linux-kernel - Re: [PATCH v2] checkpatch: use patch subject when reading from stdin

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Date:   Wed, 6 May 2020 08:55:40 +0200
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     Geert Uytterhoeven <geert+renesas@...der.be>,
        Andy Whitcroft <apw@...onical.com>,
        Joe Perches <joe@...ches.com>,
        Konstantin Ryabitsev <konstantin@...uxfoundation.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        "users@...ux.kernel.org" <users@...ux.kernel.org>
Subject: Re: [PATCH v2] checkpatch: use patch subject when reading from stdin

Hi Andrew,

On Tue, May 5, 2020 at 9:18 PM Andrew Morton <akpm@...ux-foundation.org> wrote:
> On Tue,  5 May 2020 15:26:13 +0200 Geert Uytterhoeven <geert+renesas@...der.be> wrote:
> > While "git am" can apply an mbox file containing multiple patches (e.g.
> > as created by b4[1], or a patch bundle downloaded from patchwork),
> > checkpatch does not have proper support for that.  When operating on an
> > mbox, checkpatch will merge all detected tags, and complain falsely
> > about duplicates:
> >
> >     WARNING: Duplicate signature
> >
> > As modifying checkpatch to reset state in between each patch is a lot of
> > work, a simple solution is splitting the mbox into individual patches,
> > and invoking checkpatch for each of them.  Fortunately checkpatch can read
> > a patch from stdin, so the classic "formail" tool can be used to split
> > the mbox, and pipe all individual patches to checkpatch:
> >
> >     formail -s scripts/checkpatch.pl < my-mbox
> >
> > However, when reading a patch file from standard input, checkpatch calls
> > it "Your patch", and reports its state as:
> >
> >     Your patch has style problems, please review.
> >
> > or:
> >
> >     Your patch has no obvious style problems and is ready for submission.
>
> Showing the proposed "after patch" output would be helpful.  It seems
> that it will be
>
>         "checkpatch: use patch subject when reading from stdin" has no obvious style problems and is ready for submission.
>
> yes?

Almost right:

"[PATCH v2] checkpatch: use patch subject when reading from stdin" has
no obvious style problems and is ready for submission.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds