Merge branches 'bugzilla-14886', 'bugzilla-15000', 'bugzilla-15040', 'bugzilla-15108', 'pdc', 'hotplug-null-ref' and 'thinkpad' into release

drivers/acpi/dock.c

@@ -935,6 +935,7 @@ static int dock_add(acpi_handle handle)
 	struct platform_device *dd;
 
 	id = dock_station_count;
+	memset(&ds, 0, sizeof(ds));
 	dd = platform_device_register_data(NULL, "dock", id, &ds, sizeof(ds));
 	if (IS_ERR(dd))
 		return PTR_ERR(dd);

drivers/acpi/processor_idle.c

@@ -110,6 +110,14 @@ static struct dmi_system_id __cpuinitdata processor_power_dmi_table[] = {
 	  DMI_MATCH(DMI_BIOS_VENDOR,"Phoenix Technologies LTD"),
 	  DMI_MATCH(DMI_BIOS_VERSION,"SHE845M0.86C.0013.D.0302131307")},
 	 (void *)2},
+	{ set_max_cstate, "Pavilion zv5000", {
+	  DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
+	  DMI_MATCH(DMI_PRODUCT_NAME,"Pavilion zv5000 (DS502A#ABA)")},
+	 (void *)1},
+	{ set_max_cstate, "Asus L8400B", {
+	  DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
+	  DMI_MATCH(DMI_PRODUCT_NAME,"L8400B series Notebook PC")},
+	 (void *)1},
 	{},
 };
 

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;
@@ -151,6 +156,13 @@ static int set_early_pdc_optin(const struct dmi_system_id *id)
 	return 0;
 }
 
+static int param_early_pdc_optin(char *s)
+{
+	early_pdc_optin = 1;
+	return 1;
+}
+__setup("acpi_early_pdc_eval", param_early_pdc_optin);
+
 static struct dmi_system_id __cpuinitdata early_pdc_optin_table[] = {
 	{
 	set_early_pdc_optin, "HP Envy", {
@@ -192,4 +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;
 }

drivers/acpi/scan.c

@@ -1336,9 +1336,25 @@ static int acpi_bus_scan(acpi_handle handle, struct acpi_bus_ops *ops,
 
 	if (child)
 		*child = device;
-	return 0;
+
+	if (device)
+		return 0;
+	else
+		return -ENODEV;
 }
 
+/*
+ * acpi_bus_add and acpi_bus_start
+ *
+ * scan a given ACPI tree and (probably recently hot-plugged)
+ * create and add or starts found devices.
+ *
+ * If no devices were found -ENODEV is returned which does not
+ * mean that this is a real error, there just have been no suitable
+ * ACPI objects in the table trunk from which the kernel could create
+ * a device and add/start an appropriate driver.
+ */
+
 int
 acpi_bus_add(struct acpi_device **child,
 	     struct acpi_device *parent, acpi_handle handle, int type)
@@ -1348,8 +1364,7 @@ acpi_bus_add(struct acpi_device **child,
 	memset(&ops, 0, sizeof(ops));
 	ops.acpi_op_add = 1;
 
-	acpi_bus_scan(handle, &ops, child);
-	return 0;
+	return acpi_bus_scan(handle, &ops, child);
 }
 EXPORT_SYMBOL(acpi_bus_add);
 
@@ -1357,11 +1372,13 @@ int acpi_bus_start(struct acpi_device *device)
 {
 	struct acpi_bus_ops ops;
 
+	if (!device)
+		return -EINVAL;
+
 	memset(&ops, 0, sizeof(ops));
 	ops.acpi_op_start = 1;
 
-	acpi_bus_scan(device->handle, &ops, NULL);
-	return 0;
+	return acpi_bus_scan(device->handle, &ops, NULL);
 }
 EXPORT_SYMBOL(acpi_bus_start);
 

drivers/acpi/tables.c

@@ -213,7 +213,7 @@ acpi_table_parse_entries(char *id,
 	unsigned long table_end;
 	acpi_size tbl_size;
 
-	if (acpi_disabled)
+	if (acpi_disabled && !acpi_ht)
 		return -ENODEV;
 
 	if (!handler)
@@ -280,7 +280,7 @@ int __init acpi_table_parse(char *id, acpi_table_handler handler)
 	struct acpi_table_header *table = NULL;
 	acpi_size tbl_size;
 
-	if (acpi_disabled)
+	if (acpi_disabled && !acpi_ht)
 		return -ENODEV;
 
 	if (!handler)