[Qemu-devel] [PATCH 32/42] tpm-passthrough: make it safer to destroy after creation

[Marc-André Lureau]

Check fds values before closing, to avoid close(-1).

Signed-off-by: Marc-André Lureau <address@hidden>
---
 hw/tpm/tpm_passthrough.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/hw/tpm/tpm_passthrough.c b/hw/tpm/tpm_passthrough.c
index 7371d50739..aa9167e3c6 100644
--- a/hw/tpm/tpm_passthrough.c
+++ b/hw/tpm/tpm_passthrough.c
@@ -347,8 +347,12 @@ static void tpm_passthrough_inst_finalize(Object *obj)
 
     tpm_passthrough_cancel_cmd(TPM_BACKEND(obj));
 
-    qemu_close(tpm_pt->tpm_fd);
-    qemu_close(tpm_pt->cancel_fd);
+    if (tpm_pt->tpm_fd >= 0) {
+        qemu_close(tpm_pt->tpm_fd);
+    }
+    if (tpm_pt->cancel_fd >= 0) {
+        qemu_close(tpm_pt->cancel_fd);
+    }
     qapi_free_TPMPassthroughOptions(tpm_pt->options);
 }
 
-- 
2.14.1.146.gd35faa819