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From: Daniel Vetter <daniel@ffwll.ch>
Date: Tue, 9 Jan 2024 14:42:19 +0100
Message-ID: <CAKMK7uFbjQ1apr3-XrnWTH=TwRqW_9TDZ-21QAwJtiNB5FZ8dA@mail.gmail.com>
Subject: Re: [PATCH v2] drm/vram-helper: fix kernel-doc warnings
To: Randy Dunlap <rdunlap@infradead.org>
Cc: Thomas Zimmermann <tzimmermann@suse.de>, linux-kernel@vger.kernel.org, 
	David Airlie <airlied@gmail.com>, dri-devel@lists.freedesktop.org, 
	Maarten Lankhorst <maarten.lankhorst@linux.intel.com>, Maxime Ripard <mripard@kernel.org>, 
	linux-doc@vger.kernel.org, Jonathan Corbet <corbet@lwn.net>
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On Tue, 9 Jan 2024 at 13:59, Daniel Vetter <daniel@ffwll.ch> wrote:
>
> On Mon, Jan 08, 2024 at 01:10:12PM -0800, Randy Dunlap wrote:
> > Hi Thomas,
> >
> > On 1/8/24 00:57, Thomas Zimmermann wrote:
> > > Hi,
> > >
> > > thanks for the fix.
> > >
> > > Am 06.01.24 um 04:29 schrieb Randy Dunlap:
> > >> Remove the @funcs entry from struct drm_vram_mm to quieten the kernel-doc
> > >> warning.
> > >>
> > >> Use the "define" kernel-doc keyword and an '\' line continuation
> > >> to fix another kernel-doc warning.
> > >>
> > >> drm_gem_vram_helper.h:129: warning: missing initial short description on line:
> > >>   * DRM_GEM_VRAM_PLANE_HELPER_FUNCS -
> > >> drm_gem_vram_helper.h:185: warning: Excess struct member 'funcs' description in 'drm_vram_mm'
> > >>
> > >> Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
> > >> Cc: David Airlie <airlied@gmail.com>
> > >> Cc: Daniel Vetter <daniel@ffwll.ch>
> > >> Cc: dri-devel@lists.freedesktop.org
> > >> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
> > >> Cc: Maxime Ripard <mripard@kernel.org>
> > >> Cc: Thomas Zimmermann <tzimmermann@suse.de>
> > >> ---
> > >> v2: Add commit description
> > >>
> > >> base-commit: 610a9b8f49fbcf1100716370d3b5f6f884a2835a
> > >>
> > >>   include/drm/drm_gem_vram_helper.h |    3 +--
> > >>   1 file changed, 1 insertion(+), 2 deletions(-)
> > >>
> > >> diff -- a/include/drm/drm_gem_vram_helper.h b/include/drm/drm_gem_vram_helper.h
> > >> --- a/include/drm/drm_gem_vram_helper.h
> > >> +++ b/include/drm/drm_gem_vram_helper.h
> > >> @@ -126,7 +126,7 @@ drm_gem_vram_plane_helper_cleanup_fb(str
> > >>                        struct drm_plane_state *old_state);
> > >>     /**
> > >> - * DRM_GEM_VRAM_PLANE_HELPER_FUNCS -
> > >> + * define DRM_GEM_VRAM_PLANE_HELPER_FUNCS - \
> > >
> > > Did something change wrt. doc syntax? I think this used to work without warnings. About this 'define': we don't use is in another docs. Can we leave it out here or is this the new syntax?
> > >
> >
> > There are no doc syntax changes that I know of. This is not
> > new syntax. It has been around since 2014:
> >   cbb4d3e6510b ("scripts/kernel-doc: handle object-like macros")
>
> I had no idea this exists, thanks a lot for this TIL :-)
>
> I guess the issue here is that this exists, yay, but it's not documented
> with the other here:
>
> https://dri.freedesktop.org/docs/drm/doc-guide/kernel-doc.html#structure-union-and-enumeration-documentation
>
> I guess a patch to kernel-doc.rst would be great. Adding some kernel-doc
> folks.

Ok I went ahead and typed that patch (just we don't waste effort),
just waiting for the sphinx build to finish to make sure it looks nice
before I send out the patch.
-Sima
-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch