Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6

* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6:
  Revert "ACPI: Fan: Drop force_power_state acpi_device option"
  ACPI: EC: "DEBUG" needs to be defined earlier
  ACPI: EC: add leading zeros to debug messages
  ACPI: EC: fix dmesg spam regression
  ACPI: DMI blacklist to reduce console warnings on OSI(Linux) systems.
  ACPI: Add ThinkPad R61, ThinkPad T61 to OSI(Linux) white-list
  ACPI: make _OSI(Linux) console messages smarter
  ACPI: Delete Intel Customer Reference Board (CRB) from OSI(Linux) DMI list
  ACPI: on OSI(Linux), print needed DMI rather than requesting dmidecode output
  ACPI: create acpi_dmi_dump()
  DMI: create dmi_get_slot()
  DMI: move dmi_available declaration to linux/dmi.h
  ACPI: processor: Fix null pointer dereference in throttling

11 files changed, 591 insertions, 59 deletions

diff --git a/drivers/acpi/blacklist.c b/drivers/acpi/blacklist.c
index 3ec110ce00c..8809654d6cc 100644
--- a/drivers/acpi/blacklist.c
+++ b/drivers/acpi/blacklist.c
@@ -3,6 +3,7 @@
  *
  *  Check to see if the given machine has a known bad ACPI BIOS
  *  or if the BIOS is too old.
+ *  Check given machine against acpi_osi_dmi_table[].
  *
  *  Copyright (C) 2004 Len Brown <len.brown@intel.com>
  *  Copyright (C) 2002 Andy Grover <andrew.grover@intel.com>
@@ -50,6 +51,8 @@ struct acpi_blacklist_item {
 	u32 is_critical_error;
 };
 
+static struct dmi_system_id acpi_osi_dmi_table[] __initdata;
+
 /*
  * POLICY: If *anything* doesn't work, put it on the blacklist.
  *	   If they are critical errors, mark it critical, and abort driver load.
@@ -165,5 +168,383 @@ int __init acpi_blacklisted(void)
 
 	blacklisted += blacklist_by_year();
 
