arm/arm64: smccc: Make function identifiers an unsigned quantity

Function identifiers are a 32bit, unsigned quantity. But we never
tell so to the compiler, resulting in the following:

 4ac:   b26187e0        mov     x0, #0xffffffff80000001

We thus rely on the firmware narrowing it for us, which is not
always a reasonable expectation.

Cc: [email protected]
Reported-by: Ard Biesheuvel <[email protected]>
Acked-by: Ard Biesheuvel <[email protected]>
Reviewed-by: Robin Murphy <[email protected]>
Tested-by: Ard Biesheuvel <[email protected]>
Signed-off-by: Marc Zyngier <[email protected]>
Signed-off-by: Catalin Marinas <[email protected]>

0 files changed, 0 insertions, 0 deletions