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| author | Arnd Bergmann <arnd@arndb.de> | 2023-12-22 10:42:19 +0000 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2023-12-22 10:42:19 +0000 |
| commit | 9d0e3c5a3d89bbd77c671a84301c38e0a71bfa14 (patch) | |
| tree | 73109355b77f7737c971b1972dc25bbfed678645 /drivers/firmware | |
| parent | 60cc77704eb23558c46a4428792515e48273dde0 (diff) | |
| parent | 4b391c9c37646f25118355f414b9e6d9fefe782f (diff) | |
| download | linux-9d0e3c5a3d89bbd77c671a84301c38e0a71bfa14.tar.gz | |
Merge tag 'system-thread-for-v6.8' of https://git.linaro.org/people/jens.wiklander/linux-tee into soc/drivers
OP-TEE add reserved system thread
Add support for a reserved system thread in the SMC-ABI of the OP-TEE driver.
SCMI with OP-TEE transport uses this to guarantee that it will always have
a thread available in the secure world.
* tag 'system-thread-for-v6.8' of https://git.linaro.org/people/jens.wiklander/linux-tee:
firmware: arm_scmi: optee: use optee system invocation
tee: optee: support tracking system threads
tee: system session
tee: optee: system thread call property
Link: https://lore.kernel.org/r/20231211102600.GA571787@rayden
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'drivers/firmware')
| -rw-r--r-- | drivers/firmware/arm_scmi/optee.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/firmware/arm_scmi/optee.c b/drivers/firmware/arm_scmi/optee.c index e123de6e8c67a..25bfb465484d0 100644 --- a/drivers/firmware/arm_scmi/optee.c +++ b/drivers/firmware/arm_scmi/optee.c @@ -440,6 +440,10 @@ static int scmi_optee_chan_setup(struct scmi_chan_info *cinfo, struct device *de if (ret) goto err_free_shm; + ret = tee_client_system_session(scmi_optee_private->tee_ctx, channel->tee_session); + if (ret) + dev_warn(dev, "Could not switch to system session, do best effort\n"); + ret = get_channel(channel); if (ret) goto err_close_sess; |