+	dmi_check_system(acpi_osi_dmi_table);
+
 	return blacklisted;
 }
+#ifdef CONFIG_DMI
+static int __init dmi_enable_osi_linux(const struct dmi_system_id *d)
+{
+	acpi_dmi_osi_linux(1, d);	/* enable */
+	return 0;
+}
+static int __init dmi_disable_osi_linux(const struct dmi_system_id *d)
+{
+	acpi_dmi_osi_linux(0, d);	/* disable */
+	return 0;
+}
+static int __init dmi_unknown_osi_linux(const struct dmi_system_id *d)
+{
+	acpi_dmi_osi_linux(-1, d);	/* unknown */
+	return 0;
+}
+
+/*
+ * Most BIOS that invoke OSI(Linux) do nothing with it.
+ * But some cause Linux to break.
+ * Only a couple use it to make Linux run better.
+ *
+ * Thus, Linux should continue to disable OSI(Linux) by default,
+ * should continue to discourage BIOS writers from using it, and
+ * should whitelist the few existing systems that require it.
+ *
+ * If it appears clear a vendor isn't using OSI(Linux)
+ * for anything constructive, blacklist them by name to disable
+ * unnecessary dmesg warnings on all of their products.
+ */
+
+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 5050"),
+	 * 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."),
+		},
+	},
+	/*
+	 * 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"),
+	 */
+	{
+	.callback = dmi_unknown_osi_linux,
+	.ident = "Acer",
+	.matches = {
+		     DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+		},
+	},
+	/*
+	 * Disable OSI(Linux) warnings on all "Apple Computer, 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"),
+	 * _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."),
+		},
+	},
+	/*
+	 * Disable OSI(Linux) warnings on all "BenQ"
+	 *
+	 * _OSI(Linux) confirmed to be a NOP:
+	 * DMI_MATCH(DMI_PRODUCT_NAME, "Joybook S31"),
+	 */
+	{
+	.callback = dmi_disable_osi_linux,
+	.ident = "BenQ",
+	.matches = {
+		     DMI_MATCH(DMI_SYS_VENDOR, "BenQ"),
+		},
+	},
+	/*
+	 * Disable OSI(Linux) warnings on all "Clevo Co."
+	 *
+	 * _OSI(Linux) confirmed to be a NOP:
+	 * DMI_MATCH(DMI_PRODUCT_NAME, "M570RU"),
+	 */
+	{
+	.callback = dmi_disable_osi_linux,
+	.ident = "Clevo",
+	.matches = {
+		     DMI_MATCH(DMI_SYS_VENDOR, "Clevo Co."),
+		},
+	},
+	/*
+	 * Disable OSI(Linux) warnings on all "COMPAL"
+	 *
+	 * _OSI(Linux) confirmed to be a NOP:
+	 * DMI_MATCH(DMI_BOARD_NAME, "HEL8X"),
+	 * _OSI(Linux) unknown effect:
+	 * DMI_MATCH(DMI_BOARD_NAME, "IFL91"),
+	 */
+	{
+	.callback = dmi_unknown_osi_linux,
+	.ident = "Compal",
+	.matches = {
+		     DMI_MATCH(DMI_BIOS_VENDOR, "COMPAL"),
+		},
+	},
+	{ /* OSI(Linux) touches USB, breaks suspend to disk */
+	.callback = dmi_disable_osi_linux,
+	.ident = "Dell Dimension 5150",
+	.matches = {
+		     DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+		     DMI_MATCH(DMI_PRODUCT_NAME, "Dell DM051"),
+		},
+	},
+	{ /* OSI(Linux) is a NOP */
+	.callback = dmi_disable_osi_linux,
+	.ident = "Dell",
+	.matches = {
+		     DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+		     DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1501"),
+		},
+	},
+	{ /* OSI(Linux) effect unknown */
+	.callback = dmi_unknown_osi_linux,
+	.ident = "Dell",
+	.matches = {
+		     DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+		     DMI_MATCH(DMI_PRODUCT_NAME, "Latitude D830"),
+		},
+	},
+	{ /* OSI(Linux) effect unknown */
+	.callback = dmi_unknown_osi_linux,
+	.ident = "Dell",
+	.matches = {
+		     DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+		     DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex GX620"),
+		},
+	},
+	{ /* OSI(Linux) effect unknown */
+	.callback = dmi_unknown_osi_linux,
+	.ident = "Dell",
+	.matches = {
+		     DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+		     DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge 1900"),
+		},
+	},
+	{ /* OSI(Linux) touches USB */
+	.callback = dmi_disable_osi_linux,
+	.ident = "Dell",
+	.matches = {
+		     DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+		     DMI_MATCH(DMI_PRODUCT_NAME, "Precision WorkStation 390"),
+		},
+	},
+	{ /* OSI(Linux) is a NOP */
+	.callback = dmi_disable_osi_linux,
+	.ident = "Dell Vostro 1000",
+	.matches = {
+		     DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+		     DMI_MATCH(DMI_PRODUCT_NAME, "Vostro   1000"),
+		},
+	},
+	{ /* OSI(Linux) effect unknown */
+	.callback = dmi_unknown_osi_linux,
+	.ident = "Dell",
+	.matches = {
+		     DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+		     DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge SC440"),
+		},
+	},
+	{ /* OSI(Linux) effect unknown */
+	.callback = dmi_unknown_osi_linux,
+	.ident = "Dialogue Flybook V5",
+	.matches = {
+		     DMI_MATCH(DMI_SYS_VENDOR, "Dialogue Technology Corporation"),
+		     DMI_MATCH(DMI_PRODUCT_NAME, "Flybook V5"),
+		},
+	},
+	/*
+	 * Disable OSI(Linux) warnings on all "FUJITSU SIEMENS"
+	 *
+	 * _OSI(Linux) disables latest Windows BIOS code:
+	 * DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Pa 2510"),
+	 * _OSI(Linux) confirmed to be a NOP:
+	 * DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Pi 1536"),
+	 * DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Pi 1556"),
+	 * DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Xi 1546"),
+	 * _OSI(Linux) unknown effect:
+	 * DMI_MATCH(DMI_PRODUCT_NAME, "Amilo M1425"),
+	 * DMI_MATCH(DMI_PRODUCT_NAME, "Amilo Si 1520"),
+	 * DMI_MATCH(DMI_PRODUCT_NAME, "ESPRIMO Mobile V5505"),
+	 */
+	{
+	.callback = dmi_disable_osi_linux,
