diff options
| author | Alex Chiang <achiang@hp.com> | 2010-01-20 08:06:35 +0100 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2010-01-22 18:39:56 +0100 |
| commit | a4932299d03a1c20e58e4cc40a66fb0a048fb3a7 (patch) | |
| tree | 56f20e664f9f5df6c602afc369ec7b3b3ece4193 /drivers/acpi | |
| parent | ACPI: processor: add kernel command line support for early _PDC eval (diff) | |
| download | linux-a4932299d03a1c20e58e4cc40a66fb0a048fb3a7.tar.xz linux-a4932299d03a1c20e58e4cc40a66fb0a048fb3a7.zip | |
ACPI: processor: only evaluate _PDC once per processor
If we evaluate _PDC in the early path, we do not want to evaluate
it again when the processor driver is loaded.
Cc: 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_pdc.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/acpi/processor_pdc.c b/drivers/acpi/processor_pdc.c index 3bbafe9576ae..e306ba9aa34e 100644 --- a/drivers/acpi/processor_pdc.c +++ b/drivers/acpi/processor_pdc.c @@ -125,6 +125,8 @@ acpi_processor_eval_pdc(acpi_handle handle, struct acpi_object_list *pdc_in) return status; } +static int early_pdc_done; + void acpi_processor_set_pdc(acpi_handle handle) { struct acpi_object_list *obj_list; @@ -132,6 +134,9 @@ void acpi_processor_set_pdc(acpi_handle handle) if (arch_has_acpi_pdc() == false) return; + if (early_pdc_done) + return; + obj_list = acpi_processor_alloc_pdc(); if (!obj_list) return; @@ -199,4 +204,6 @@ void __init acpi_early_processor_set_pdc(void) acpi_walk_namespace(ACPI_TYPE_PROCESSOR, ACPI_ROOT_OBJECT, ACPI_UINT32_MAX, early_init_pdc, NULL, NULL, NULL); + + early_pdc_done = 1; } |