Commit 668ebab4 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

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
parents 9c09a95c 63eac9ba

drivers/acpi/blacklist.c

+381 −0
Original line number Diff line number Diff line
@@ -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 */

drivers/acpi/bus.c

+1 −1
Original line number Diff line number Diff line
@@ -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;

drivers/acpi/ec.c

+18 −8
Original line number Diff line number Diff line
@@ -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");

drivers/acpi/fan.c

+40 −0
Original line number Diff line number Diff line
@@ -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;

drivers/acpi/osl.c

+130 −43
Original line number Diff line number Diff line
@@ -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

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