diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index 4da66b4..9ed4ff3 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -546,12 +546,11 @@
 }
 
 /*
- * Free a device structure, all reports, and all fields.
+ * Close report. This function returns the device
+ * state to the point prior to hid_open_report().
  */
-
-static void hid_device_release(struct device *dev)
+static void hid_close_report(struct hid_device *device)
 {
-	struct hid_device *device = container_of(dev, struct hid_device, dev);
 	unsigned i, j;
 
 	for (i = 0; i < HID_REPORT_TYPES; i++) {
@@ -562,11 +561,34 @@
 			if (report)
 				hid_free_report(report);
 		}
+		memset(report_enum, 0, sizeof(*report_enum));
+		INIT_LIST_HEAD(&report_enum->report_list);
 	}
 
 	kfree(device->rdesc);
+	device->rdesc = NULL;
+	device->rsize = 0;
+
 	kfree(device->collection);
-	kfree(device);
+	device->collection = NULL;
+	device->collection_size = 0;
+	device->maxcollection = 0;
+	device->maxapplication = 0;
+
+	device->status &= ~HID_STAT_PARSED;
+}
+
+/*
+ * Free a device structure, all reports, and all fields.
+ */
+
+static void hid_device_release(struct device *dev)
+{
+	struct hid_device *hid = container_of(dev, struct hid_device, dev);
+
+	hid_close_report(hid);
+	kfree(hid->dev_rdesc);
+	kfree(hid);
 }
 
 /*
@@ -643,15 +665,37 @@
  * @start: report start
  * @size: report size
  *
+ * Allocate the device report as read by the bus driver. This function should
+ * only be called from parse() in ll drivers.
+ */
+int hid_parse_report(struct hid_device *hid, __u8 *start, unsigned size)
+{
+	hid->dev_rdesc = kmemdup(start, size, GFP_KERNEL);
+	if (!hid->dev_rdesc)
+		return -ENOMEM;
+	hid->dev_rsize = size;
+	return 0;
+}
+EXPORT_SYMBOL_GPL(hid_parse_report);
+
+/**
+ * hid_open_report - open a driver-specific device report
+ *
+ * @device: hid device
+ *
  * Parse a report description into a hid_device structure. Reports are
  * enumerated, fields are attached to these reports.
  * 0 returned on success, otherwise nonzero error value.
+ *
+ * This function (or the equivalent hid_parse() macro) should only be
+ * called from probe() in drivers, before starting the device.
  */
-int hid_parse_report(struct hid_device *device, __u8 *start,
-		unsigned size)
+int hid_open_report(struct hid_device *device)
 {
 	struct hid_parser *parser;
 	struct hid_item item;
+	unsigned int size;
+	__u8 *start;
 	__u8 *end;
 	int ret;
 	static int (*dispatch_type[])(struct hid_parser *parser,
@@ -662,6 +706,14 @@
 		hid_parser_reserved
 	};
 
+	if (WARN_ON(device->status & HID_STAT_PARSED))
+		return -EBUSY;
+
+	start = device->dev_rdesc;
+	if (WARN_ON(!start))
+		return -ENODEV;
+	size = device->dev_rsize;
+
 	if (device->driver->report_fixup)
 		start = device->driver->report_fixup(device, start, &size);
 
@@ -679,6 +731,15 @@
 	parser->device = device;
 
 	end = start + size;
+
+	device->collection = kcalloc(HID_DEFAULT_NUM_COLLECTIONS,
+				     sizeof(struct hid_collection), GFP_KERNEL);
+	if (!device->collection) {
+		ret = -ENOMEM;
+		goto err;
+	}
+	device->collection_size = HID_DEFAULT_NUM_COLLECTIONS;
+
 	ret = -EINVAL;
 	while ((start = fetch_item(start, end, &item)) != NULL) {
 
@@ -704,6 +765,7 @@
 				goto err;
 			}
 			vfree(parser);
+			device->status |= HID_STAT_PARSED;
 			return 0;
 		}
 	}
@@ -711,9 +773,10 @@
 	hid_err(device, "item fetching failed at offset %d\n", (int)(end - start));
 err:
 	vfree(parser);
+	hid_close_report(device);
 	return ret;
 }
-EXPORT_SYMBOL_GPL(hid_parse_report);
+EXPORT_SYMBOL_GPL(hid_open_report);
 
 /*
  * Convert a signed n-bit integer to signed 32-bit integer. Common
@@ -1718,12 +1781,14 @@
 		if (hdrv->probe) {
 			ret = hdrv->probe(hdev, id);
 		} else { /* default probe */
-			ret = hid_parse(hdev);
+			ret = hid_open_report(hdev);
 			if (!ret)
 				ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
 		}
-		if (ret)
+		if (ret) {
+			hid_close_report(hdev);
 			hdev->driver = NULL;
+		}
 	}
 unlock:
 	up(&hdev->driver_lock);
@@ -1744,6 +1809,7 @@
 			hdrv->remove(hdev);
 		else /* default remove */
 			hid_hw_stop(hdev);
+		hid_close_report(hdev);
 		hdev->driver = NULL;
 	}
 
@@ -2075,6 +2141,16 @@
             && (hid_ignore(hdev) || (hdev->quirks & HID_QUIRK_IGNORE)))
 		return -ENODEV;
 
+	/*
+	 * Read the device report descriptor once and use as template
+	 * for the driver-specific modifications.
+	 */
+	ret = hdev->ll_driver->parse(hdev);
+	if (ret)
+		return ret;
+	if (!hdev->dev_rdesc)
+		return -ENODEV;
+
 	/* XXX hack, any other cleaner solution after the driver core
 	 * is converted to allow more than 20 bytes as the device name? */
 	dev_set_name(&hdev->dev, "%04X:%04X:%04X.%04X", hdev->bus,
@@ -2103,7 +2179,6 @@
 struct hid_device *hid_allocate_device(void)
 {
 	struct hid_device *hdev;
-	unsigned int i;
 	int ret = -ENOMEM;
 
 	hdev = kzalloc(sizeof(*hdev), GFP_KERNEL);
@@ -2114,23 +2189,13 @@
 	hdev->dev.release = hid_device_release;
 	hdev->dev.bus = &hid_bus_type;
 
-	hdev->collection = kcalloc(HID_DEFAULT_NUM_COLLECTIONS,
-			sizeof(struct hid_collection), GFP_KERNEL);
-	if (hdev->collection == NULL)
-		goto err;
-	hdev->collection_size = HID_DEFAULT_NUM_COLLECTIONS;
-
-	for (i = 0; i < HID_REPORT_TYPES; i++)
-		INIT_LIST_HEAD(&hdev->report_enum[i].report_list);
+	hid_close_report(hdev);
 
 	init_waitqueue_head(&hdev->debug_wait);
 	INIT_LIST_HEAD(&hdev->debug_list);
 	sema_init(&hdev->driver_lock, 1);
 
 	return hdev;
-err:
-	put_device(&hdev->dev);
-	return ERR_PTR(ret);
 }
 EXPORT_SYMBOL_GPL(hid_allocate_device);
 
@@ -2141,6 +2206,9 @@
 		hid_debug_unregister(hdev);
 		hdev->status &= ~HID_STAT_ADDED;
 	}
+	kfree(hdev->dev_rdesc);
+	hdev->dev_rdesc = NULL;
+	hdev->dev_rsize = 0;
 }
 
 /**