlen("enable") - 1)) {
+		result = acpi_debug_trace(trace_method_name, trace_debug_level,
+					  trace_debug_layer, 0);
+		if (result)
+			result = -EBUSY;
+		goto exit;
+	}
+
+	if (!strncmp(val, "disable", strlen("disable") - 1)) {
+		int name = 0;
+		result = acpi_debug_trace((char *)&name, trace_debug_level,
+					  trace_debug_layer, 0);
+		if (result)
+			result = -EBUSY;
+		goto exit;
+	}
+
+	if (!strncmp(val, "1", 1)) {
+		result = acpi_debug_trace(trace_method_name, trace_debug_level,
+					  trace_debug_layer, 1);
+		if (result)
+			result = -EBUSY;
+		goto exit;
+	}
+
+	result = -EINVAL;
+exit:
+	return result;
+}
+
+static int param_get_trace_state(char *buffer, struct kernel_param *kp)
+{
+	if (!acpi_gbl_trace_method_name)
+		return sprintf(buffer, "disable");
+	else {
+		if (acpi_gbl_trace_flags & 1)
+			return sprintf(buffer, "1");
+		else
+			return sprintf(buffer, "enable");
+	}
+	return 0;
+}
+
+module_param_call(trace_state, param_set_trace_state, param_get_trace_state,
+		  NULL, 0644);
+
 /* --------------------------------------------------------------------------
                               FS Interface (/proc)
    -------------------------------------------------------------------------- */
diff --git a/drivers/acpi/dock.c b/drivers/acpi/dock.c
index 1dabdf4c07b..b3dec2101e2 100644
--- a/drivers/acpi/dock.c
+++ b/drivers/acpi/dock.c
@@ -51,6 +51,12 @@ static struct atomic_notifier_head dock_notifier_list;
 static struct platform_device *dock_device;
 static char dock_device_name[] = "dock";
 
+static const struct acpi_device_id dock_device_ids[] = {
+	{"LNXDOCK", 0},
+	{"", 0},
+};
+MODULE_DEVICE_TABLE(acpi, dock_device_ids);
+
 struct dock_station {
 	acpi_handle handle;
 	unsigned long last_dock_time;
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index 987b967c746..7222a18a031 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -573,7 +573,7 @@ acpi_ec_space_handler(u32 function, acpi_physical_address address,
 		      void *handler_context, void *region_context)
 {
 	struct acpi_ec *ec = handler_context;
-	int result = 0, i = 0;
+	int result = 0, i;
 	u8 temp = 0;
 
 	if ((address > 0xFF) || !value || !handler_context)
@@ -585,7 +585,18 @@ acpi_ec_space_handler(u32 function, acpi_physical_address address,
 	if (bits != 8 && acpi_strict)
 		return AE_BAD_PARAMETER;
 
-	while (bits - i > 0) {
+	acpi_ec_burst_enable(ec);
+
+	if (function == ACPI_READ) {
+		result = acpi_ec_read(ec, address, &temp);
+		*value = temp;
+	} else {
+		temp = 0xff & (*value);
+		result = acpi_ec_write(ec, address, temp);
+	}
+
+	for (i = 8; unlikely(bits - i > 0); i += 8) {
+		++address;
 		if (function == ACPI_READ) {
 			result = acpi_ec_read(ec, address, &temp);
 			(*value) |= ((acpi_integer)temp) << i;
@@ -593,10 +604,10 @@ acpi_ec_space_handler(u32 function, acpi_physical_address address,
 			temp = 0xff & ((*value) >> i);
 			result = acpi_ec_write(ec, address, temp);
 		}
-		i += 8;
-		++address;
 	}
 
+	acpi_ec_burst_disable(ec);
+
 	switch (result) {
 	case -EINVAL:
 		return AE_BAD_PARAMETER;
diff --git a/drivers/acpi/events/evgpe.c b/drivers/acpi/events/evgpe.c
index e22f4a973c0..31cb8cd8cab 100644
--- a/drivers/acpi/events/evgpe.c
+++ b/drivers/acpi/events/evgpe.c
@@ -270,18 +270,18 @@ acpi_status acpi_ev_disable_gpe(struct acpi_gpe_event_info *gpe_event_info)
 	case ACPI_GPE_TYPE_WAKE_RUN:
 		ACPI_CLEAR_BIT(gpe_event_info->flags, ACPI_GPE_WAKE_ENABLED);
 
-		/*lint -fallthrough */
+		/* fallthrough */
 
 	case ACPI_GPE_TYPE_RUNTIME:
 
