Re: [XEN PATCH 08/10] xen/errno: address violations of MISRA C Rule 20.7

[Stefano Stabellini <sstabellini@xxxxxxxxxx>]

On Thu, 29 Feb 2024, Nicola Vetrini wrote:
> MISRA C Rule 20.7 states: "Expressions resulting from the expansion
> of macro parameters shall be enclosed in parentheses". Therefore, some
> macro definitions should gain additional parentheses to ensure that all
> current and future users will be safe with respect to expansions that
> can possibly alter the semantics of the passed-in macro parameter.
> 
> No functional change.
> 
> Signed-off-by: Nicola Vetrini <nicola.vetrini@xxxxxxxxxxx>
> ---
>  xen/include/xen/errno.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/xen/include/xen/errno.h b/xen/include/xen/errno.h
> index 69b28dd3c6c5..506674701fae 100644
> --- a/xen/include/xen/errno.h
> +++ b/xen/include/xen/errno.h
> @@ -3,7 +3,7 @@
>  
>  #ifndef __ASSEMBLY__
>  
> -#define XEN_ERRNO(name, value) name = value,
> +#define XEN_ERRNO(name, value) name = (value),

I see this and the fact that "name" was not parenthesized and it would
deliberate right? So I guess the left side of an assignment doesn't need
parenthesis?