mirror of
https://github.com/torvalds/linux.git
synced 2024-11-11 22:51:42 +00:00
ACPI: delete OSI(Linux) DMI dmesg spam
Linux will continue to ignore OSI(Linux), except for a white-list containing a few systems. So delete the black-list, and stop soliciting user-feedback on the console. Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
parent
95a28ed086
commit
a6e0887f21
@ -176,16 +176,6 @@ 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;
|
||||
}
|
||||
static int __init dmi_disable_osi_vista(const struct dmi_system_id *d)
|
||||
{
|
||||
printk(KERN_NOTICE PREFIX "DMI detected: %s\n", d->ident);
|
||||
@ -193,295 +183,21 @@ static int __init dmi_disable_osi_vista(const struct dmi_system_id *d)
|
||||
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 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"),
|
||||
*/
|
||||
/*
|
||||
* 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 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"),
|
||||
*
|
||||
* _OSI(Linux) is a NOP:
|
||||
* DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5315"),
|
||||
* DMI_MATCH(DMI_PRODUCT_NAME, "Extensa 5220"),
|
||||
*/
|
||||
{
|
||||
.callback = dmi_disable_osi_linux,
|
||||
.ident = "Acer",
|
||||
.matches = {
|
||||
DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
|
||||
},
|
||||
},
|
||||
/*
|
||||
* 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"),
|
||||
*/
|
||||
{
|
||||
.callback = dmi_disable_osi_linux,
|
||||
.ident = "Apple",
|
||||
.matches = {
|
||||
DMI_MATCH(DMI_SYS_VENDOR, "Apple"),
|
||||
},
|
||||
},
|
||||
/*
|
||||
* 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_disable_osi_linux,
|
||||
.ident = "Compal",
|
||||
.matches = {
|
||||
DMI_MATCH(DMI_BIOS_VENDOR, "COMPAL"),
|
||||
},
|
||||
},
|
||||
{ /* OSI(Linux) touches USB, unknown side-effect */
|
||||
.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 i1501",
|
||||
.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 Latitude D830",
|
||||
.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 OptiPlex GX620",
|
||||
.matches = {
|
||||
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
|
||||
DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex GX620"),
|
||||
},
|
||||
},
|
||||
{ /* OSI(Linux) causes some USB initialization to not run */
|
||||
.callback = dmi_unknown_osi_linux,
|
||||
.ident = "Dell OptiPlex 755",
|
||||
.matches = {
|
||||
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
|
||||
DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 755"),
|
||||
},
|
||||
},
|
||||
{ /* OSI(Linux) effect unknown */
|
||||
.callback = dmi_unknown_osi_linux,
|
||||
.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_unknown_osi_linux,
|
||||
.ident = "Dell PE 1950",
|
||||
.matches = {
|
||||
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
|
||||
DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge 1950"),
|
||||
},
|
||||
},
|
||||
{ /* 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 PR 390",
|
||||
.matches = {
|
||||
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
|
||||
DMI_MATCH(DMI_PRODUCT_NAME, "Precision WorkStation 390"),
|
||||
},
|
||||
},
|
||||
{ /* OSI(Linux) touches USB */
|
||||
.callback = dmi_unknown_osi_linux,
|
||||
.ident = "Dell PR 390",
|
||||
.matches = {
|
||||
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
|
||||
DMI_MATCH(DMI_PRODUCT_NAME, "Precision WorkStation 690"),
|
||||
},
|
||||
},
|
||||
{ /* OSI(Linux) unknown - ASL looks benign, but may effect dock/SMM */
|
||||
.callback = dmi_unknown_osi_linux,
|
||||
.ident = "Dell PR M4300",
|
||||
.matches = {
|
||||
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
|
||||
DMI_MATCH(DMI_PRODUCT_NAME, "Precision M4300"),
|
||||
},
|
||||
},
|
||||
{ /* 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 PE SC440",
|
||||
.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"),
|
||||
* DMI_MATCH(DMI_PRODUCT_NAME, "ESPRIMO Mobile V5505"),
|
||||
* _OSI(Linux) unknown effect:
|
||||
* DMI_MATCH(DMI_PRODUCT_NAME, "Amilo M1425"),
|
||||
* DMI_MATCH(DMI_PRODUCT_NAME, "Amilo Si 1520"),
|
||||
*/
|
||||
{
|
||||
.callback = dmi_disable_osi_linux,
|
||||
.ident = "Fujitsu Siemens",
|
||||
.matches = {
|
||||
DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
|
||||
},
|
||||
},
|
||||
{
|
||||
.callback = dmi_disable_osi_vista,
|
||||
.ident = "Fujitsu Siemens",
|
||||
.matches = {
|
||||
DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
|
||||
DMI_MATCH(DMI_PRODUCT_NAME, "ESPRIMO Mobile V5505"),
|
||||
DMI_MATCH(DMI_PRODUCT_NAME, "ESPRIMO Mobile V5505"),
|
||||
},
|
||||
},
|
||||
|
||||
/*
|
||||
* 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"),
|
||||
* BIOS invocation of _OSI(Linux) is almost always a BIOS bug.
|
||||
* Linux ignores it, except for the machines enumerated below.
|
||||
*/
|
||||
{
|
||||
.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.