 		/* Disable the requested runtime GPE */
 
 		ACPI_CLEAR_BIT(gpe_event_info->flags, ACPI_GPE_RUN_ENABLED);
-		status = acpi_hw_write_gpe_enable_reg(gpe_event_info);
-		break;
+
+		/* fallthrough */
 
 	default:
-		return_ACPI_STATUS(AE_BAD_PARAMETER);
+		acpi_hw_write_gpe_enable_reg(gpe_event_info);
 	}
 
 	return_ACPI_STATUS(AE_OK);
@@ -501,6 +501,7 @@ u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info * gpe_xrupt_list)
  *              an interrupt handler.
  *
  ******************************************************************************/
+static void acpi_ev_asynch_enable_gpe(void *context);
 
 static void ACPI_SYSTEM_XFACE acpi_ev_asynch_execute_gpe_method(void *context)
 {
@@ -576,22 +577,30 @@ static void ACPI_SYSTEM_XFACE acpi_ev_asynch_execute_gpe_method(void *context)
 					 method_node)));
 		}
 	}
+	/* Defer enabling of GPE until all notify handlers are done */
+	acpi_os_execute(OSL_NOTIFY_HANDLER, acpi_ev_asynch_enable_gpe,
+				gpe_event_info);
+	return_VOID;
+}
 
-	if ((local_gpe_event_info.flags & ACPI_GPE_XRUPT_TYPE_MASK) ==
+static void acpi_ev_asynch_enable_gpe(void *context)
+{
+	struct acpi_gpe_event_info *gpe_event_info = context;
+	acpi_status status;
+	if ((gpe_event_info->flags & ACPI_GPE_XRUPT_TYPE_MASK) ==
 	    ACPI_GPE_LEVEL_TRIGGERED) {
 		/*
 		 * GPE is level-triggered, we clear the GPE status bit after
 		 * handling the event.
 		 */
-		status = acpi_hw_clear_gpe(&local_gpe_event_info);
+		status = acpi_hw_clear_gpe(gpe_event_info);
 		if (ACPI_FAILURE(status)) {
 			return_VOID;
 		}
 	}
 
 	/* Enable this GPE */
-
-	(void)acpi_hw_write_gpe_enable_reg(&local_gpe_event_info);
+	(void)acpi_hw_write_gpe_enable_reg(gpe_event_info);
 	return_VOID;
 }
 
diff --git a/drivers/acpi/namespace/nsxfeval.c b/drivers/acpi/namespace/nsxfeval.c
index f39fbc6b923..b92133faf5b 100644
--- a/drivers/acpi/namespace/nsxfeval.c
+++ b/drivers/acpi/namespace/nsxfeval.c
@@ -443,6 +443,7 @@ acpi_ns_get_device_callback(acpi_handle obj_handle,
 	struct acpica_device_id hid;
 	struct acpi_compatible_id_list *cid;
 	acpi_native_uint i;
+	int found;
 
 	status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
 	if (ACPI_FAILURE(status)) {
@@ -496,16 +497,19 @@ acpi_ns_get_device_callback(acpi_handle obj_handle,
 
 			/* Walk the CID list */
 
+			found = 0;
 			for (i = 0; i < cid->count; i++) {
 				if (ACPI_STRNCMP(cid->id[i].value, info->hid,
 						 sizeof(struct
-							acpi_compatible_id)) !=
+							acpi_compatible_id)) ==
 				    0) {
-					ACPI_FREE(cid);
-					return (AE_OK);
+					found = 1;
+					break;
 				}
 			}
 			ACPI_FREE(cid);
+			if (!found)
+				return (AE_OK);
 		}
 	}
 
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index e53fb516f9d..0c41db3075a 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -120,7 +120,7 @@ static char osi_additional_string[OSI_STRING_LENGTH_MAX];
  */
 #define OSI_LINUX_ENABLE 0
 
-struct osi_linux {
+static struct osi_linux {
 	unsigned int	enable:1;
 	unsigned int	dmi:1;
 	unsigned int	cmdline:1;
@@ -250,11 +250,16 @@ acpi_physical_address __init acpi_os_get_root_pointer(void)
 			       "System description tables not found\n");
 			return 0;
 		}
-	} else
-		return acpi_find_rsdp();
+	} else {
+		acpi_physical_address pa = 0;
+
+		acpi_find_root_pointer(&pa);
+		return pa;
+	}
 }
 
-void __iomem *acpi_os_map_memory(acpi_physical_address phys, acpi_size size)
+void __iomem *__init_refok
+acpi_os_map_memory(acpi_physical_address phys, acpi_size size)
 {
 	if (phys > ULONG_MAX) {
 		printk(KERN_ERR PREFIX "Cannot map memory that high\n");
@@ -661,25 +666,6 @@ static void acpi_os_execute_deferred(struct work_struct *work)
 	dpc->function(dpc->context);
 	kfree(dpc);
 
-	/* Yield cpu to notify thread */
-	cond_resched();
-
-	return;
-}
-
-static void acpi_os_execute_notify(struct work_struct *work)
-{
-	struct acpi_os_dpc *dpc = container_of(work, struct acpi_os_dpc, work);
-
-	if (!dpc) {
-		printk(KERN_ERR PREFIX "Invalid (NULL) context\n");
-		return;
-	}
-
-	dpc->function(dpc->context);
-
-	kfree(dpc);
-
 	return;
 }
 
