From: Juan Quintela <quintela@redhat.com>
Date: Wed, 17 Jun 2015 00:06:20 +0000 (+0200)
Subject: migration: Use cmpxchg correctly
X-Git-Tag: TizenStudio_2.0_p2.3.2~208^2~78^2~9
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=a5c17b5f68ff7e37ce6e6e1f5457307fe07629e7;p=sdk%2Femulator%2Fqemu.git

migration: Use cmpxchg correctly

cmpxchg returns the old value

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
---

diff --git a/migration/migration.c b/migration/migration.c
index edb4f3e..1e34aa5 100644
--- a/migration/migration.c
+++ b/migration/migration.c
@@ -509,7 +509,7 @@ void qmp_migrate_set_parameters(bool has_compress_level,
 
 static void migrate_set_state(MigrationState *s, int old_state, int new_state)
 {
-    if (atomic_cmpxchg(&s->state, old_state, new_state) == new_state) {
+    if (atomic_cmpxchg(&s->state, old_state, new_state) == old_state) {
         trace_migrate_set_state(new_state);
     }
 }