ACPI: memory hotplug: remove .start() method

This patch folds the .start() method into .add().

The .start() method is called in two paths: boot-time device enumeration
and run-time node addition, currently via container_device_add().  In both
cases, .start() is called immediately after .add(), so there's no reason
to make them separate methods.
Signed-off-by: NBjorn Helgaas <bjorn.helgaas@hp.com>
Reviewed-by: NAlex Chiang <achiang@hp.com>
CC: Yasunori Goto <y-goto@jp.fujitsu.com>
CC: Dave Hansen <haveblue@us.ibm.com>
Signed-off-by: NLen Brown <len.brown@intel.com>

drivers/acpi/acpi_memhotplug.c

@@ -50,7 +50,6 @@ MODULE_LICENSE("GPL");
 
 static int acpi_memory_device_add(struct acpi_device *device);
 static int acpi_memory_device_remove(struct acpi_device *device, int type);
-static int acpi_memory_device_start(struct acpi_device *device);
 
 static const struct acpi_device_id memory_device_ids[] = {
 	{ACPI_MEMORY_DEVICE_HID, 0},
@@ -65,7 +64,6 @@ static struct acpi_driver acpi_memory_device_driver = {
 	.ops = {
 		.add = acpi_memory_device_add,
 		.remove = acpi_memory_device_remove,
-		.start = acpi_memory_device_start,
 		},
 };
 
@@ -415,28 +413,6 @@ static int acpi_memory_device_add(struct acpi_device *device)
 
 	printk(KERN_DEBUG "%s \n", acpi_device_name(device));
 
-	return result;
-}
-
-static int acpi_memory_device_remove(struct acpi_device *device, int type)
-{
-	struct acpi_memory_device *mem_device = NULL;
-
-
-	if (!device || !acpi_driver_data(device))
-		return -EINVAL;
-
-	mem_device = acpi_driver_data(device);
-	kfree(mem_device);
-
-	return 0;
-}
-
-static int acpi_memory_device_start (struct acpi_device *device)
-{
-	struct acpi_memory_device *mem_device;
-	int result = 0;
-
 	/*
 	 * Early boot code has recognized memory area by EFI/E820.
 	 * If DSDT shows these memory devices on boot, hotplug is not necessary
@@ -446,8 +422,6 @@ static int acpi_memory_device_start (struct acpi_device *device)
 	if (!acpi_hotmem_initialized)
 		return 0;
 
-	mem_device = acpi_driver_data(device);
-
 	if (!acpi_memory_check_device(mem_device)) {
 		/* call add_memory func */
 		result = acpi_memory_enable_device(mem_device);
@@ -458,6 +432,20 @@ static int acpi_memory_device_start (struct acpi_device *device)
 	return result;
 }
 
+static int acpi_memory_device_remove(struct acpi_device *device, int type)
+{
+	struct acpi_memory_device *mem_device = NULL;
+
+
+	if (!device || !acpi_driver_data(device))
+		return -EINVAL;
+
+	mem_device = acpi_driver_data(device);
+	kfree(mem_device);
+
+	return 0;
+}
+
 /*
  * Helper function to check for memory device
  */