This patch splits acpi_table_init() into two steps.
Since acpi_table_init() is used not just in x86, also used in ia64,
we introduce two new functions:
acpi_table_init_firmware() and acpi_table_init_override(),
which work just the same as acpi_table_init() if they are called
in sequence. This will keep acpi_table_init() works as before on
other platforms, and we only call these new functions in Linux.
Signed-off-by: Tang Chen <tangchen@xxxxxxxxxxxxxx>
Reviewed-by: Zhang Yanfei <zhangyanfei@xxxxxxxxxxxxxx>
---
drivers/acpi/tables.c | 26 ++++++++++++++++++++------
include/linux/acpi.h | 2 ++
2 files changed, 22 insertions(+), 6 deletions(-)
diff --git a/drivers/acpi/tables.c b/drivers/acpi/tables.c
index c8f2d01..4913a85 100644
--- a/drivers/acpi/tables.c
+++ b/drivers/acpi/tables.c
@@ -336,6 +336,23 @@ static void __init check_multiple_madt(void)
return;
}
+int __init acpi_table_init_firmware(void)
+{
+ acpi_status status;
+
+ status = acpi_initialize_tables_firmware(initial_tables,
+ ACPI_MAX_TABLES, 0);
+ if (ACPI_FAILURE(status))
+ return 1;
+
+ return 0;
+}
+
+void __init acpi_table_init_override(void)
+{
+ acpi_initialize_tables_override();
+}
+
/*
* acpi_table_init()
*
@@ -347,16 +364,13 @@ static void __init check_multiple_madt(void)
int __init acpi_table_init(void)
{
- acpi_status status;
-
- status = acpi_initialize_tables_firmware(initial_tables,
- ACPI_MAX_TABLES, 0);
- if (ACPI_FAILURE(status))
+ if (acpi_table_init_firmware())
return 1;
- acpi_initialize_tables_override();
+ acpi_table_init_override();
check_multiple_madt();
+
return 0;
}
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index 353ba25..9704179 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -95,6 +95,8 @@ void acpi_boot_table_init (void);
int acpi_mps_check (void);
int acpi_numa_init (void);
+int acpi_table_init_firmware(void);
+void acpi_table_init_override(void);
int acpi_table_init (void);
int acpi_table_parse(char *id, acpi_tbl_table_handler handler);
int __init acpi_table_parse_entries(char *id, unsigned long table_size,
--
1.7.1
--
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