[libvirt] [PATCH] tpm: Use /dev/null for cancel path if none was found

[Stefan Berger]

TPM 2 does not implement sysfs files for cancellation of commands.
We therefore use /dev/null for the cancel path passed to QEMU.

Signed-off-by: Stefan Berger <stefanb at linux.vnet.ibm.com>
---
 src/util/virtpm.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/src/util/virtpm.c b/src/util/virtpm.c
index 6d9b065..d5c10da 100644
--- a/src/util/virtpm.c
+++ b/src/util/virtpm.c
@@ -61,9 +61,7 @@ virTPMCreateCancelPath(const char *devpath)
                 VIR_FREE(path);
             }
             if (!path)
-                virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
-                               _("No usable sysfs TPM cancel file could be "
-                                 "found"));
+                ignore_value(VIR_STRDUP(path, "/dev/null"));
         } else {
             virReportError(VIR_ERR_INTERNAL_ERROR,
                            _("TPM device path %s is invalid"), devpath);
-- 
2.5.5