+	.ident = "Fujitsu Siemens",
+	.matches = {
+		     DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
+		},
+	},
+	/*
+	 * Disable OSI(Linux) warnings on all "Hewlett-Packard"
+	 *
+	 * _OSI(Linux) confirmed to be a NOP:
+	 * .ident = "HP Pavilion tx 1000"
+	 * DMI_MATCH(DMI_BOARD_NAME, "30BF"),
+	 * .ident = "HP Pavilion dv2000"
+	 * DMI_MATCH(DMI_BOARD_NAME, "30B5"),
+	 * .ident = "HP Pavilion dv5000",
+	 * DMI_MATCH(DMI_BOARD_NAME, "30A7"),
+	 * .ident = "HP Pavilion dv6300 30BC",
+	 * DMI_MATCH(DMI_BOARD_NAME, "30BC"),
+	 * .ident = "HP Pavilion dv6000",
+	 * DMI_MATCH(DMI_BOARD_NAME, "30B7"),
+	 * DMI_MATCH(DMI_BOARD_NAME, "30B8"),
+	 * .ident = "HP Pavilion dv9000",
+	 * DMI_MATCH(DMI_BOARD_NAME, "30B9"),
+	 * .ident = "HP Pavilion dv9500",
+	 * DMI_MATCH(DMI_BOARD_NAME, "30CB"),
+	 * .ident = "HP/Compaq Presario C500",
+	 * DMI_MATCH(DMI_BOARD_NAME, "30C6"),
+	 * .ident = "HP/Compaq Presario F500",
+	 * DMI_MATCH(DMI_BOARD_NAME, "30D3"),
+	 * _OSI(Linux) unknown effect:
+	 * .ident = "HP Pavilion dv6500",
+	 * DMI_MATCH(DMI_BOARD_NAME, "30D0"),
+	 */
+	{
+	.callback = dmi_disable_osi_linux,
+	.ident = "Hewlett-Packard",
+	.matches = {
+		     DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
+		},
+	},
+	/*
+	 * Lenovo has a mix of systems OSI(Linux) situations
+	 * and thus we can not wildcard the vendor.
+	 *
+	 * _OSI(Linux) helps sound
+	 * DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad R61"),
+	 * DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T61"),
+	 * _OSI(Linux) is a NOP:
+	 * DMI_MATCH(DMI_PRODUCT_VERSION, "3000 N100"),
+	 */
+	{
+	.callback = dmi_enable_osi_linux,
+	.ident = "Lenovo ThinkPad R61",
+	.matches = {
+		     DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+		     DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad R61"),
+		},
+	},
+	{
+	.callback = dmi_enable_osi_linux,
+	.ident = "Lenovo ThinkPad T61",
+	.matches = {
+		     DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+		     DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T61"),
+		},
+	},
+	{
+	.callback = dmi_unknown_osi_linux,
+	.ident = "Lenovo 3000 V100",
+	.matches = {
+		     DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+		     DMI_MATCH(DMI_PRODUCT_VERSION, "LENOVO3000 V100"),
+		},
+	},
+	{
+	.callback = dmi_disable_osi_linux,
+	.ident = "Lenovo 3000 N100",
+	.matches = {
+		     DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+		     DMI_MATCH(DMI_PRODUCT_VERSION, "3000 N100"),
+		},
+	},
+	/*
+	 * Disable OSI(Linux) warnings on all "LG Electronics"
+	 *
+	 * _OSI(Linux) confirmed to be a NOP:
+	 * DMI_MATCH(DMI_PRODUCT_NAME, "P1-J150B"),
+	 */
+	{
+	.callback = dmi_disable_osi_linux,
+	.ident = "LG",
+	.matches = {
+		     DMI_MATCH(DMI_SYS_VENDOR, "LG Electronics"),
+		},
+	},
+	/* NEC - OSI(Linux) effect unknown */
+	{
+	.callback = dmi_unknown_osi_linux,
+	.ident = "NEC VERSA M360",
+	.matches = {
+		     DMI_MATCH(DMI_SYS_VENDOR, "NEC Computers SAS"),
+		     DMI_MATCH(DMI_PRODUCT_NAME, "NEC VERSA M360"),
+		},
+	},
+	/*
+	 * Disable OSI(Linux) warnings on all "Samsung Electronics"
+	 *
+	 * OSI(Linux) disables PNP0C32 and other BIOS code for Windows:
+	 * DMI_MATCH(DMI_PRODUCT_NAME, "R40P/R41P"),
+	 * DMI_MATCH(DMI_PRODUCT_NAME, "R59P/R60P/R61P"),
+	 */
+	{
+	.callback = dmi_disable_osi_linux,
+	.ident = "Samsung",
+	.matches = {
+		     DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
+		},
+	},
+	/*
+	 * Disable OSI(Linux) warnings on all "Sony Corporation"
+	 *
+	 * _OSI(Linux) is a NOP:
+	 * DMI_MATCH(DMI_PRODUCT_NAME, "VGN-SZ650N"),
+	 * DMI_MATCH(DMI_PRODUCT_NAME, "VGN-SZ38GP_C"),
+	 * DMI_MATCH(DMI_PRODUCT_NAME, "VGN-TZ21MN_N"),
+	 * _OSI(Linux) unknown effect:
+	 * DMI_MATCH(DMI_PRODUCT_NAME, "VGN-FZ11M"),
+	 */
+	{
+	.callback = dmi_unknown_osi_linux,
+	.ident = "Sony",
+	.matches = {
+		     DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
+		},
+	},
+	/*
+	 * Disable OSI(Linux) warnings on all "TOSHIBA"
+	 *
+	 * _OSI(Linux) breaks sound (bugzilla 7787):
+	 * DMI_MATCH(DMI_PRODUCT_NAME, "Satellite P100"),
+	 * DMI_MATCH(DMI_PRODUCT_NAME, "Satellite P105"),
+	 * _OSI(Linux) is a NOP:
+	 * DMI_MATCH(DMI_PRODUCT_NAME, "Satellite A100"),
+	 * DMI_MATCH(DMI_PRODUCT_NAME, "Satellite A210"),
+	 * _OSI(Linux) unknown effect:
+	 * DMI_MATCH(DMI_PRODUCT_NAME, "Satellite A135"),
+	 * DMI_MATCH(DMI_PRODUCT_NAME, "Satellite A200"),
+	 * DMI_MATCH(DMI_PRODUCT_NAME, "Satellite P205"),
+	 * DMI_MATCH(DMI_PRODUCT_NAME, "Satellite U305"),
+	 */
+	{
+	.callback = dmi_disable_osi_linux,
+	.ident = "Toshiba",
+	.matches = {
+		     DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
+		},
+	},
+	{}
+};
+
+#endif /* CONFIG_DMI */
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index d7a115c362d..f4487c38d9f 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -200,7 +200,7 @@ int acpi_bus_set_power(acpi_handle handle, int state)
 	 * Get device's current power state
 	 */
 	acpi_bus_get_power(device->handle, &device->power.state);
-	if (state == device->power.state) {
+	if ((state == device->power.state) && !device->flags.force_power_state) {
 		ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device is already at D%d\n",
 				  state));
 		return 0;
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index 97dc16155a5..987b967c746 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -26,6 +26,9 @@
  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  */
 