@@ -703,7 +689,7 @@ acpi_status acpi_os_execute(acpi_execute_type type,
 {
 	acpi_status status = AE_OK;
 	struct acpi_os_dpc *dpc;
-
+	struct workqueue_struct *queue;
 	ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
 			  "Scheduling function [%p(%p)] for deferred execution.\n",
 			  function, context));
@@ -727,20 +713,13 @@ acpi_status acpi_os_execute(acpi_execute_type type,
 	dpc->function = function;
 	dpc->context = context;
 
-	if (type == OSL_NOTIFY_HANDLER) {
-		INIT_WORK(&dpc->work, acpi_os_execute_notify);
-		if (!queue_work(kacpi_notify_wq, &dpc->work)) {
-			status = AE_ERROR;
-			kfree(dpc);
-		}
-	} else {
-		INIT_WORK(&dpc->work, acpi_os_execute_deferred);
-		if (!queue_work(kacpid_wq, &dpc->work)) {
-			ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
-				  "Call to queue_work() failed.\n"));
-			status = AE_ERROR;
-			kfree(dpc);
-		}
+	INIT_WORK(&dpc->work, acpi_os_execute_deferred);
+	queue = (type == OSL_NOTIFY_HANDLER) ? kacpi_notify_wq : kacpid_wq;
+	if (!queue_work(queue, &dpc->work)) {
+		ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+			  "Call to queue_work() failed.\n"));
+		status = AE_ERROR;
+		kfree(dpc);
 	}
 	return_ACPI_STATUS(status);
 }
@@ -1213,24 +1192,24 @@ acpi_status acpi_os_release_object(acpi_cache_t * cache, void *object)
  *
  *	Returns 0 on success
  */
-int acpi_dmi_dump(void)
+static int acpi_dmi_dump(void)
 {
 
 	if (!dmi_available)
 		return -1;
 
 	printk(KERN_NOTICE PREFIX "DMI System Vendor: %s\n",
-		dmi_get_slot(DMI_SYS_VENDOR));
+		dmi_get_system_info(DMI_SYS_VENDOR));
 	printk(KERN_NOTICE PREFIX "DMI Product Name: %s\n",
-		dmi_get_slot(DMI_PRODUCT_NAME));
+		dmi_get_system_info(DMI_PRODUCT_NAME));
 	printk(KERN_NOTICE PREFIX "DMI Product Version: %s\n",
-		dmi_get_slot(DMI_PRODUCT_VERSION));
+		dmi_get_system_info(DMI_PRODUCT_VERSION));
 	printk(KERN_NOTICE PREFIX "DMI Board Name: %s\n",
-		dmi_get_slot(DMI_BOARD_NAME));
+		dmi_get_system_info(DMI_BOARD_NAME));
 	printk(KERN_NOTICE PREFIX "DMI BIOS Vendor: %s\n",
-		dmi_get_slot(DMI_BIOS_VENDOR));
+		dmi_get_system_info(DMI_BIOS_VENDOR));
 	printk(KERN_NOTICE PREFIX "DMI BIOS Date: %s\n",
-		dmi_get_slot(DMI_BIOS_DATE));
+		dmi_get_system_info(DMI_BIOS_DATE));
 
 	return 0;
 }
diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c
index e48ee4f8749..c53113e1800 100644
--- a/drivers/acpi/processor_core.c
+++ b/drivers/acpi/processor_core.c
@@ -812,11 +812,18 @@ static int is_processor_present(acpi_handle handle)
 
 
 	status = acpi_evaluate_integer(handle, "_STA", NULL, &sta);
-	if (ACPI_FAILURE(status) || !(sta & ACPI_STA_DEVICE_PRESENT)) {
-		ACPI_EXCEPTION((AE_INFO, status, "Processor Device is not present"));
-		return 0;
-	}
-	return 1;
+	/*
+	 * if a processor object does not have an _STA object,
+	 * OSPM assumes that the processor is present.
+	 */
+	if (status == AE_NOT_FOUND)
+		return 1;
+
+	if (ACPI_SUCCESS(status) && (sta & ACPI_STA_DEVICE_PRESENT))
+		return 1;
+
+	ACPI_EXCEPTION((AE_INFO, status, "Processor Device is not present"));
+	return 0;
 }
 
 static
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index 199ea214615..32003fdc91e 100644
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -98,6 +98,9 @@ module_param(bm_history, uint, 0644);
 
 static int acpi_processor_set_power_policy(struct acpi_processor *pr);
 
+#else	/* CONFIG_CPU_IDLE */
+static unsigned int latency_factor __read_mostly = 2;
+module_param(latency_factor, uint, 0644);
 #endif
 
 /*
@@ -201,6 +204,10 @@ static inline u32 ticks_elapsed_in_us(u32 t1, u32 t2)
 		return PM_TIMER_TICKS_TO_US((0xFFFFFFFF - t1) + t2);
 }
 
