Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging

pc, pci, vhost: fixes

Some fixes all over the place.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

# gpg: Signature made Thu 08 Jun 2017 20:04:24 BST
# gpg:                using RSA key 0x281F0DB8D28D5469
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>"
# gpg:                 aka "Michael S. Tsirkin <mst@redhat.com>"
# Primary key fingerprint: 0270 606B 6F3C DF3D 0B17  0970 C350 3912 AFBE 8E67
#      Subkey fingerprint: 5D09 FD08 71C8 F85B 94CA  8A0D 281F 0DB8 D28D 5469

* remotes/mst/tags/for_upstream:
  hw/pcie: fix the generic pcie root port to support migration
  nvdimm acpi: fix region format interface code
  vhost-user-bridge: fix iov_restore_front() warning

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 9 insertions, 2 deletions

diff --git a/tests/vhost-user-bridge.c b/tests/vhost-user-bridge.c
index 8618c20d53..1e5b5ca3da 100644
--- a/tests/vhost-user-bridge.c
+++ b/tests/vhost-user-bridge.c
@@ -220,12 +220,18 @@ vubr_handle_tx(VuDev *dev, int qidx)
     free(elem);
 }
 
+
+/* this function reverse the effect of iov_discard_front() it must be
+ * called with 'front' being the original struct iovec and 'bytes'
+ * being the number of bytes you shaved off
+ */
 static void
 iov_restore_front(struct iovec *front, struct iovec *iov, size_t bytes)
 {
     struct iovec *cur;
 
-    for (cur = front; front != iov; cur++) {
+    for (cur = front; cur != iov; cur++) {
+        assert(bytes >= cur->iov_len);
         bytes -= cur->iov_len;
     }
 
@@ -302,7 +308,8 @@ vubr_backend_recv_cb(int sock, void *ctx)
             }
             iov_from_buf(sg, elem->in_num, 0, &hdr, sizeof hdr);
             total += hdrlen;
-            assert(iov_discard_front(&sg, &num, hdrlen) == hdrlen);
+            ret = iov_discard_front(&sg, &num, hdrlen);
+            assert(ret == hdrlen);
         }
 
         struct msghdr msg = {