+/* Uncomment next line to get verbose print outs*/
+/* #define DEBUG */
+
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/init.h>
@@ -47,9 +50,6 @@
 #undef PREFIX
 #define PREFIX				"ACPI: EC: "
 
-/* Uncomment next line to get verbose print outs*/
-/* #define DEBUG */
-
 /* EC status register */
 #define ACPI_EC_FLAG_OBF	0x01	/* Output buffer full */
 #define ACPI_EC_FLAG_IBF	0x02	/* Input buffer full */
@@ -82,6 +82,7 @@ enum {
 	EC_FLAGS_ADDRESS,		/* Address is being written */
 	EC_FLAGS_NO_WDATA_GPE,		/* Don't expect WDATA GPE event */
 	EC_FLAGS_WDATA,			/* Data is being written */
+	EC_FLAGS_NO_OBF1_GPE,		/* Don't expect GPE before read */
 };
 
 static int acpi_ec_remove(struct acpi_device *device, int type);
@@ -138,26 +139,26 @@ static struct acpi_ec {
 static inline u8 acpi_ec_read_status(struct acpi_ec *ec)
 {
 	u8 x = inb(ec->command_addr);
-	pr_debug(PREFIX "---> status = 0x%2x\n", x);
+	pr_debug(PREFIX "---> status = 0x%2.2x\n", x);
 	return x;
 }
 
 static inline u8 acpi_ec_read_data(struct acpi_ec *ec)
 {
 	u8 x = inb(ec->data_addr);
-	pr_debug(PREFIX "---> data = 0x%2x\n", x);
+	pr_debug(PREFIX "---> data = 0x%2.2x\n", x);
 	return inb(ec->data_addr);
 }
 
 static inline void acpi_ec_write_cmd(struct acpi_ec *ec, u8 command)
 {
-	pr_debug(PREFIX "<--- command = 0x%2x\n", command);
+	pr_debug(PREFIX "<--- command = 0x%2.2x\n", command);
 	outb(command, ec->command_addr);
 }
 
 static inline void acpi_ec_write_data(struct acpi_ec *ec, u8 data)
 {
-	pr_debug(PREFIX "<--- data = 0x%2x\n", data);
+	pr_debug(PREFIX "<--- data = 0x%2.2x\n", data);
 	outb(data, ec->data_addr);
 }
 