+/*
+ * Callers should disable interrupts before the call and enable
+ * interrupts after return.
+ */
 static void acpi_safe_halt(void)
 {
 	current_thread_info()->status &= ~TS_POLLING;
@@ -261,7 +268,7 @@ static atomic_t c3_cpu_count;
 /* Common C-state entry for C2, C3, .. */
 static void acpi_cstate_enter(struct acpi_processor_cx *cstate)
 {
-	if (cstate->space_id == ACPI_CSTATE_FFH) {
+	if (cstate->entry_method == ACPI_CSTATE_FFH) {
 		/* Call into architectural FFH based C-state */
 		acpi_processor_ffh_cstate_enter(cstate);
 	} else {
@@ -413,6 +420,8 @@ static void acpi_processor_idle(void)
 			pm_idle_save();
 		else
 			acpi_safe_halt();
+
+		local_irq_enable();
 		return;
 	}
 
@@ -521,6 +530,7 @@ static void acpi_processor_idle(void)
 		 *       skew otherwise.
 		 */
 		sleep_ticks = 0xFFFFFFFF;
+		local_irq_enable();
 		break;
 
 	case ACPI_STATE_C2:
@@ -922,20 +932,20 @@ static int acpi_processor_get_power_info_cst(struct acpi_processor *pr)
 		cx.address = reg->address;
 		cx.index = current_count + 1;
 
-		cx.space_id = ACPI_CSTATE_SYSTEMIO;
+		cx.entry_method = ACPI_CSTATE_SYSTEMIO;
 		if (reg->space_id == ACPI_ADR_SPACE_FIXED_HARDWARE) {
 			if (acpi_processor_ffh_cstate_probe
 					(pr->id, &cx, reg) == 0) {
-				cx.space_id = ACPI_CSTATE_FFH;
-			} else if (cx.type != ACPI_STATE_C1) {
+				cx.entry_method = ACPI_CSTATE_FFH;
+			} else if (cx.type == ACPI_STATE_C1) {
 				/*
 				 * C1 is a special case where FIXED_HARDWARE
 				 * can be handled in non-MWAIT way as well.
 				 * In that case, save this _CST entry info.
-				 * That is, we retain space_id of SYSTEM_IO for
-				 * halt based C1.
 				 * Otherwise, ignore this info and continue.
 				 */
+				cx.entry_method = ACPI_CSTATE_HALT;
+			} else {
 				continue;
 			}
 		}
@@ -1369,12 +1379,16 @@ static inline void acpi_idle_update_bm_rld(struct acpi_processor *pr,
 /**
  * acpi_idle_do_entry - a helper function that does C2 and C3 type entry
  * @cx: cstate data
+ *
+ * Caller disables interrupt before call and enables interrupt after return.
  */
 static inline void acpi_idle_do_entry(struct acpi_processor_cx *cx)
 {
-	if (cx->space_id == ACPI_CSTATE_FFH) {
+	if (cx->entry_method == ACPI_CSTATE_FFH) {
 		/* Call into architectural FFH based C-state */
 		acpi_processor_ffh_cstate_enter(cx);
+	} else if (cx->entry_method == ACPI_CSTATE_HALT) {
+		acpi_safe_halt();
 	} else {
 		int unused;
 		/* IO port based C-state */
@@ -1396,21 +1410,27 @@ static inline void acpi_idle_do_entry(struct acpi_processor_cx *cx)
 static int acpi_idle_enter_c1(struct cpuidle_device *dev,
 			      struct cpuidle_state *state)
 {
+	u32 t1, t2;
 	struct acpi_processor *pr;
 	struct acpi_processor_cx *cx = cpuidle_get_statedata(state);
+
 	pr = processors[smp_processor_id()];
 
 	if (unlikely(!pr))
 		return 0;
 
+	local_irq_disable();
 	if (pr->flags.bm_check)
 		acpi_idle_update_bm_rld(pr, cx);
 
-	acpi_safe_halt();
+	t1 = inl(acpi_gbl_FADT.xpm_timer_block.address);
+	acpi_idle_do_entry(cx);
+	t2 = inl(acpi_gbl_FADT.xpm_timer_block.address);
 
+	local_irq_enable();
 	cx->usage++;
 
-	return 0;
+	return ticks_elapsed_in_us(t1, t2);
 }
 
 /**
@@ -1517,7 +1537,9 @@ static int acpi_idle_enter_bm(struct cpuidle_device *dev,
 		if (dev->safe_state) {
 			return dev->safe_state->enter(dev, dev->safe_state);
 		} else {
+			local_irq_disable();
 			acpi_safe_halt();
+			local_irq_enable();
 			return 0;
 		}
 	}
@@ -1609,7 +1631,7 @@ struct cpuidle_driver acpi_idle_driver = {
  */
 static int acpi_processor_setup_cpuidle(struct acpi_processor *pr)
 {
-	int i, count = 0;
+	int i, count = CPUIDLE_DRIVER_STATE_START;
 	struct acpi_processor_cx *cx;
 	struct cpuidle_state *state;
 	struct cpuidle_device *dev = &pr->power.dev;
@@ -1638,13 +1660,14 @@ static int acpi_processor_setup_cpuidle(struct acpi_processor *pr)
 
