mei: drop redundant length parameter from mei_write_message function

The length is already part of the message header and it is validated
before the function call

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/misc/mei/main.c b/drivers/misc/mei/main.c
index 43fb52f..b281c23 100644
--- a/drivers/misc/mei/main.c
+++ b/drivers/misc/mei/main.c
@@ -554,8 +554,7 @@
 	mei_hdr.reserved = 0;
 	dev_dbg(&dev->pdev->dev, "call mei_write_message header=%08x.\n",
 	    *((u32 *) &mei_hdr));
-	if (mei_write_message(dev, &mei_hdr,
-		write_cb->request_buffer.data, mei_hdr.length)) {
+	if (mei_write_message(dev, &mei_hdr, write_cb->request_buffer.data)) {
 		rets = -ENODEV;
 		goto err;
 	}