@@ -179,6 +180,10 @@ static inline int acpi_ec_check_status(struct acpi_ec *ec, enum ec_event event)
 static int acpi_ec_wait(struct acpi_ec *ec, enum ec_event event, int force_poll)
 {
 	int ret = 0;
+
+	if (unlikely(event == ACPI_EC_EVENT_OBF_1 &&
+		     test_bit(EC_FLAGS_NO_OBF1_GPE, &ec->flags)))
+		force_poll = 1;
 	if (unlikely(test_bit(EC_FLAGS_ADDRESS, &ec->flags) &&
 		     test_bit(EC_FLAGS_NO_ADDRESS_GPE, &ec->flags)))
 		force_poll = 1;
@@ -192,7 +197,12 @@ static int acpi_ec_wait(struct acpi_ec *ec, enum ec_event event, int force_poll)
 			goto end;
 		clear_bit(EC_FLAGS_WAIT_GPE, &ec->flags);
 		if (acpi_ec_check_status(ec, event)) {
-			if (test_bit(EC_FLAGS_ADDRESS, &ec->flags)) {
+			if (event == ACPI_EC_EVENT_OBF_1) {
+				/* miss OBF_1 GPE, don't expect it */
+				pr_info(PREFIX "missing OBF confirmation, "
+					"don't expect it any longer.\n");
+				set_bit(EC_FLAGS_NO_OBF1_GPE, &ec->flags);
+			} else if (test_bit(EC_FLAGS_ADDRESS, &ec->flags)) {
 				/* miss address GPE, don't expect it anymore */
 				pr_info(PREFIX "missing address confirmation, "
 					"don't expect it any longer.\n");
diff --git a/drivers/acpi/fan.c b/drivers/acpi/fan.c
index a5a5532db26..a6e149d692c 100644
--- a/drivers/acpi/fan.c
+++ b/drivers/acpi/fan.c
@@ -47,6 +47,8 @@ MODULE_LICENSE("GPL");
 
 static int acpi_fan_add(struct acpi_device *device);
 static int acpi_fan_remove(struct acpi_device *device, int type);
+static int acpi_fan_suspend(struct acpi_device *device, pm_message_t state);
+static int acpi_fan_resume(struct acpi_device *device);
 
 static const struct acpi_device_id fan_device_ids[] = {
 	{"PNP0C0B", 0},
@@ -61,6 +63,8 @@ static struct acpi_driver acpi_fan_driver = {
 	.ops = {
 		.add = acpi_fan_add,
 		.remove = acpi_fan_remove,
+		.suspend = acpi_fan_suspend,
+		.resume = acpi_fan_resume,
 		},
 };
 
@@ -191,6 +195,10 @@ static int acpi_fan_add(struct acpi_device *device)
 		goto end;
 	}
 
+	device->flags.force_power_state = 1;
+	acpi_bus_set_power(device->handle, state);
+	device->flags.force_power_state = 0;
+
 	result = acpi_fan_add_fs(device);
 	if (result)
 		goto end;
@@ -216,6 +224,38 @@ static int acpi_fan_remove(struct acpi_device *device, int type)
 	return 0;
 }
 
+static int acpi_fan_suspend(struct acpi_device *device, pm_message_t state)
+{
+	if (!device)
+		return -EINVAL;
+
+	acpi_bus_set_power(device->handle, ACPI_STATE_D0);
+
+	return AE_OK;
+}
+
+static int acpi_fan_resume(struct acpi_device *device)
+{
+	int result = 0;
+	int power_state = 0;
+
+	if (!device)
+		return -EINVAL;
+
+	result = acpi_bus_get_power(device->handle, &power_state);
+	if (result) {
+		ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+				  "Error reading fan power state\n"));
+		return result;
+	}
+
+	device->flags.force_power_state = 1;
+	acpi_bus_set_power(device->handle, power_state);
+	device->flags.force_power_state = 0;
+
+	return result;
+}
+
 static int __init acpi_fan_init(void)
 {
 	int result = 0;
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index e3a673a0084..e53fb516f9d 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -77,11 +77,55 @@ static struct workqueue_struct *kacpi_notify_wq;
 #define	OSI_STRING_LENGTH_MAX 64	/* arbitrary */
 static char osi_additional_string[OSI_STRING_LENGTH_MAX];
 
