linux-kernel - Re: [PATCH 2/8] kconfig: use parent->dep as the parentdep of 'menu'

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Date:   Tue, 17 Dec 2019 14:55:11 +0900
From:   Masahiro Yamada <masahiroy@...nel.org>
To:     Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>
Cc:     Ulf Magnusson <ulfalizer@...il.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/8] kconfig: use parent->dep as the parentdep of 'menu'

On Tue, Dec 17, 2019 at 1:14 PM Masahiro Yamada <masahiroy@...nel.org> wrote:
>
> In menu_finalize(), the dependency of a menu entry is propagated
> downwards.
>
> For the 'menu', ->dep and ->prompt->visible.expr are the same.

Just for clarification, this means
parent->dep and parent->prompt->visible.expr
have the same expression.

expr_eq(parent->dep, parent->prompt->visible.expr)
should return 1.



> Both accumulate the 'depends on' of itself and upper menu entries.
>
> Signed-off-by: Masahiro Yamada <masahiroy@...nel.org>
> ---
>
>  scripts/kconfig/menu.c | 8 +++-----
>  1 file changed, 3 insertions(+), 5 deletions(-)
>
> diff --git a/scripts/kconfig/menu.c b/scripts/kconfig/menu.c
> index b1b1ee8cf987..bbabf0a59ac4 100644
> --- a/scripts/kconfig/menu.c
> +++ b/scripts/kconfig/menu.c
> @@ -326,12 +326,10 @@ void menu_finalize(struct menu *parent)
>                          * choice value symbols.
>                          */
>                         parentdep = expr_alloc_symbol(sym);
> -               } else if (parent->prompt)
> -                       /* Menu node for 'menu' */
> -                       parentdep = parent->prompt->visible.expr;
> -               else
> -                       /* Menu node for 'if' */
> +               } else {
> +                       /* Menu node for 'menu', 'if' */
>                         parentdep = parent->dep;
> +               }
>
>                 /* For each child menu node... */
>                 for (menu = parent->list; menu; menu = menu->next) {
> --
> 2.17.1
>


-- 
Best Regards
Masahiro Yamada