diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index dd679a582c2c..ec917690c263 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -757,6 +757,7 @@ int hid_open_report(struct hid_device *device)
 	struct hid_item item;
 	unsigned int size;
 	__u8 *start;
+	__u8 *buf;
 	__u8 *end;
 	int ret;
 	static int (*dispatch_type[])(struct hid_parser *parser,
@@ -775,12 +776,21 @@ int hid_open_report(struct hid_device *device)
 		return -ENODEV;
 	size = device->dev_rsize;
 
-	if (device->driver->report_fixup)
-		start = device->driver->report_fixup(device, start, &size);
-
-	device->rdesc = kmemdup(start, size, GFP_KERNEL);
-	if (device->rdesc == NULL)
+	buf = kmemdup(start, size, GFP_KERNEL);
+	if (buf == NULL)
 		return -ENOMEM;
+
+	if (device->driver->report_fixup)
+		start = device->driver->report_fixup(device, buf, &size);
+	else
+		start = buf;
+
+	start = kmemdup(start, size, GFP_KERNEL);
+	kfree(buf);
+	if (start == NULL)
+		return -ENOMEM;
+
+	device->rdesc = start;
 	device->rsize = size;
 
 	parser = vzalloc(sizeof(struct hid_parser));
diff --git a/drivers/hid/usbhid/hid-core.c b/drivers/hid/usbhid/hid-core.c
index dedd8e4e5c6d..8e0c4bf94ebc 100644
--- a/drivers/hid/usbhid/hid-core.c
+++ b/drivers/hid/usbhid/hid-core.c
@@ -1415,20 +1415,20 @@ static int hid_post_reset(struct usb_interface *intf)
 	 * configuration descriptors passed, we already know that
 	 * the size of the HID report descriptor has not changed.
 	 */
-	rdesc = kmalloc(hid->rsize, GFP_KERNEL);
+	rdesc = kmalloc(hid->dev_rsize, GFP_KERNEL);
 	if (!rdesc) {
 		dbg_hid("couldn't allocate rdesc memory (post_reset)\n");
 		return 1;
 	}
 	status = hid_get_class_descriptor(dev,
 				interface->desc.bInterfaceNumber,
-				HID_DT_REPORT, rdesc, hid->rsize);
+				HID_DT_REPORT, rdesc, hid->dev_rsize);
 	if (status < 0) {
 		dbg_hid("reading report descriptor failed (post_reset)\n");
 		kfree(rdesc);
 		return 1;
 	}
-	status = memcmp(rdesc, hid->rdesc, hid->rsize);
+	status = memcmp(rdesc, hid->dev_rdesc, hid->dev_rsize);
 	kfree(rdesc);
 	if (status != 0) {
 		dbg_hid("report descriptor changed\n");