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-rw-r--r--tools/testing/selftests/tpm2/tpm2.py4
1 files changed, 2 insertions, 2 deletions
diff --git a/tools/testing/selftests/tpm2/tpm2.py b/tools/testing/selftests/tpm2/tpm2.py
index 6fc99ce025b5..828c18584624 100644
--- a/tools/testing/selftests/tpm2/tpm2.py
+++ b/tools/testing/selftests/tpm2/tpm2.py
@@ -358,9 +358,9 @@ class Client:
self.flags = flags
if (self.flags & Client.FLAG_SPACE) == 0:
- self.tpm = open('/dev/tpm0', 'r+b')
+ self.tpm = open('/dev/tpm0', 'r+b', buffering=0)
else:
- self.tpm = open('/dev/tpmrm0', 'r+b')
+ self.tpm = open('/dev/tpmrm0', 'r+b', buffering=0)
def close(self):
self.tpm.close()