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Mon, 14 Oct 2024 14:16:55 +0000 (GMT) From: Stefan Berger To: linux-integrity@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, jarkko@kernel.org Cc: linux-kernel@vger.kernel.org, Stefan Berger Subject: [PATCH] tpm: ibmvtpm: Set TPM_OPS_AUTO_STARTUP flag on driver Date: Mon, 14 Oct 2024 10:16:43 -0400 Message-ID: <20241014141643.3101129-1-stefanb@linux.ibm.com> X-Mailer: git-send-email 2.47.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: 0aBf7fkdgq3XZUQFyWYEQFy7zRSFB2aG X-Proofpoint-GUID: 0aBf7fkdgq3XZUQFyWYEQFy7zRSFB2aG X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1051,Hydra:6.0.680,FMLib:17.12.62.30 definitions=2024-10-14_10,2024-10-11_01,2024-09-30_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 priorityscore=1501 lowpriorityscore=0 phishscore=0 clxscore=1011 mlxscore=0 spamscore=0 mlxlogscore=999 impostorscore=0 suspectscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2409260000 definitions=main-2410140103 Content-Type: text/plain; charset="utf-8" Set the TPM_OPS_AUTO_STARTUP on the driver so that the ibmvtpm driver now uses tpm2_auto_startup and tpm1_auto_startup like many other drivers do. Remove tpm_get_timeouts, tpm2_get_cc_attrs_tbl, and tpm2_sessions_init calls from it since these will all be called in tpm2_auto_startup and tpm1_auto_startup. The exporting of the tpm2_session_init symbol was only necessary while the ibmvtpm driver was calling this function. Since this is not the case anymore, remove this symbol from being exported. What is new for the ibmvtpm driver is that now tpm2_do_selftest and tpm1_do_selftest will be called that send commands to the TPM to perform or continue its selftest. However, the firmware should already have sent these commands so that the TPM will not do much work at this time. Signed-off-by: Stefan Berger Reviewed-by: Jarkko Sakkinen --- drivers/char/tpm/tpm2-sessions.c | 1 - drivers/char/tpm/tpm_ibmvtpm.c | 15 +-------------- 2 files changed, 1 insertion(+), 15 deletions(-) diff --git a/drivers/char/tpm/tpm2-sessions.c b/drivers/char/tpm/tpm2-sessi= ons.c index 511c67061728..b1a0a37f14d7 100644 --- a/drivers/char/tpm/tpm2-sessions.c +++ b/drivers/char/tpm/tpm2-sessions.c @@ -1362,5 +1362,4 @@ int tpm2_sessions_init(struct tpm_chip *chip) =20 return rc; } -EXPORT_SYMBOL(tpm2_sessions_init); #endif /* CONFIG_TCG_TPM2_HMAC */ diff --git a/drivers/char/tpm/tpm_ibmvtpm.c b/drivers/char/tpm/tpm_ibmvtpm.c index 1e5b107d1f3b..76d048f63d55 100644 --- a/drivers/char/tpm/tpm_ibmvtpm.c +++ b/drivers/char/tpm/tpm_ibmvtpm.c @@ -450,6 +450,7 @@ static bool tpm_ibmvtpm_req_canceled(struct tpm_chip *c= hip, u8 status) } =20 static const struct tpm_class_ops tpm_ibmvtpm =3D { + .flags =3D TPM_OPS_AUTO_STARTUP, .recv =3D tpm_ibmvtpm_recv, .send =3D tpm_ibmvtpm_send, .cancel =3D tpm_ibmvtpm_cancel, @@ -690,20 +691,6 @@ static int tpm_ibmvtpm_probe(struct vio_dev *vio_dev, if (!strcmp(id->compat, "IBM,vtpm20")) chip->flags |=3D TPM_CHIP_FLAG_TPM2; =20 - rc =3D tpm_get_timeouts(chip); - if (rc) - goto init_irq_cleanup; - - if (chip->flags & TPM_CHIP_FLAG_TPM2) { - rc =3D tpm2_get_cc_attrs_tbl(chip); - if (rc) - goto init_irq_cleanup; - - rc =3D tpm2_sessions_init(chip); - if (rc) - goto init_irq_cleanup; - } - return tpm_chip_register(chip); init_irq_cleanup: do { --=20 2.43.0