From 592408b8cab08bb4ec4771d7b1e20343b7f072fc Mon Sep 17 00:00:00 2001
From: =?utf8?q?Andreas=20F=C3=A4rber?= <afaerber@suse.de>
Date: Fri, 21 Feb 2014 22:18:31 +0100
Subject: [PATCH] nvme: Permit zero-length block devices
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It may not be sensible for normal use cases, but it allows to use
/dev/null in QTest.

Acked-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
---
 hw/block/nvme.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/hw/block/nvme.c b/hw/block/nvme.c
index 2882ffefce..5fd8f89822 100644
--- a/hw/block/nvme.c
+++ b/hw/block/nvme.c
@@ -752,8 +752,8 @@ static int nvme_init(PCIDevice *pci_dev)
         return -1;
     }
 
-    bs_size =  bdrv_getlength(n->conf.bs);
-    if (bs_size <= 0) {
+    bs_size = bdrv_getlength(n->conf.bs);
+    if (bs_size < 0) {
         return -1;
     }
 
-- 
2.11.0