[libvirt] [PATCH] qemu: Compare group_names by STRNEQ not CHECK_EQ

[Han Han]

Fix issue introduced by 047cfb05ee. Since group_name is str, use STRNEQ
instead of CHECK_EQ to do comparition.

Signed-off-by: Han Han <hhan at redhat.com>
---
 src/qemu/qemu_domain.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index 86e80391e1..e6d0fbef04 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -9387,9 +9387,14 @@ qemuDomainDiskChangeSupported(virDomainDiskDefPtr disk,
     CHECK_EQ(blkdeviotune.size_iops_sec,
              "blkdeviotune size_iops_sec",
              true);
-    CHECK_EQ(blkdeviotune.group_name,
-             "blkdeviotune group_name",
-             true);
+    if (disk->blkdeviotune.group_name) {
+        if (STRNEQ(disk->blkdeviotune.group_name, orig_disk->blkdeviotune.group_name)) {
+            virReportError(VIR_ERR_OPERATION_UNSUPPORTED,
+                           _("cannot modify field '%s' of the disk"),
+                           "target");
+            return false;
+        }
+    }
 
     if (disk->serial && STRNEQ_NULLABLE(disk->serial, orig_disk->serial)) {
         virReportError(VIR_ERR_OPERATION_UNSUPPORTED,
-- 
2.20.1