diff options
| author | Len Brown <len.brown@intel.com> | 2009-02-06 14:00:56 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-02-12 09:50:33 -0800 |
| commit | 8c3c08456a945fd3951b51525f901c5be3aca14d (patch) | |
| tree | 7cc85f64de33e7ad940b2c160abbbe9150775474 | |
| parent | 83fee7c6055707f2f2f1a45b76a8f9ce53925090 (diff) | |
ACPI: disable ACPI cleanly when bad RSDP found
commit 9e3a9d1ed8cc8db93e5c53e9a5b09065bd95de8b upstream.
When ACPI is disabled in the BIOS of this VIA C3 box,
it invalidates the RSDP, which Linux notices:
ACPI Error (tbxfroot-0218): A valid RSDP was not found [20080926]
Bug Linux neglected to disable ACPI at that stage,
and later scribbled on smp_found_config:
ACPI: No APIC-table, disabling MPS
But this box doesn't run well in legacy PIC mode,
it needed IOAPIC mode to perform correctly:
http://lkml.org/lkml/2009/2/5/39
So exit ACPI mode cleanly when we first detect
that it is hopeless.
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | drivers/acpi/tables.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/acpi/tables.c b/drivers/acpi/tables.c index 775c97a282b..a8852952fac 100644 --- a/drivers/acpi/tables.c +++ b/drivers/acpi/tables.c @@ -293,7 +293,12 @@ static void __init check_multiple_madt(void) int __init acpi_table_init(void) { - acpi_initialize_tables(initial_tables, ACPI_MAX_TABLES, 0); + acpi_status status; + + status = acpi_initialize_tables(initial_tables, ACPI_MAX_TABLES, 0); + if (ACPI_FAILURE(status)) + return 1; + check_multiple_madt(); return 0; } |