raw-posix: Fix bdrv_flush error return values

bdrv_flush is supposed to use 0/-errno return values

Signed-off-by: Kevin Wolf <kwolf@redhat.com>

diff --git a/block/raw-posix.c b/block/raw-posix.c
index a624f56f8680a8f147c237492a8bafeae61b3d98..305998ddb3b52259f79be3c760e270021109aab0 100644 (file)
--- a/block/raw-posix.c
+++ b/block/raw-posix.c
@@ -839,7 +839,14 @@ static int raw_create(const char *filename, QEMUOptionParameter *options)
 static int raw_flush(BlockDriverState *bs)
 {
     BDRVRawState *s = bs->opaque;
-    return qemu_fdatasync(s->fd);
+    int ret;
+
+    ret = qemu_fdatasync(s->fd);
+    if (ret < 0) {
+        return -errno;
+    }
+
+    return 0;
 }
 
 #ifdef CONFIG_XFS