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[11/16] nbd: make nbd_client_session_close() idempotent

Message ID 1387186277-9573-12-git-send-email-kraxel@redhat.com
State New
Headers show

Commit Message

Gerd Hoffmann Dec. 16, 2013, 9:31 a.m. UTC 
From: Marc-André Lureau <marcandre.lureau@redhat.com>

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
 block/nbd-client.c | 5 +++++
 1 file changed, 5 insertions(+)
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Patch

diff --git a/block/nbd-client.c b/block/nbd-client.c
index 3dfae1d..9156093 100644
--- a/block/nbd-client.c
+++ b/block/nbd-client.c
@@ -337,7 +337,12 @@  static void nbd_teardown_connection(NbdClientSession *client)
 
 void nbd_client_session_close(NbdClientSession *client)
 {
+    if (!client->bs) {
+        return;
+    }
+
     nbd_teardown_connection(client);
+    client->bs = NULL;
 }
 
 int nbd_client_session_init(NbdClientSession *client, BlockDriverState *bs,