From 1e9eb78a879cdfedc3831cae92552c9b3fdcc04b Mon Sep 17 00:00:00 2001
From: Jordan Justen <jordan.l.justen@intel.com>
Date: Tue, 21 Feb 2012 23:18:48 -0800
Subject: [PATCH] blockdev: allow read-only pflash devices

Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
---
 blockdev.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/blockdev.c b/blockdev.c
index 7a6613a2d2..2c132a308b 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -595,7 +595,8 @@ DriveInfo *drive_init(QemuOpts *opts, int default_to_scsi)
         /* CDROM is fine for any interface, don't check.  */
         ro = 1;
     } else if (ro == 1) {
-        if (type != IF_SCSI && type != IF_VIRTIO && type != IF_FLOPPY && type != IF_NONE) {
+        if (type != IF_SCSI && type != IF_VIRTIO && type != IF_FLOPPY &&
+            type != IF_NONE && type != IF_PFLASH) {
             error_report("readonly not supported by this bus type");
             goto err;
         }