 		snprintf(state->name, CPUIDLE_NAME_LEN, "C%d", i);
 		state->exit_latency = cx->latency;
-		state->target_residency = cx->latency * 6;
+		state->target_residency = cx->latency * latency_factor;
 		state->power_usage = cx->power;
 
 		state->flags = 0;
 		switch (cx->type) {
 			case ACPI_STATE_C1:
 			state->flags |= CPUIDLE_FLAG_SHALLOW;
+			state->flags |= CPUIDLE_FLAG_TIME_VALID;
 			state->enter = acpi_idle_enter_c1;
 			dev->safe_state = state;
 			break;
@@ -1667,6 +1690,8 @@ static int acpi_processor_setup_cpuidle(struct acpi_processor *pr)
 		}
 
 		count++;
+		if (count == CPUIDLE_STATE_MAX)
+			break;
 	}
 
 	dev->state_count = count;
diff --git a/drivers/acpi/processor_perflib.c b/drivers/acpi/processor_perflib.c
index 463b0247cbc..f32010bee4d 100644
--- a/drivers/acpi/processor_perflib.c
+++ b/drivers/acpi/processor_perflib.c
@@ -60,6 +60,11 @@ static DEFINE_MUTEX(performance_mutex);
  * policy is adjusted accordingly.
  */
 
+static unsigned int ignore_ppc = 0;
+module_param(ignore_ppc, uint, 0644);
+MODULE_PARM_DESC(ignore_ppc, "If the frequency of your machine gets wrongly" \
+		 "limited by BIOS, this should help");
+
 #define PPC_REGISTERED   1
 #define PPC_IN_USE       2
 
@@ -72,6 +77,9 @@ static int acpi_processor_ppc_notifier(struct notifier_block *nb,
 	struct acpi_processor *pr;
 	unsigned int ppc = 0;
 
+	if (ignore_ppc)
+		return 0;
+
 	mutex_lock(&performance_mutex);
 
 	if (event != CPUFREQ_INCOMPATIBLE)
@@ -130,7 +138,13 @@ static int acpi_processor_get_platform_limit(struct acpi_processor *pr)
 
 int acpi_processor_ppc_has_changed(struct acpi_processor *pr)
 {
-	int ret = acpi_processor_get_platform_limit(pr);
+	int ret;
+
+	if (ignore_ppc)
+		return 0;
+
+	ret = acpi_processor_get_platform_limit(pr);
+
 	if (ret < 0)
 		return (ret);
 	else
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index d9d531cce27..c7b0aa52dd2 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -941,6 +941,15 @@ static int acpi_bay_match(struct acpi_device *device){
 	return -ENODEV;
 }
 
+/*
+ * acpi_dock_match - see if a device has a _DCK method
+ */
+static int acpi_dock_match(struct acpi_device *device)
+{
+	acpi_handle tmp;
+	return acpi_get_handle(device->handle, "_DCK", &tmp);
+}
+
 static void acpi_device_set_id(struct acpi_device *device,
 			       struct acpi_device *parent, acpi_handle handle,
 			       int type)
@@ -950,6 +959,7 @@ static void acpi_device_set_id(struct acpi_device *device,
 	char *hid = NULL;
 	char *uid = NULL;
 	struct acpi_compatible_id_list *cid_list = NULL;
+	const char *cid_add = NULL;
 	acpi_status status;
 
 	switch (type) {
@@ -972,15 +982,18 @@ static void acpi_device_set_id(struct acpi_device *device,
 			device->flags.bus_address = 1;
 		}
 
-		if(!(info->valid & (ACPI_VALID_HID | ACPI_VALID_CID))){
-			status = acpi_video_bus_match(device);
-			if(ACPI_SUCCESS(status))
-				hid = ACPI_VIDEO_HID;
+		/* If we have a video/bay/dock device, add our selfdefined
+		   HID to the CID list. Like that the video/bay/dock drivers
+		   will get autoloaded and the device might still match
+		   against another driver.
+		*/
+		if (ACPI_SUCCESS(acpi_video_bus_match(device)))
+			cid_add = ACPI_VIDEO_HID;
+		else if (ACPI_SUCCESS(acpi_bay_match(device)))
+			cid_add = ACPI_BAY_HID;
+		else if (ACPI_SUCCESS(acpi_dock_match(device)))
+			cid_add = ACPI_DOCK_HID;
 
