The attached patch fixes a race condition that occurs if after the

backend has been removed there are still requests pending. This patch
flushed all the pending requests.

Signed-off-by: Stefan Berger <stefanb@us.ibm.com>

diff --git a/linux-2.6-xen-sparse/drivers/xen/tpmback/xenbus.c b/linux-2.6-xen-sparse/drivers/xen/tpmback/xenbus.c
index 14d6feb75ee1d2befcf88c6f4f440f5bfb187429..6e118e7b242f7106f4a0804093bee059c5edbe1a 100644 (file)
--- a/linux-2.6-xen-sparse/drivers/xen/tpmback/xenbus.c
+++ b/linux-2.6-xen-sparse/drivers/xen/tpmback/xenbus.c
@@ -55,6 +55,7 @@ static int tpmback_remove(struct xenbus_device *dev)
                be->backend_watch.node = NULL;
        }
        if (be->tpmif) {
+               vtpm_release_packets(be->tpmif, 0);
                tpmif_put(be->tpmif);
                be->tpmif = NULL;
        }