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authorLen Brown <len.brown@intel.com>2009-02-03 18:04:39 -0500
committerLen Brown <len.brown@intel.com>2009-02-03 18:12:35 -0500
commit3e0676a9b699d12b2bd0a8807459ac4277b181fc (patch)
treee6e4778e2f9010ea576191a92ccbb8b2858d42a3 /drivers/acpi
parent18e352e4a73465349711a9324767e1b2453383e2 (diff)
ACPICA: add debug dump of BIOS _OSI strings
on boot, print out the OSI strings the BIOS uses to query the OS. To see this output... build with CONFIG_ACPI_DEBUG boot with "acpi.debug_level=4" (ACPI_LV_INFO) (enabled by default) and "acpi.debug_level=1" (ACPI_UTILITIES) (default is 0) example output: ACPI: BIOS _OSI(Windows 2001) supported ACPI: BIOS _OSI(Windows 2001 SP1) supported ACPI: BIOS _OSI(Windows 2001 SP2) supported ACPI: BIOS _OSI(Windows 2006) supported ACPI: BIOS _OSI(Linux) not-supported ACPI: BIOS _OSI(FreeBSD) not-supported Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi')
-rw-r--r--drivers/acpi/acpica/uteval.c21
1 files changed, 9 insertions, 12 deletions
diff --git a/drivers/acpi/acpica/uteval.c b/drivers/acpi/acpica/uteval.c
index da9450bc60f7..9c9897dbe907 100644
--- a/drivers/acpi/acpica/uteval.c
+++ b/drivers/acpi/acpica/uteval.c
@@ -116,9 +116,9 @@ acpi_status acpi_ut_osi_implementation(struct acpi_walk_state *walk_state)
return_ACPI_STATUS(AE_NO_MEMORY);
}
- /* Default return value is SUPPORTED */
+ /* Default return value is 0, NOT-SUPPORTED */
- return_desc->integer.value = ACPI_UINT32_MAX;
+ return_desc->integer.value = 0;
walk_state->return_desc = return_desc;
/* Compare input string to static table of supported interfaces */
@@ -127,10 +127,8 @@ acpi_status acpi_ut_osi_implementation(struct acpi_walk_state *walk_state)
if (!ACPI_STRCMP
(string_desc->string.pointer,
acpi_interfaces_supported[i])) {
-
- /* The interface is supported */
-
- return_ACPI_STATUS(AE_OK);
+ return_desc->integer.value = ACPI_UINT32_MAX;
+ goto done;
}
}
@@ -141,15 +139,14 @@ acpi_status acpi_ut_osi_implementation(struct acpi_walk_state *walk_state)
*/
status = acpi_os_validate_interface(string_desc->string.pointer);
if (ACPI_SUCCESS(status)) {
-
- /* The interface is supported */
-
- return_ACPI_STATUS(AE_OK);
+ return_desc->integer.value = ACPI_UINT32_MAX;
}
- /* The interface is not supported */
+done:
+ ACPI_DEBUG_PRINT_RAW((ACPI_DB_INFO, "ACPI: BIOS _OSI(%s) %ssupported\n",
+ string_desc->string.pointer,
+ return_desc->integer.value == 0 ? "not-" : ""));
- return_desc->integer.value = 0;
return_ACPI_STATUS(AE_OK);
}