-			status = acpi_bay_match(device);
-			if (ACPI_SUCCESS(status))
-				hid = ACPI_BAY_HID;
-		}
 		break;
 	case ACPI_BUS_TYPE_POWER:
 		hid = ACPI_POWER_HID;
@@ -1021,11 +1034,44 @@ static void acpi_device_set_id(struct acpi_device *device,
 		strcpy(device->pnp.unique_id, uid);
 		device->flags.unique_id = 1;
 	}
-	if (cid_list) {
-		device->pnp.cid_list = kmalloc(cid_list->size, GFP_KERNEL);
-		if (device->pnp.cid_list)
-			memcpy(device->pnp.cid_list, cid_list, cid_list->size);
-		else
+	if (cid_list || cid_add) {
+		struct  acpi_compatible_id_list *list;
+		int size = 0;
+		int count = 0;
+
+		if (cid_list) {
+			size = cid_list->size;
+		} else if (cid_add) {
+			size = sizeof(struct acpi_compatible_id_list);
+			cid_list = ACPI_ALLOCATE_ZEROED((acpi_size) size);
+			if (!cid_list) {
+				printk(KERN_ERR "Memory allocation error\n");
+				kfree(buffer.pointer);
+				return;
+			} else {
+				cid_list->count = 0;
+				cid_list->size = size;
+			}
+		}
+		if (cid_add)
+			size += sizeof(struct acpi_compatible_id);
+		list = kmalloc(size, GFP_KERNEL);
+
+		if (list) {
+			if (cid_list) {
+				memcpy(list, cid_list, cid_list->size);
+				count = cid_list->count;
+			}
+			if (cid_add) {
+				strncpy(list->id[count].value, cid_add,
+					ACPI_MAX_CID_LENGTH);
+				count++;
+				device->flags.compatible_ids = 1;
+			}
+			list->size = size;
+			list->count = count;
+			device->pnp.cid_list = list;
+		} else
 			printk(KERN_ERR "Memory allocation error\n");
 	}
 
@@ -1081,6 +1127,20 @@ static int acpi_bus_remove(struct acpi_device *dev, int rmdevice)
 }
 
 static int
+acpi_is_child_device(struct acpi_device *device,
+			int (*matcher)(struct acpi_device *))
+{
+	int result = -ENODEV;
+
+	do {
+		if (ACPI_SUCCESS(matcher(device)))
+			return AE_OK;
+	} while ((device = device->parent));
+
+	return result;
+}
+
+static int
 acpi_add_single_object(struct acpi_device **child,
 		       struct acpi_device *parent, acpi_handle handle, int type,
 			struct acpi_bus_ops *ops)
@@ -1131,10 +1191,20 @@ acpi_add_single_object(struct acpi_device **child,
 	case ACPI_BUS_TYPE_PROCESSOR:
 	case ACPI_BUS_TYPE_DEVICE:
 		result = acpi_bus_get_status(device);
-		if (ACPI_FAILURE(result) || !device->status.present) {
-			result = -ENOENT;
+		if (ACPI_FAILURE(result)) {
+			result = -ENODEV;
 			goto end;
 		}
+		if (!device->status.present) {
+			/* Bay and dock should be handled even if absent */
+			if (!ACPI_SUCCESS(
+			     acpi_is_child_device(device, acpi_bay_match)) &&
+			    !ACPI_SUCCESS(
+			     acpi_is_child_device(device, acpi_dock_match))) {
+					result = -ENODEV;
+					goto end;
+			}
+		}
 		break;
 	default:
 		STRUCT_TO_INT(device->status) =
diff --git a/drivers/acpi/sleep/main.c b/drivers/acpi/sleep/main.c
index c9a733f36bd..293a1cbb47c 100644
--- a/drivers/acpi/sleep/main.c
+++ b/drivers/acpi/sleep/main.c
@@ -472,11 +472,20 @@ int acpi_pm_device_sleep_state(struct device *dev, int wake, int *d_min_p)
 	if (acpi_target_sleep_state == ACPI_STATE_S0 ||
 	    (wake && adev->wakeup.state.enabled &&
 	     adev->wakeup.sleep_state <= acpi_target_sleep_state)) {
+		acpi_status status;
+
 		acpi_method[3] = 'W';
-		acpi_evaluate_integer(handle, acpi_method, NULL, &d_max);
-		/* Sanity check */
-		if (d_max < d_min)
+		status = acpi_evaluate_integer(handle, acpi_method, NULL,
+						&d_max);
+		if (ACPI_FAILURE(status)) {
+			d_max = d_min;
+		} else if (d_max < d_min) {
+			/* Warn the user of the broken DSDT */
+			printk(KERN_WARNING "ACPI: Wrong value from %s\n",
+				acpi_method);
+			/* Sanitize it */
 			d_min = d_max;
+		}
 	}
 
 	if (d_min_p)
diff --git a/drivers/acpi/sleep/proc.c b/drivers/acpi/sleep/proc.c
index 1538355c266..f8df5217d47 100644
--- a/drivers/acpi/sleep/proc.c
+++ b/drivers/acpi/sleep/proc.c
@@ -178,6 +178,9 @@ static int get_date_field(char **p, u32 * value)
 	 * Try to find delimeter, only to insert null.  The end of the
 	 * string won't have one, but is still valid.
 	 */
+	if (*p == NULL)
+		return result;
+
 	next = strpbrk(*p, "- :");
 	if (next)
 		*next++ = '\0';
@@ -190,6 +193,8 @@ static int get_date_field(char **p, u32 * value)
 
 	if (next)
 		*p = next;
+	else
+		*p = NULL;
 
 	return result;
 }
@@ -251,27 +256,6 @@ acpi_system_write_alarm(struct file *file,
 	if ((result = get_date_field(&p, &sec)))
 		goto end;
 
