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 These were superseded by bus methods in 2006 (commit 594c8281f905 ("[PATCH] Add bus_type probe, remove, shutdown methods."))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.co...
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