diff options
| author | Len Brown <len.brown@intel.com> | 2007-05-29 18:43:33 -0400 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2007-05-29 18:43:33 -0400 |
| commit | ae00d812436dc968f4a5dea7757b6a94910b6dc4 (patch) | |
| tree | 6acd68850bead001cc74597369307a82bc711f6e /drivers/acpi/utilities/uteval.c | |
| parent | c420bc9f09a0926b708c3edb27eacba434a4f4ba (diff) | |
| download | lwn-ae00d812436dc968f4a5dea7757b6a94910b6dc4.tar.gz lwn-ae00d812436dc968f4a5dea7757b6a94910b6dc4.zip | |
ACPI: extend "acpi_osi=" boot option
The boot option "acpi_osi=" has always disabled Linux _OSI support,
thus disabling all OS Interface strings which are advertised
by Linux to the BIOS.
Now...
acpi_osi="string" adds the interface string, and
acpi_osi="!string" invalidates the pre-defined interface string
eg. acpi_osi="!Windows 2006"
would disable Linux's claim of Vista compatibility.
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi/utilities/uteval.c')
| -rw-r--r-- | drivers/acpi/utilities/uteval.c | 27 |
1 files changed, 26 insertions, 1 deletions
diff --git a/drivers/acpi/utilities/uteval.c b/drivers/acpi/utilities/uteval.c index 13d5879cd98b..a10120ad6982 100644 --- a/drivers/acpi/utilities/uteval.c +++ b/drivers/acpi/utilities/uteval.c @@ -59,7 +59,7 @@ acpi_ut_translate_one_cid(union acpi_operand_object *obj_desc, /* * Strings supported by the _OSI predefined (internal) method. */ -static const char *acpi_interfaces_supported[] = { +static char *acpi_interfaces_supported[] = { /* Operating System Vendor Strings */ "Linux", @@ -158,6 +158,31 @@ acpi_status acpi_ut_osi_implementation(struct acpi_walk_state *walk_state) /******************************************************************************* * + * FUNCTION: acpi_osi_invalidate + * + * PARAMETERS: interface_string + * + * RETURN: Status + * + * DESCRIPTION: invalidate string in pre-defiend _OSI string list + * + ******************************************************************************/ + +acpi_status acpi_osi_invalidate(char *interface) +{ + int i; + + for (i = 0; i < ACPI_ARRAY_LENGTH(acpi_interfaces_supported); i++) { + if (!ACPI_STRCMP(interface, acpi_interfaces_supported[i])) { + *acpi_interfaces_supported[i] = '\0'; + return AE_OK; + } + } + return AE_NOT_FOUND; +} + +/******************************************************************************* + * * FUNCTION: acpi_ut_evaluate_object * * PARAMETERS: prefix_node - Starting node |