On Fri, Aug 09, 2019 at 02:22:45PM +0100, Mark Rutland wrote:

The arm_smccc_1_1_{smc,hvc}() macros for inline invocation take a res
pointer as their final argument, matching the out-of-line SMCCC
invocation functions.

However, the inline invocation macros are variadic, so it's easy to mess
up passsing the correct parameters.

passing

Instead, let's make them value-returning, which is less confusing.

I'm not completely sure I agree with you here because, as far as I can
tell, it means that we have a different calling convention for 1.0 (i.e.
arm_smccc_smc()) and 1.1 (i.e. arm_smccc_1_1_smc).

Can we do the same for 1.0 as well or am I missing something?

Will

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