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authorAlex Chiang <achiang@hp.com>2010-02-22 19:12:00 (GMT)
committerLen Brown <len.brown@intel.com>2010-03-15 01:17:26 (GMT)
commit149fe9c293f76803206648270ca24fc2604d5f01 (patch)
tree2649f879445879ab2bba0d85a0e94e8b5d1676df /drivers/acpi
parenteae701ceadf5aa3fc3b334029ef71f6885ef1cde (diff)
downloadlinux-149fe9c293f76803206648270ca24fc2604d5f01.tar.xz
ACPI: processor: push file static MADT pointer into internal map_madt_entry()
There's no real need for a pointer to the MADT to be global. The only function who uses it is map_madt_entry. This allows us to remove some more ugly #ifdefs. Acked-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Alex Chiang <achiang@hp.com> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi')
-rw-r--r--drivers/acpi/processor_core.c18
1 files changed, 9 insertions, 9 deletions
diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c
index ee9bce1..791ac7b 100644
--- a/drivers/acpi/processor_core.c
+++ b/drivers/acpi/processor_core.c
@@ -43,8 +43,6 @@ static struct dmi_system_id __cpuinitdata processor_idle_dmi_table[] = {
};
#ifdef CONFIG_SMP
-static struct acpi_table_madt *madt;
-
static int map_lapic_id(struct acpi_subtable_header *entry,
u32 acpi_id, int *apic_id)
{
@@ -100,8 +98,17 @@ static int map_lsapic_id(struct acpi_subtable_header *entry,
static int map_madt_entry(int type, u32 acpi_id)
{
unsigned long madt_end, entry;
+ static struct acpi_table_madt *madt;
+ static int read_madt;
int apic_id = -1;
+ if (!read_madt) {
+ if (ACPI_FAILURE(acpi_get_table(ACPI_SIG_MADT, 0,
+ (struct acpi_table_header **)&madt)))
+ madt = NULL;
+ read_madt++;
+ }
+
if (!madt)
return apic_id;
@@ -335,13 +342,6 @@ early_init_pdc(acpi_handle handle, u32 lvl, void *context, void **rv)
void __init acpi_early_processor_set_pdc(void)
{
-
-#ifdef CONFIG_SMP
- if (ACPI_FAILURE(acpi_get_table(ACPI_SIG_MADT, 0,
- (struct acpi_table_header **)&madt)))
- madt = NULL;
-#endif
-
/*
* Check whether the system is DMI table. If yes, OSPM
* should not use mwait for CPU-states.