[U-Boot] [U-Boot, 1/1] tee: change return code for REE FS supplicant cmd

[Tom Rini]

On Tue, Dec 04, 2018 at 02:37:19PM +0200, Igor Opaniuk wrote:

> If OP-TEE core is compiled with support of REE FS and RPMB
> at the same time (CFG_RPMB_FS ?= y; CFG_RPMB_FS ?= y), and persistent
> storage API is used with TEE_STORAGE_PRIVATE storage id, it will
> lead to TA panic.
> 
> E/TC:? 0 TA panicked with code 0xffff0009
> .....
> E/TC:? 0 Call stack:
> E/TC:? 0  0x000000004002f2f8 TEE_OpenPersistentObject at
> lib/libutee/tee_api_objects.c:422
> 
> In this particular case TEE_ERROR_STORAGE_NOT_AVAILABLE is more suitable
> than TEE_ERROR_NOT_IMPLEMENTED, as it provides to a TA a possibility
> to handle this error code [1].
> 
> >From GPD TEE Internal Core specification [2]:
> TEE_ERROR_STORAGE_NOT_AVAILABLE - if the persistent object is stored in a
> storage area which is currently inaccessible. It may be associated with
> the device but unplugged, busy, or inaccessible for some other reason.
> 
> [1]: https://github.com/OP-TEE/optee_os/blob/94db01ef448d1e552161c2d861d57a5f8bda0cc0/lib/libutee/tee_api_objects.c#L419
> [2]: https://globalplatform.org/wp-content/uploads/2018/06/GPD_TEE_Internal_Core_API_Specification_v1.1.2.50_PublicReview.pdf
> 
> Signed-off-by: Igor Opaniuk <igor.opaniuk at linaro.org>
> Reviewed-by: Jens Wiklander <jens.wiklander at linaro.org>

Applied to u-boot/master, thanks!

-- 
Tom
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