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[46.5.122.62]) by smtp.gmail.com with UTF8SMTPSA id a640c23a62f3a-b7cfa56c152sm1380034166b.56.2025.12.15.06.17.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 15 Dec 2025 06:17:34 -0800 (PST) From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= To: Jens Wiklander , Jonathan Corbet , Sumit Garg , Olivia Mackall , Herbert Xu , =?utf-8?b?Q2zDqW1lbnQgTMOpZ2Vy?= , Alexandre Belloni , Ard Biesheuvel , Maxime Coquelin , Alexandre Torgue , Sumit Garg , Ilias Apalodimas , Jan Kiszka , =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= , Sudeep Holla , Christophe JAILLET , =?utf-8?b?UmFmYcWCIE1pxYJlY2tp?= , Michael Chan , Pavan Chebbi , James Bottomley , Jarkko Sakkinen , Mimi Zohar , David Howells , Paul Moore , James Morris , "Serge E. Hallyn" , Peter Huewe Cc: op-tee@lists.trustedfirmware.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, linux-crypto@vger.kernel.org, linux-rtc@vger.kernel.org, linux-efi@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, Cristian Marussi , arm-scmi@vger.kernel.org, linux-mips@vger.kernel.org, netdev@vger.kernel.org, linux-integrity@vger.kernel.org, keyrings@vger.kernel.org, linux-security-module@vger.kernel.org, Jason Gunthorpe Subject: [PATCH v2 00/17] tee: Use bus callbacks instead of driver callbacks Date: Mon, 15 Dec 2025 15:16:30 +0100 Message-ID: X-Mailer: git-send-email 2.47.3 Precedence: bulk X-Mailing-List: linux-security-module@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-Developer-Signature: v=1; a=openpgp-sha256; l=3083; i=u.kleine-koenig@baylibre.com; h=from:subject:message-id; bh=KVuyHGeUtpLkpGJYZbfb5WtDJicjtg3giXBlS+vhN0U=; b=owEBbQGS/pANAwAKAY+A+1h9Ev5OAcsmYgBpQBhBsL1Z+rYFoGFHUfEy6nbD85QotpwGnuS0G OxYNqNRFI2JATMEAAEKAB0WIQQ/gaxpOnoeWYmt/tOPgPtYfRL+TgUCaUAYQQAKCRCPgPtYfRL+ TugUB/9E31O/wKyUkNJNEPUiyayhLen3mT/3afyja8AKlZtLRRSDYD85SklWs8WUYR25f620Tug HCQFCBGP6zvWFDFUJWDts8iS5V7u/2f3fzK4EwWEIO8RjWf//RCGbcOXzrjD+gHhyiO4ntF2NWr 3ospR0B/APcHFEMI3zfkmIaPNlyEhNrddsNRbaHKA+WTWhZm7A/yqOnVYIJ6MLuTrhjHLZZoL5u gBimMOyT/Dmu6TUF9ex7Rhk+vookCt9jpn+vbxsz0ArRtMIo0W8fVdouxPDFA9SMn/bCn6BBJ+B fl85F7WiQwNbfWoeC8/qrjWMCGDfxgyRZi39jRQ+nWgTC5V5 X-Developer-Key: i=u.kleine-koenig@baylibre.com; a=openpgp; fpr=0D2511F322BFAB1C1580266BE2DCDD9132669BD6 Content-Transfer-Encoding: 8bit Hello, the objective of this series is to make tee driver stop using callbacks in struct device_driver. These were superseded by bus methods in 2006 (commit 594c8281f905 ("[PATCH] Add bus_type probe, remove, shutdown methods.")) but nobody cared to convert all subsystems accordingly. Here the tee drivers are converted. The first commit is somewhat unrelated, but simplifies the conversion (and the drivers). It introduces driver registration helpers that care about setting the bus and owner. (The latter is missing in all drivers, so by using these helpers the drivers become more correct.) v1 of this series is available at https://lore.kernel.org/all/cover.1765472125.git.u.kleine-koenig@baylibre.com Changes since v1: - rebase to v6.19-rc1 (no conflicts) - add tags received so far - fix whitespace issues pointed out by Sumit Garg - fix shutdown callback to shutdown and not remove As already noted in v1's cover letter, this series should go in during a single merge window as there are runtime warnings when the series is only applied partially. Sumit Garg suggested to apply the whole series via Jens Wiklander's tree. If this is done the dependencies in this series are honored, in case the plan changes: Patches #4 - #17 depend on the first two. Note this series is only build tested. Uwe Kleine-König (17): tee: Add some helpers to reduce boilerplate for tee client drivers tee: Add probe, remove and shutdown bus callbacks to tee_client_driver tee: Adapt documentation to cover recent additions hwrng: optee - Make use of module_tee_client_driver() hwrng: optee - Make use of tee bus methods rtc: optee: Migrate to use tee specific driver registration function rtc: optee: Make use of tee bus methods efi: stmm: Make use of module_tee_client_driver() efi: stmm: Make use of tee bus methods firmware: arm_scmi: optee: Make use of module_tee_client_driver() firmware: arm_scmi: Make use of tee bus methods firmware: tee_bnxt: Make use of module_tee_client_driver() firmware: tee_bnxt: Make use of tee bus methods KEYS: trusted: Migrate to use tee specific driver registration function KEYS: trusted: Make use of tee bus methods tpm/tpm_ftpm_tee: Make use of tee specific driver registration tpm/tpm_ftpm_tee: Make use of tee bus methods Documentation/driver-api/tee.rst | 18 +---- drivers/char/hw_random/optee-rng.c | 26 ++---- drivers/char/tpm/tpm_ftpm_tee.c | 31 +++++--- drivers/firmware/arm_scmi/transports/optee.c | 32 +++----- drivers/firmware/broadcom/tee_bnxt_fw.c | 30 ++----- drivers/firmware/efi/stmm/tee_stmm_efi.c | 25 ++---- drivers/rtc/rtc-optee.c | 27 ++----- drivers/tee/tee_core.c | 84 ++++++++++++++++++++ include/linux/tee_drv.h | 12 +++ security/keys/trusted-keys/trusted_tee.c | 17 ++-- 10 files changed, 164 insertions(+), 138 deletions(-) base-commit: 8f0b4cce4481fb22653697cced8d0d04027cb1e8 -- 2.47.3