From 393c525b5bea6989380c4b57508ec901488079f0 Mon Sep 17 00:00:00 2001
From: "Michael S. Tsirkin" <mst@redhat.com>
Date: Thu, 23 Oct 2014 16:08:44 +0300
Subject: [PATCH] virtio_blk: make serial attribute static

It's never declared so no need to make it extern.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
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Reading git-format-patch failed