|
||||
@ -519,113 +235,6 @@ static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
|
||||
DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X61"),
|
||||
},
|
||||
},
|
||||
{
|
||||
.callback = dmi_disable_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"),
|
||||
* 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,
|
||||
.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"),
|
||||
},
|
||||
},
|
||||
/* Panasonic */
|
||||
{
|
||||
.callback = dmi_unknown_osi_linux,
|
||||
.ident = "Panasonic",
|
||||
.matches = {
|
||||
DMI_MATCH(DMI_SYS_VENDOR, "Matsushita"),
|
||||
/* Toughbook CF-52 */
|
||||
DMI_MATCH(DMI_PRODUCT_NAME, "CF-52CCABVBG"),
|
||||
},
|
||||
},
|
||||
/*
|
||||
* 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-NR11S_S"),
|
||||
* DMI_MATCH(DMI_PRODUCT_NAME, "VGN-SZ38GP_C"),
|
||||
* DMI_MATCH(DMI_PRODUCT_NAME, "VGN-SZ650N"),
|
||||
* DMI_MATCH(DMI_PRODUCT_NAME, "VGN-TZ21MN_N"),
|
||||
* _OSI(Linux) unknown effect:
|
||||
* DMI_MATCH(DMI_PRODUCT_NAME, "VGN-FZ11M"),
|
||||
*/
|
||||
{
|
||||
.callback = dmi_disable_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"),
|
||||
},
|
||||
},
|
||||
{}
|
||||
};
|
||||
|
||||
|
@ -35,7 +35,6 @@
|
||||
#include <linux/interrupt.h>
|
||||
#include <linux/kmod.h>
|
||||
#include <linux/delay.h>
|
||||
#include <linux/dmi.h>
|
||||
#include <linux/workqueue.h>
|
||||
#include <linux/nmi.h>
|
||||
#include <linux/acpi.h>
|
||||
@ -97,54 +96,44 @@ static DEFINE_SPINLOCK(acpi_res_lock);
|
||||
static char osi_additional_string[OSI_STRING_LENGTH_MAX];
|
||||
|
||||
/*
|
||||
* "Ode to _OSI(Linux)"
|
||||
* The story of _OSI(Linux)
|
||||
*
|
||||
* osi_linux -- Control response to BIOS _OSI(Linux) query.
|
||||
* From pre-history through Linux-2.6.22,
|
||||
* Linux responded TRUE upon a 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, reference BIOS writers got wind of this
|
||||
* and put OSI(Linux) in their example code, quickly exposing
|
||||
* this string as ill-conceived and opening the door to
|
||||
* an un-bounded number of BIOS incompatibilities.
|
||||
*
|
||||
* 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.
|
||||
* For example, OSI(Linux) was used on resume to re-POST a
|
||||
* video card on one system, because Linux at that time
|
||||
* could not do a speedy restore in its native driver.
|
||||
* But then upon gaining quick native restore capability,
|
||||
* Linux has no way to tell the BIOS to skip the time-consuming
|
||||
* POST -- putting Linux at a permanent performance disadvantage.
|
||||
* On another system, the BIOS writer used OSI(Linux)
|
||||
* to infer native OS support for IPMI! On other systems,
|
||||
* OSI(Linux) simply got in the way of Linux claiming to
|
||||
* be compatible with other operating systems, exposing
|
||||
* BIOS issues such as skipped device initialization.
|
||||
*
|
||||
* 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.
|
||||
* So "Linux" turned out to be a really poor chose of
|
||||
* OSI string, and from Linux-2.6.23 onward we respond FALSE.
|
||||
*
|
||||
* 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.
|
||||
* Linux will complain on the console when it sees it, and return FALSE.
|
||||
* To get Linux to return TRUE for your system will require
|
||||
* a kernel source update to add a DMI entry,
|
||||
* or boot with "acpi_osi=Linux"
|
||||
*/
|
||||
#define OSI_LINUX_ENABLE 0
|
||||
|
||||
static 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};
|
||||
} osi_linux = { 0, 0, 0, 0};
|
||||
|
||||
static void __init acpi_request_region (struct acpi_generic_address *addr,
|
||||
unsigned int length, char *desc)
|
||||
@ -1296,34 +1285,6 @@ 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
|
||||
*/
|
||||
static int acpi_dmi_dump(void)
|
||||
{
|
||||
|
||||
if (!dmi_available)
|
||||
return -1;
|
||||
|
||||
printk(KERN_NOTICE PREFIX "DMI System Vendor: %s\n",
|
||||
dmi_get_system_info(DMI_SYS_VENDOR));
|
||||
printk(KERN_NOTICE PREFIX "DMI Product Name: %s\n",
|
||||
dmi_get_system_info(DMI_PRODUCT_NAME));
|
||||
printk(KERN_NOTICE PREFIX "DMI Product Version: %s\n",
|
||||
dmi_get_system_info(DMI_PRODUCT_VERSION));
|
||||
printk(KERN_NOTICE PREFIX "DMI Board Name: %s\n",
|
||||
dmi_get_system_info(DMI_BOARD_NAME));
|
||||
printk(KERN_NOTICE PREFIX "DMI BIOS Vendor: %s\n",
|
||||
dmi_get_system_info(DMI_BIOS_VENDOR));
|
||||
printk(KERN_NOTICE PREFIX "DMI BIOS Date: %s\n",
|
||||
dmi_get_system_info(DMI_BIOS_DATE));
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
/******************************************************************************
|
||||
*
|
||||
* FUNCTION: acpi_os_validate_interface
|
||||
@ -1350,21 +1311,6 @@ acpi_os_validate_interface (char *interface)
|
||||
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;
|
||||
}
|
||||
|
Loading…
Reference in New Issue
Block a user