linux-kernel - Re: [PATCH v2 1/9] list: add list_last_entry_or

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Message-ID: <20250902135709.19e1ef54@booty>
Date: Tue, 2 Sep 2025 13:57:09 +0200
From: Luca Ceresoli <luca.ceresoli@...tlin.com>
To: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc: Andrzej Hajda <andrzej.hajda@...el.com>, Neil Armstrong
 <neil.armstrong@...aro.org>, Robert Foss <rfoss@...nel.org>, Laurent
 Pinchart <Laurent.pinchart@...asonboard.com>, Jonas Karlman
 <jonas@...boo.se>, Jernej Skrabec <jernej.skrabec@...il.com>, Maarten
 Lankhorst <maarten.lankhorst@...ux.intel.com>, Maxime Ripard
 <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>, David Airlie
 <airlied@...il.com>, Simona Vetter <simona@...ll.ch>, Liu Ying
 <victor.liu@....com>, Shawn Guo <shawnguo@...nel.org>, Sascha Hauer
 <s.hauer@...gutronix.de>, Pengutronix Kernel Team <kernel@...gutronix.de>,
 Fabio Estevam <festevam@...il.com>, Tomi Valkeinen
 <tomi.valkeinen@...asonboard.com>, Philipp Zabel <p.zabel@...gutronix.de>,
 Hui Pu <Hui.Pu@...ealthcare.com>, Thomas Petazzoni
 <thomas.petazzoni@...tlin.com>, linux-kernel@...r.kernel.org,
 dri-devel@...ts.freedesktop.org, imx@...ts.linux.dev,
 linux-arm-kernel@...ts.infradead.org, Andrew Morton
 <akpm@...ux-foundation.org>, Zijun Hu <quic_zijuhu@...cinc.com>, Greg
 Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: Re: [PATCH v2 1/9] list: add list_last_entry_or_null()

Hello DRM maintainers,

On Wed, 20 Aug 2025 16:43:56 +0300
Andy Shevchenko <andriy.shevchenko@...ux.intel.com> wrote:

> On Thu, Aug 14, 2025 at 06:36:09PM +0200, Luca Ceresoli wrote:
> > On Wed, 6 Aug 2025 00:55:02 +0300
> > Andy Shevchenko <andriy.shevchenko@...ux.intel.com> wrote:
> >   
> > > On Fri, Aug 01, 2025 at 07:05:23PM +0200, Luca Ceresoli wrote:  
> > > > Add an equivalent of list_first_entry_or_null() to obtain the last element
> > > > of a list.    
> > > 
> > > Acked-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>  
> > 
> > Thanks Andy!
> > 
> > However I'm not sure when and where this should be applied.
> > 
> > Except for this one patch, all patches in the series are for
> > drm-misc-next. Also, patch 1 is currently not needed by any other
> > series AFAIK.
> > 
> > Based on the above, is it correct to assume that the whole series can
> > be applied on drm-misc-next? (when other patches will have a
> > R-by/Ack-by of course)
> > 
> > Also, is Andy's A-by enough to apply this patch?  
> 
> The list.h is common for many, I think going via DRM with my Ack is enough
> based on the Git history of my changes in this file. But if you want more
> reliable source, get an Ack from Andrew Morton.

While applying this patch with dim on drm-misc-next, dim push-branch
failed because:

  dim: ERROR: cb86408b1fc2 ("list: add list_last_entry_or_null()"): Mandatory Maintainer Acked-by missing., aborting

Looking at the dim code, it is looking for a Reviewed- or Acked-by from
people listed by `scripts/get_maintainer.pl --no-git-fallback -m --nol
--norolestats`. but that command returns an empty string, so it will
never allow me to push.

How can I get that commit pushed to drm-misc-next?

I think `dim push-branch -f` would work: am I supposed to use it?

(not sure my committer rights allow that)

Luca

-- 
Luca Ceresoli, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com