tree b82eced997bba62e83810b80b776bb7501e67f2b
parent 5d1f79ba438dc372c9bddb729d630abbc6e1068b
author Ilias Apalodimas <ilias.apalodimas@linaro.org> 1595403142 +0300
committer Heinrich Schuchardt <xypron.glpk@gmx.de> 1595413961 +0200

efi_loader: Check for the native OP-TEE result on mm_communicate calls

Currently we only check for the return value of tee_invoke_func().
Although OP-TEE and StMM will correctly set param[1].u.value.a and we'll
eventually return an error, the correct thing to do is check for the
OP_TEE return code as well.
So let's check for that and move tee_shm_free() and tee_close_session()
before exiting with an error to make sure we always clear the registered
memory.

Fixes: f042e47e8fb43 ("efi_loader: Implement EFI variable handling via OP-TEE")
Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Use EFI_DEVICE_ERROR for TEE communication problems.
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>