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| author | Len Brown <len.brown@intel.com> | 2007-06-09 01:42:00 -0400 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2007-06-09 01:42:00 -0400 |
| commit | 072971d7d3e70ddac5c5be3436d929470cc2b3fb (patch) | |
| tree | 821abde2d5b7c1edbd43431634db9d5811c55941 /drivers/acpi | |
| parent | 85f6038f2170e3335dda09c3dfb0f83110e87019 (diff) | |
| download | kernel_samsung_smdk4412-072971d7d3e70ddac5c5be3436d929470cc2b3fb.zip kernel_samsung_smdk4412-072971d7d3e70ddac5c5be3436d929470cc2b3fb.tar.gz kernel_samsung_smdk4412-072971d7d3e70ddac5c5be3436d929470cc2b3fb.tar.bz2 | |
ACPI: disable _OSI(Linux) by default
In Linux-2.6.22 we expanded the boot parameter osi=
so that it can enable and !enable an OSI string.
_OSI(Linux) is a special case because we know that there
are both systems that require it set, and systems
require that it _not_ to be set. In the long term it can't
be set, for the same reason _OS(Linux) can't be enabled --
it tends to confuse BIOS that are not properly
validated with Linux. Further, the semantics and version
information of _OSI(Linux) were never actually defined.
The kernel prints out a message if it sees _OSI(Linux)
requested, and there is a DMI workaround to invoke
"osi=Linux" automatically for existing systems that need it.
http://bugzilla.kernel.org/show_bug.cgi?id=7787
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi')
| -rw-r--r-- | drivers/acpi/osl.c | 38 |
1 files changed, 1 insertions, 37 deletions
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c index 58ceb18..3f244eb 100644 --- a/drivers/acpi/osl.c +++ b/drivers/acpi/osl.c @@ -77,13 +77,7 @@ static struct workqueue_struct *kacpi_notify_wq; #define OSI_STRING_LENGTH_MAX 64 /* arbitrary */ static char osi_additional_string[OSI_STRING_LENGTH_MAX]; -#define OSI_LINUX_ENABLED -#ifdef OSI_LINUX_ENABLED -int osi_linux = 1; /* enable _OSI(Linux) by default */ -#else int osi_linux; /* disable _OSI(Linux) by default */ -#endif - #ifdef CONFIG_DMI static struct __initdata dmi_system_id acpi_osl_dmi_table[]; @@ -1183,17 +1177,10 @@ acpi_os_validate_interface (char *interface) if (!strcmp("Linux", interface)) { printk(KERN_WARNING PREFIX "System BIOS is requesting _OSI(Linux)\n"); -#ifdef OSI_LINUX_ENABLED - printk(KERN_WARNING PREFIX - "Please test with \"acpi_osi=!Linux\"\n" - "Please send dmidecode " - "to linux-acpi@vger.kernel.org\n"); -#else printk(KERN_WARNING PREFIX "If \"acpi_osi=Linux\" works better,\n" "Please send dmidecode " "to linux-acpi@vger.kernel.org\n"); -#endif if(osi_linux) return AE_OK; } @@ -1227,36 +1214,14 @@ acpi_os_validate_address ( } #ifdef CONFIG_DMI -#ifdef OSI_LINUX_ENABLED -static int dmi_osi_not_linux(struct dmi_system_id *d) -{ - printk(KERN_NOTICE "%s detected: requires not _OSI(Linux)\n", d->ident); - enable_osi_linux(0); - return 0; -} -#else static int dmi_osi_linux(struct dmi_system_id *d) { - printk(KERN_NOTICE "%s detected: requires _OSI(Linux)\n", d->ident); + printk(KERN_NOTICE "%s detected: enabling _OSI(Linux)\n", d->ident); enable_osi_linux(1); return 0; } -#endif static struct dmi_system_id acpi_osl_dmi_table[] __initdata = { -#ifdef OSI_LINUX_ENABLED - /* - * Boxes that need NOT _OSI(Linux) - */ - { - .callback = dmi_osi_not_linux, - .ident = "Toshiba Satellite P100", - .matches = { - DMI_MATCH(DMI_BOARD_VENDOR, "TOSHIBA"), - DMI_MATCH(DMI_BOARD_NAME, "Satellite P100"), - }, - }, -#else /* * Boxes that need _OSI(Linux) */ @@ -1268,7 +1233,6 @@ static struct dmi_system_id acpi_osl_dmi_table[] __initdata = { DMI_MATCH(DMI_BOARD_NAME, "MPAD-MSAE Customer Reference Boards"), }, }, -#endif {} }; #endif /* CONFIG_DMI */ |