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KEYS: trusted: tee: Make registered shm dependency explicit 

TEE trusted keys support depends on registered shared memory support
since the key buffers are needed to be registered with OP-TEE. So make
that dependency explicit to not register trusted keys support if
underlying implementation doesn't support registered shared memory.

Signed-off-by: Sumit Garg <sumit.garg@linaro.org>
Tested-by: Jerome Forissier <jerome.forissier@linaro.org>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
This commit is contained in:
Sumit Garg 2022-11-10 16:41:40 +05:30 committed by Jarkko Sakkinen
parent e10de46bc3
commit 1506fba28b
1 changed files with 2 additions and 1 deletions
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3
security/keys/trusted-keys/trusted_tee.c
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@ -219,7 +219,8 @@ static int trusted_tee_get_random(unsigned char *key, size_t key_len)
static int optee_ctx_match(struct tee_ioctl_version_data *ver, const void *data)
{
if (ver->impl_id == TEE_IMPL_ID_OPTEE)
if (ver->impl_id == TEE_IMPL_ID_OPTEE &&
ver->gen_caps & TEE_GEN_CAP_REG_MEM)
return 1;
else
return 0;