linux-kernel - [PATCH] tpm: ibmvtpm: Call tpm2_sessions_init() to initialize session support

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Date: Mon, 17 Jun 2024 15:34:08 -0400
From: Stefan Berger <stefanb@...ux.ibm.com>
To: linux-integrity@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        jarkko@...nel.org
Cc: linux-kernel@...r.kernel.org, mpe@...erman.id.au,
        naveen.n.rao@...ux.ibm.com, Stefan Berger <stefanb@...ux.ibm.com>
Subject: [PATCH] tpm: ibmvtpm: Call tpm2_sessions_init() to initialize session support

Fix the following type of error message caused by a missing call to
tpm2_sessions_init() in the IBM vTPM driver:

[    2.987131] tpm tpm0: tpm2_load_context: failed with a TPM error 0x01C4
[    2.987140] ima: Error Communicating to TPM chip, result: -14

Fixes: d2add27cf2b8 ("tpm: Add NULL primary creation")
Signed-off-by: Stefan Berger <stefanb@...ux.ibm.com>
---
 drivers/char/tpm/tpm_ibmvtpm.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/char/tpm/tpm_ibmvtpm.c b/drivers/char/tpm/tpm_ibmvtpm.c
index d3989b257f42..1e5b107d1f3b 100644
--- a/drivers/char/tpm/tpm_ibmvtpm.c
+++ b/drivers/char/tpm/tpm_ibmvtpm.c
@@ -698,6 +698,10 @@ static int tpm_ibmvtpm_probe(struct vio_dev *vio_dev,
 		rc = tpm2_get_cc_attrs_tbl(chip);
 		if (rc)
 			goto init_irq_cleanup;
+
+		rc = tpm2_sessions_init(chip);
+		if (rc)
+			goto init_irq_cleanup;
 	}
 
 	return tpm_chip_register(chip);
-- 
2.45.2