@@ -144,6 +144,29 @@ void acpi_processor_set_pdc(acpi_handle handle)
}
EXPORT_SYMBOL_GPL(acpi_processor_set_pdc);
+static int early_pdc_optin;
+static int set_early_pdc_optin(const struct dmi_system_id *id)
+{
+ early_pdc_optin = 1;
+ return 0;
+}
+
+static struct dmi_system_id __cpuinitdata early_pdc_optin_table[] = {
+ {
+ set_early_pdc_optin, "HP Envy", {
+ DMI_MATCH(DMI_BIOS_VENDOR, "Hewlett-Packard"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "HP Envy") }, NULL},
+ {
+ set_early_pdc_optin, "HP Pavilion dv6", {
+ DMI_MATCH(DMI_BIOS_VENDOR, "Hewlett-Packard"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion dv6") }, NULL},
+ {
+ set_early_pdc_optin, "HP Pavilion dv7", {
+ DMI_MATCH(DMI_BIOS_VENDOR, "Hewlett-Packard"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion dv7") }, NULL},
+ {},
+};
+
static acpi_status
early_init_pdc(acpi_handle handle, u32 lvl, void *context, void **rv)
{
@@ -159,6 +182,13 @@ void acpi_early_processor_set_pdc(void)
*/
dmi_check_system(processor_idle_dmi_table);
+ /*
+ * Allow systems to opt-in to early _PDC evaluation.
+ */
+ dmi_check_system(early_pdc_optin_table);
+ if (!early_pdc_optin)
+ return;
+
acpi_walk_namespace(ACPI_TYPE_PROCESSOR, ACPI_ROOT_OBJECT,
ACPI_UINT32_MAX,
early_init_pdc, NULL, NULL, NULL);