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| author | Len Brown <len.brown@intel.com> | 2009-02-06 20:00:56 +0100 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2009-02-06 20:00:56 +0100 |
| commit | 9e3a9d1ed8cc8db93e5c53e9a5b09065bd95de8b (patch) | |
| tree | f181c88fd7bae4c3088833e2587d8e60047e0774 /drivers/acpi/tables.c | |
| parent | ACPI: proc_dir_entry 'video/VGA' already registered (diff) | |
| download | linux-9e3a9d1ed8cc8db93e5c53e9a5b09065bd95de8b.tar.xz linux-9e3a9d1ed8cc8db93e5c53e9a5b09065bd95de8b.zip | |
ACPI: disable ACPI cleanly when bad RSDP found
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>
Diffstat (limited to 'drivers/acpi/tables.c')
| -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 775c97a282bd..a8852952fac4 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; } |