-	if (sec > 59) {
-		min += 1;
-		sec -= 60;
-	}
-	if (min > 59) {
-		hr += 1;
-		min -= 60;
-	}
-	if (hr > 23) {
-		day += 1;
-		hr -= 24;
-	}
-	if (day > 31) {
-		mo += 1;
-		day -= 31;
-	}
-	if (mo > 12) {
-		yr += 1;
-		mo -= 12;
-	}
-
 	spin_lock_irq(&rtc_lock);
 
 	rtc_control = CMOS_READ(RTC_CONTROL);
@@ -288,24 +272,24 @@ acpi_system_write_alarm(struct file *file,
 	spin_unlock_irq(&rtc_lock);
 
 	if (sec > 59) {
-		min++;
-		sec -= 60;
+		min += sec/60;
+		sec = sec%60;
 	}
 	if (min > 59) {
-		hr++;
-		min -= 60;
+		hr += min/60;
+		min = min%60;
 	}
 	if (hr > 23) {
-		day++;
-		hr -= 24;
+		day += hr/24;
+		hr = hr%24;
 	}
 	if (day > 31) {
-		mo++;
-		day -= 31;
+		mo += day/32;
+		day = day%32;
 	}
 	if (mo > 12) {
-		yr++;
-		mo -= 12;
+		yr += mo/13;
+		mo = mo%13;
 	}
 
 	spin_lock_irq(&rtc_lock);
diff --git a/drivers/acpi/tables/Makefile b/drivers/acpi/tables/Makefile
index 0a7d7afac25..7385efa6162 100644
--- a/drivers/acpi/tables/Makefile
+++ b/drivers/acpi/tables/Makefile
@@ -2,6 +2,6 @@
 # Makefile for all Linux ACPI interpreter subdirectories
 #
 
-obj-y := tbxface.o tbinstal.o  tbutils.o tbfind.o tbfadt.o
+obj-y := tbxface.o tbinstal.o tbutils.o tbfind.o tbfadt.o tbxfroot.o
 
 EXTRA_CFLAGS += $(ACPI_CFLAGS)
diff --git a/drivers/acpi/tables/tbxfroot.c b/drivers/acpi/tables/tbxfroot.c
index cf8fa514189..9ecb4b6c1e7 100644
--- a/drivers/acpi/tables/tbxfroot.c
+++ b/drivers/acpi/tables/tbxfroot.c
@@ -100,7 +100,7 @@ static acpi_status acpi_tb_validate_rsdp(struct acpi_table_rsdp *rsdp)
 
 /*******************************************************************************
  *
- * FUNCTION:    acpi_tb_find_rsdp
+ * FUNCTION:    acpi_find_root_pointer
  *
  * PARAMETERS:  table_address           - Where the table pointer is returned
  *
@@ -219,8 +219,6 @@ acpi_status acpi_find_root_pointer(acpi_native_uint * table_address)
 	return_ACPI_STATUS(AE_NOT_FOUND);
 }
 
-ACPI_EXPORT_SYMBOL(acpi_find_root_pointer)
-
 /*******************************************************************************
  *
  * FUNCTION:    acpi_tb_scan_memory_for_rsdp
diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c
index 5f79b445121..3a0af9a8cd2 100644
--- a/drivers/acpi/thermal.c
+++ b/drivers/acpi/thermal.c
@@ -492,7 +492,7 @@ static int acpi_thermal_get_devices(struct acpi_thermal *tz)
 
 static int acpi_thermal_critical(struct acpi_thermal *tz)
 {
-	if (!tz || !tz->trips.critical.flags.valid || nocrt)
+	if (!tz || !tz->trips.critical.flags.valid)
 		return -EINVAL;
 
 	if (tz->temperature >= tz->trips.critical.temperature) {
@@ -501,9 +501,6 @@ static int acpi_thermal_critical(struct acpi_thermal *tz)
 	} else if (tz->trips.critical.flags.enabled)
 		tz->trips.critical.flags.enabled = 0;
 
-	printk(KERN_EMERG
-	       "Critical temperature reached (%ld C), shutting down.\n",
-	       KELVIN_TO_CELSIUS(tz->temperature));
 	acpi_bus_generate_proc_event(tz->device, ACPI_THERMAL_NOTIFY_CRITICAL,
 				tz->trips.critical.flags.enabled);
 	acpi_bus_generate_netlink_event(tz->device->pnp.device_class,
@@ -511,14 +508,20 @@ static int acpi_thermal_critical(struct acpi_thermal *tz)
 					  ACPI_THERMAL_NOTIFY_CRITICAL,
 					  tz->trips.critical.flags.enabled);
 
