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| author | Len Brown <len.brown@intel.com> | 2008-01-23 20:50:56 -0500 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2008-01-23 21:26:15 -0500 |
| commit | d4b7dc499daae909e62dc260b95cd618f2970ded (patch) | |
| tree | d24816be9d0830724e35f322c515dc8db38d4a2e /drivers/acpi/blacklist.c | |
| parent | 7ce95ce5c6dbbc3f70933f04537860ffd9dbe17e (diff) | |
| download | linux-d4b7dc499daae909e62dc260b95cd618f2970ded.tar.gz | |
ACPI: make _OSI(Linux) console messages smarter
If BIOS invokes _OSI(Linux), the kernel response depends on what the ACPI DMI list knows about the system, and that is reflectd in dmesg: 1) System unknown to DMI: ACPI: BIOS _OSI(Linux) query ignored ACPI: DMI System Vendor: LENOVO ACPI: DMI Product Name: 7661W1P ACPI: DMI Product Version: ThinkPad T61 ACPI: DMI Board Name: 7661W1P ACPI: DMI BIOS Vendor: LENOVO ACPI: DMI BIOS Date: 10/18/2007 ACPI: Please send DMI info above to linux-acpi@vger.kernel.org ACPI: If "acpi_osi=Linux" works better, please notify linux-acpi@vger.kernel.org 2) System known to DMI, but effect of OSI(Linux) unknown: ACPI: DMI detected: Lenovo ThinkPad T61 ... ACPI: BIOS _OSI(Linux) query ignored via DMI ACPI: If "acpi_osi=Linux" works better, please notify linux-acpi@vger.kernel.org 3) System known to DMI, which disables _OSI(Linux): ACPI: DMI detected: Lenovo ThinkPad T61 ... ACPI: BIOS _OSI(Linux) query ignored via DMI 4) System known to DMI, which enable _OSI(Linux): ACPI: DMI detected: Lenovo ThinkPad T61 ACPI: Added _OSI(Linux) ... ACPI: BIOS _OSI(Linux) query honored via DMI cmdline overrides take precidence over the built-in default and the DMI prescribed default. cmdline "acpi_osi=Linux" results in: ACPI: BIOS _OSI(Linux) query honored via cmdline Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi/blacklist.c')
| -rw-r--r-- | drivers/acpi/blacklist.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/acpi/blacklist.c b/drivers/acpi/blacklist.c index 3ec110ce00c8..018fc16c44ce 100644 --- a/drivers/acpi/blacklist.c +++ b/drivers/acpi/blacklist.c @@ -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 +168,13 @@ int __init acpi_blacklisted(void) blacklisted += blacklist_by_year(); + dmi_check_system(acpi_osi_dmi_table); + return blacklisted; } +#ifdef CONFIG_DMI +static struct dmi_system_id acpi_osi_dmi_table[] __initdata = { + {} +}; + +#endif /* CONFIG_DMI */ |