-static int osi_linux;		/* disable _OSI(Linux) by default */
+/*
+ * "Ode to _OSI(Linux)"
+ *
+ * osi_linux -- Control response to BIOS _OSI(Linux) query.
+ *
+ * As Linux evolves, the features that it supports change.
+ * So an OSI string such as "Linux" is not specific enough
+ * to be useful across multiple versions of Linux.  It
+ * doesn't identify any particular feature, interface,
+ * or even any particular version of Linux...
+ *
+ * Unfortunately, Linux-2.6.22 and earlier responded "yes"
+ * to a BIOS _OSI(Linux) query.  When
+ * a reference mobile BIOS started using it, its use
+ * started to spread to many vendor platforms.
+ * As it is not supportable, we need to halt that spread.
+ *
+ * Today, most BIOS references to _OSI(Linux) are noise --
+ * they have no functional effect and are just dead code
+ * carried over from the reference BIOS.
+ *
+ * The next most common case is that _OSI(Linux) harms Linux,
+ * usually by causing the BIOS to follow paths that are
+ * not tested during Windows validation.
+ *
+ * Finally, there is a short list of platforms
+ * where OSI(Linux) benefits Linux.
+ *
+ * In Linux-2.6.23, OSI(Linux) is first disabled by default.
+ * DMI is used to disable the dmesg warning about OSI(Linux)
+ * on platforms where it is known to have no effect.
+ * But a dmesg warning remains for systems where
+ * we do not know if OSI(Linux) is good or bad for the system.
+ * DMI is also used to enable OSI(Linux) for the machines
+ * that are known to need it.
+ *
+ * BIOS writers should NOT query _OSI(Linux) on future systems.
+ * It will be ignored by default, and to get Linux to
+ * not ignore it will require a kernel source update to
+ * add a DMI entry, or a boot-time "acpi_osi=Linux" invocation.
+ */
+#define OSI_LINUX_ENABLE 0
 
-#ifdef CONFIG_DMI
-static struct __initdata dmi_system_id acpi_osl_dmi_table[];
-#endif
+struct osi_linux {
+	unsigned int	enable:1;
+	unsigned int	dmi:1;
+	unsigned int	cmdline:1;
+	unsigned int	known:1;
+} osi_linux = { OSI_LINUX_ENABLE, 0, 0, 0};
 
 static void __init acpi_request_region (struct acpi_generic_address *addr,
 	unsigned int length, char *desc)
@@ -133,7 +177,6 @@ device_initcall(acpi_reserve_resources);
 
 acpi_status __init acpi_os_initialize(void)
 {
-	dmi_check_system(acpi_osl_dmi_table);
 	return AE_OK;
 }
 
@@ -964,13 +1007,37 @@ static int __init acpi_os_name_setup(char *str)
 
 __setup("acpi_os_name=", acpi_os_name_setup);
 
-static void enable_osi_linux(int enable) {
+static void __init set_osi_linux(unsigned int enable)
+{
+	if (osi_linux.enable != enable) {
+		osi_linux.enable = enable;
+		printk(KERN_NOTICE PREFIX "%sed _OSI(Linux)\n",
+			enable ? "Add": "Delet");
+	}
+	return;
+}
 
-	if (osi_linux != enable)
-		printk(KERN_INFO PREFIX "%sabled _OSI(Linux)\n",
-			enable ? "En": "Dis");
+static void __init acpi_cmdline_osi_linux(unsigned int enable)
+{
+	osi_linux.cmdline = 1;	/* cmdline set the default */
+	set_osi_linux(enable);
+
+	return;
+}
+
+void __init acpi_dmi_osi_linux(int enable, const struct dmi_system_id *d)
+{
+	osi_linux.dmi = 1;	/* DMI knows that this box asks OSI(Linux) */
+
+	printk(KERN_NOTICE PREFIX "DMI detected: %s\n", d->ident);
+
+	if (enable == -1)
+		return;
+
+	osi_linux.known = 1;	/* DMI knows which OSI(Linux) default needed */
+
+	set_osi_linux(enable);
 
-	osi_linux = enable;
 	return;
 }
 
@@ -987,12 +1054,12 @@ static int __init acpi_osi_setup(char *str)
 		printk(KERN_INFO PREFIX "_OSI method disabled\n");
 		acpi_gbl_create_osi_method = FALSE;
 	} else if (!strcmp("!Linux", str)) {
-		enable_osi_linux(0);
+		acpi_cmdline_osi_linux(0);	/* !enable */
 	} else if (*str == '!') {
 		if (acpi_osi_invalidate(++str) == AE_OK)
 			printk(KERN_INFO PREFIX "Deleted _OSI(%s)\n", str);
 	} else if (!strcmp("Linux", str)) {
-		enable_osi_linux(1);
+		acpi_cmdline_osi_linux(1);	/* enable */
 	} else if (*osi_additional_string == '\0') {
 		strncpy(osi_additional_string, str, OSI_STRING_LENGTH_MAX);
 		printk(KERN_INFO PREFIX "Added _OSI(%s)\n", str);
@@ -1141,6 +1208,34 @@ acpi_status acpi_os_release_object(acpi_cache_t * cache, void *object)
 	return (AE_OK);
 }
 