-	orderly_poweroff(true);
+	/* take no action if nocrt is set */
+	if(!nocrt) {
+		printk(KERN_EMERG
+			"Critical temperature reached (%ld C), shutting down.\n",
+			KELVIN_TO_CELSIUS(tz->temperature));
+		orderly_poweroff(true);
+	}
 
 	return 0;
 }
 
 static int acpi_thermal_hot(struct acpi_thermal *tz)
 {
-	if (!tz || !tz->trips.hot.flags.valid || nocrt)
+	if (!tz || !tz->trips.hot.flags.valid)
 		return -EINVAL;
 
 	if (tz->temperature >= tz->trips.hot.temperature) {
@@ -534,7 +537,7 @@ static int acpi_thermal_hot(struct acpi_thermal *tz)
 					  ACPI_THERMAL_NOTIFY_HOT,
 					  tz->trips.hot.flags.enabled);
 
-	/* TBD: Call user-mode "sleep(S4)" function */
+	/* TBD: Call user-mode "sleep(S4)" function if nocrt is cleared */
 
 	return 0;
 }
diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index bd77e81e81c..a54ff6bce8f 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -292,18 +292,26 @@ static int acpi_video_device_set_state(struct acpi_video_device *device, int sta
 static int acpi_video_get_brightness(struct backlight_device *bd)
 {
 	unsigned long cur_level;
+	int i;
 	struct acpi_video_device *vd =
 		(struct acpi_video_device *)bl_get_data(bd);
 	acpi_video_device_lcd_get_level_current(vd, &cur_level);
-	return (int) cur_level;
+	for (i = 2; i < vd->brightness->count; i++) {
+		if (vd->brightness->levels[i] == cur_level)
+			/* The first two entries are special - see page 575
+			   of the ACPI spec 3.0 */
+			return i-2;
+	}
+	return 0;
 }
 
 static int acpi_video_set_brightness(struct backlight_device *bd)
 {
-	int request_level = bd->props.brightness;
+	int request_level = bd->props.brightness+2;
 	struct acpi_video_device *vd =
 		(struct acpi_video_device *)bl_get_data(bd);
-	acpi_video_device_lcd_set_level(vd, request_level);
+	acpi_video_device_lcd_set_level(vd,
+					vd->brightness->levels[request_level]);
 	return 0;
 }
 
@@ -652,7 +660,6 @@ static void acpi_video_device_find_cap(struct acpi_video_device *device)
 	kfree(obj);
 
 	if (device->cap._BCL && device->cap._BCM && device->cap._BQC && max_level > 0){
-		unsigned long tmp;
 		static int count = 0;
 		char *name;
 		name = kzalloc(MAX_NAME_LEN, GFP_KERNEL);
@@ -660,11 +667,10 @@ static void acpi_video_device_find_cap(struct acpi_video_device *device)
 			return;
 
 		sprintf(name, "acpi_video%d", count++);
-		acpi_video_device_lcd_get_level_current(device, &tmp);
 		device->backlight = backlight_device_register(name,
 			NULL, device, &acpi_backlight_ops);
-		device->backlight->props.max_brightness = max_level;
-		device->backlight->props.brightness = (int)tmp;
+		device->backlight->props.max_brightness = device->brightness->count-3;
+		device->backlight->props.brightness = acpi_video_get_brightness(device->backlight);
 		backlight_update_status(device->backlight);
 
 		kfree(name);
@@ -1256,8 +1262,37 @@ acpi_video_bus_write_DOS(struct file *file,
 
 static int acpi_video_bus_add_fs(struct acpi_device *device)
 {
+	long device_id;
+	int status;
 	struct proc_dir_entry *entry = NULL;
 	struct acpi_video_bus *video;
+	struct device *dev;
+
+	status =
+	    acpi_evaluate_integer(device->handle, "_ADR", NULL, &device_id);
+
+	if (!ACPI_SUCCESS(status))
+		return -ENODEV;
+
+	/* We need to attempt to determine whether the _ADR refers to a
+	   PCI device or not. There's no terribly good way to do this,
+	   so the best we can hope for is to assume that there'll never
+	   be a video device in the host bridge */
+	if (device_id >= 0x10000) {
+		/* It looks like a PCI device. Does it exist? */
+		dev = acpi_get_physical_device(device->handle);
+	} else {
+		/* It doesn't look like a PCI device. Does its parent
+		   exist? */
+		acpi_handle phandle;
+		if (acpi_get_parent(device->handle, &phandle))
+			return -ENODEV;
+		dev = acpi_get_physical_device(phandle);
+	}
+	if (!dev)
+		return -ENODEV;
+	put_device(dev);
+
 
 
 	video = acpi_driver_data(device);