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authorLen Brown <len.brown@intel.com>2009-02-06 14:00:56 -0500
committerLen Brown <len.brown@intel.com>2009-02-06 14:00:56 -0500
commit9e3a9d1ed8cc8db93e5c53e9a5b09065bd95de8b (patch)
treef181c88fd7bae4c3088833e2587d8e60047e0774
parentf3b39f1393d5cebe56f43a584ef47efbebd2702c (diff)
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>
-rw-r--r--drivers/acpi/tables.c7
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;
}

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