linux-kernel - [PATCH v3] Kernel selftests: Add check if TPM devices are supported

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Date:   Thu, 21 May 2020 17:43:44 +0300
From:   Nikita Sobolev <Nikita.Sobolev@...opsys.com>
To:     Shuah Khan <shuah@...nel.org>, linux-kselftest@...r.kernel.org
Cc:     Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>,
        Tadeusz Struk <tadeusz.struk@...el.com>,
        Joey Pabalinas <joeypabalinas@...il.com>,
        Petr Vorel <petr.vorel@...il.com>,
        linux-kernel@...r.kernel.org, linux-integrity@...r.kernel.org,
        Jason Gunthorpe <jgg@...pe.ca>,
        Peter Huewe <peterhuewe@....de>,
        Alexey Brodkin <Alexey.Brodkin@...opsys.com>,
        Eugeniy Paltsev <Eugeniy.Paltsev@...opsys.com>,
        linux-snps-arc@...ts.infradead.org,
        Nikita Sobolev <Nikita.Sobolev@...opsys.com>
Subject: [PATCH v3] Kernel selftests: Add check if TPM devices are supported

TPM2 tests set uses /dev/tpm0 and /dev/tpmrm0 without check if they
are available. In case, when these devices are not available test
fails, but expected behaviour is skipped test.

Signed-off-by: Nikita Sobolev <Nikita.Sobolev@...opsys.com>
---
Changes for v2:
    - Coding Style cleanup

Changes for v3:
    - Commit text message cleanup

 tools/testing/selftests/tpm2/test_smoke.sh | 5 +++++
 tools/testing/selftests/tpm2/test_space.sh | 5 +++++
 2 files changed, 10 insertions(+)

diff --git a/tools/testing/selftests/tpm2/test_smoke.sh b/tools/testing/selftests/tpm2/test_smoke.sh
index 8155c2ea7ccb..663062701d5a 100755
--- a/tools/testing/selftests/tpm2/test_smoke.sh
+++ b/tools/testing/selftests/tpm2/test_smoke.sh
@@ -1,6 +1,11 @@
 #!/bin/bash
 # SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
 
+# Kselftest framework requirement - SKIP code is 4.
+ksft_skip=4
+
+[ -f /dev/tpm0 ] || exit $ksft_skip
+
 python -m unittest -v tpm2_tests.SmokeTest
 python -m unittest -v tpm2_tests.AsyncTest
 
diff --git a/tools/testing/selftests/tpm2/test_space.sh b/tools/testing/selftests/tpm2/test_space.sh
index a6f5e346635e..36c9d030a1c6 100755
--- a/tools/testing/selftests/tpm2/test_space.sh
+++ b/tools/testing/selftests/tpm2/test_space.sh
@@ -1,4 +1,9 @@
 #!/bin/bash
 # SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
 
+# Kselftest framework requirement - SKIP code is 4.
+ksft_skip=4
+
+[ -f /dev/tpmrm0 ] || exit $ksft_skip
+
 python -m unittest -v tpm2_tests.SpaceTest
-- 
2.16.2