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@xxxxxxxxx>
Signed-off-by: Alex Chiang <achiang@xxxxxx>
---
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 2944e7d..54f0214 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 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;
}
--
To unsubscribe from this list: send the line "unsubscribe linux-acpi" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
