FWIW, I agree this is the right fix, but:

Andrew Bennett <andrew.benn...@imgtec.com> writes:
> +  /* When using branch likely (-mfix-r10000), the delay slot instruction
> +     will be annulled on false.  The normal delay slot instructions
> +     calculate the overall result of the atomic operation and must not
> +     be annulled.  To ensure this behaviour unconditionally use a NOP
> +     in the delay slot for the branch likely case.  */

remember to use US spelling: "behavior" rather than "behaviour".

Thanks,
Richard

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