+/**
+ *	acpi_dmi_dump - dump DMI slots needed for blacklist entry
+ *
+ *	Returns 0 on success
+ */
+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));
+	printk(KERN_NOTICE PREFIX "DMI Product Name: %s\n",
+		dmi_get_slot(DMI_PRODUCT_NAME));
+	printk(KERN_NOTICE PREFIX "DMI Product Version: %s\n",
+		dmi_get_slot(DMI_PRODUCT_VERSION));
+	printk(KERN_NOTICE PREFIX "DMI Board Name: %s\n",
+		dmi_get_slot(DMI_BOARD_NAME));
+	printk(KERN_NOTICE PREFIX "DMI BIOS Vendor: %s\n",
+		dmi_get_slot(DMI_BIOS_VENDOR));
+	printk(KERN_NOTICE PREFIX "DMI BIOS Date: %s\n",
+		dmi_get_slot(DMI_BIOS_DATE));
+
+	return 0;
+}
+
+
 /******************************************************************************
  *
  * FUNCTION:    acpi_os_validate_interface
@@ -1160,13 +1255,29 @@ acpi_os_validate_interface (char *interface)
 	if (!strncmp(osi_additional_string, interface, OSI_STRING_LENGTH_MAX))
 		return AE_OK;
 	if (!strcmp("Linux", interface)) {
-		printk(KERN_WARNING PREFIX
-			"System BIOS is requesting _OSI(Linux)\n");
-		printk(KERN_WARNING PREFIX
-			"If \"acpi_osi=Linux\" works better,\n"
-			"Please send dmidecode "
-			"to linux-acpi@vger.kernel.org\n");
-		if(osi_linux)
+
+		printk(KERN_NOTICE PREFIX
+			"BIOS _OSI(Linux) query %s%s\n",
+			osi_linux.enable ? "honored" : "ignored",
+			osi_linux.cmdline ? " via cmdline" :
+			osi_linux.dmi ? " via DMI" : "");
+
+		if (!osi_linux.dmi) {
+			if (acpi_dmi_dump())
+				printk(KERN_NOTICE PREFIX
+					"[please extract dmidecode output]\n");
+			printk(KERN_NOTICE PREFIX
+				"Please send DMI info above to "
+				"linux-acpi@vger.kernel.org\n");
+		}
+		if (!osi_linux.known && !osi_linux.cmdline) {
+			printk(KERN_NOTICE PREFIX
+				"If \"acpi_osi=%sLinux\" works better, "
+				"please notify linux-acpi@vger.kernel.org\n",
+				osi_linux.enable ? "!" : "");
+		}
+
+		if (osi_linux.enable)
 			return AE_OK;
 	}
 	return AE_SUPPORT;
@@ -1198,28 +1309,4 @@ acpi_os_validate_address (
     return AE_OK;
 }
 
-#ifdef CONFIG_DMI
-static int dmi_osi_linux(const struct dmi_system_id *d)
-{
-	printk(KERN_NOTICE "%s detected: enabling _OSI(Linux)\n", d->ident);
-	enable_osi_linux(1);
-	return 0;
-}
-
-static struct dmi_system_id acpi_osl_dmi_table[] __initdata = {
-	/*
-	 * Boxes that need _OSI(Linux)
-	 */
-	{
-	 .callback = dmi_osi_linux,
-	 .ident = "Intel Napa CRB",
-	 .matches = {
-		     DMI_MATCH(DMI_BOARD_VENDOR, "Intel Corporation"),
-		     DMI_MATCH(DMI_BOARD_NAME, "MPAD-MSAE Customer Reference Boards"),
-		     },
-	 },
-	{}
-};
-#endif /* CONFIG_DMI */
-
 #endif
diff --git a/drivers/acpi/processor_throttling.c b/drivers/acpi/processor_throttling.c
index 6742d7bc477..1685b40abda 100644
--- a/drivers/acpi/processor_throttling.c
+++ b/drivers/acpi/processor_throttling.c
@@ -775,12 +775,12 @@ int acpi_processor_get_throttling_info(struct acpi_processor *pr)
 		acpi_processor_get_throttling_states(pr) ||
 		acpi_processor_get_platform_limit(pr))
 	{
-		if (acpi_processor_get_fadt_info(pr))
-			return 0;
 		pr->throttling.acpi_processor_get_throttling =
 		    &acpi_processor_get_throttling_fadt;
 		pr->throttling.acpi_processor_set_throttling =
 		    &acpi_processor_set_throttling_fadt;
+		if (acpi_processor_get_fadt_info(pr))
+			return 0;
 	} else {
 		pr->throttling.acpi_processor_get_throttling =
 		    &acpi_processor_get_throttling_ptc;
diff --git a/drivers/firmware/dmi-id.c b/drivers/firmware/dmi-id.c
index bc132d8f79c..313c99cbdc6 100644
--- a/drivers/firmware/dmi-id.c
+++ b/drivers/firmware/dmi-id.c
@@ -173,8 +173,6 @@ static struct device *dmi_dev;
 	if (dmi_get_system_info(_field)) \
 		sys_dmi_attributes[i++] = &sys_dmi_##_name##_attr.dev_attr.attr;
 
-extern int dmi_available;
-
 /* In a separate function to keep gcc 3.2 happy - do NOT merge this in
    dmi_id_init! */
 static void __init dmi_id_init_attr_table(void)
diff --git a/drivers/firmware/dmi_scan.c b/drivers/firmware/dmi_scan.c
index 0cdadea7a40..5e596a7e360 100644
--- a/drivers/firmware/dmi_scan.c
+++ b/drivers/firmware/dmi_scan.c
@@ -470,3 +470,11 @@ int dmi_get_year(int field)
 	return year;
 }
 
+/**
+ *	dmi_get_slot - return dmi_ident[slot]
+ *	@slot:	index into dmi_ident[]
+ */
+char *dmi_get_slot(int slot)
+{
+	return(dmi_ident[slot]);
+}
diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h
index 19c3ead2a90..7b74b60a68a 100644
--- a/include/acpi/acpi_bus.h
+++ b/include/acpi/acpi_bus.h
@@ -168,7 +168,8 @@ struct acpi_device_flags {
 	u32 power_manageable:1;
 	u32 performance_manageable:1;
 	u32 wake_capable:1;	/* Wakeup(_PRW) supported? */
-	u32 reserved:20;
+	u32 force_power_state:1;
+	u32 reserved:19;
 };
 
 /* File System */
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index e3c16c981e4..63f2e6ed698 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -40,6 +40,7 @@
 #include <acpi/acpi_drivers.h>
 #include <acpi/acpi_numa.h>
 #include <asm/acpi.h>
+#include <linux/dmi.h>
 
 
 #ifdef CONFIG_ACPI
@@ -192,7 +193,9 @@ extern int ec_transaction(u8 command,
 #endif /*CONFIG_ACPI_EC*/
 
 extern int acpi_blacklisted(void);
-extern void acpi_bios_year(char *s);
+#ifdef CONFIG_DMI
+extern void acpi_dmi_osi_linux(int enable, const struct dmi_system_id *d);
+#endif
 
 #ifdef CONFIG_ACPI_NUMA
 int acpi_get_pxm(acpi_handle handle);
@@ -226,5 +229,5 @@ static inline int acpi_boot_table_init(void)
 	return 0;
 }
 
-#endif	/* CONFIG_ACPI */
+#endif	/* !CONFIG_ACPI */
 #endif	/*_LINUX_ACPI_H*/
diff --git a/include/linux/dmi.h b/include/linux/dmi.h
index 00fc7a9c35e..5b42a659a30 100644
--- a/include/linux/dmi.h
+++ b/include/linux/dmi.h
@@ -78,6 +78,8 @@ extern const struct dmi_device * dmi_find_device(int type, const char *name,
 extern void dmi_scan_machine(void);
 extern int dmi_get_year(int field);
 extern int dmi_name_in_vendors(const char *str);
+extern int dmi_available;
+extern char *dmi_get_slot(int slot);
 
 #else
 
@@ -87,6 +89,8 @@ static inline const struct dmi_device * dmi_find_device(int type, const char *na
 	const struct dmi_device *from) { return NULL; }
 static inline int dmi_get_year(int year) { return 0; }
 static inline int dmi_name_in_vendors(const char *s) { return 0; }
+#define dmi_available 0
+static inline char *dmi_get_slot(int slot) { return NULL; }
 
 #endif