Re: [PATCH v4 10/53] semihosting: Adjust error checking in common_semi_cb

[Alex Bennée]

Richard Henderson <richard.henderson@linaro.org> writes:

> The err parameter is non-zero if and only if an error occured.
> Use this instead of ret == -1 for determining if we need to
> update the saved errno.
>
> This fixes the errno setting of SYS_ISTTY, which returns 0 on
> error, not -1.
>
> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>

-- 
Alex Bennée