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Date: Thu, 2 May 2024 20:38:26 +0300
From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Sui Jingfeng <sui.jingfeng@linux.dev>
Cc: neil.armstrong@linaro.org, Maxime Ripard <mripard@kernel.org>,
	Randy Dunlap <rdunlap@infradead.org>,
	dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org,
	Jessica Zhang <quic_jesszhan@quicinc.com>,
	Sam Ravnborg <sam@ravnborg.org>,
	Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
	Thomas Zimmermann <tzimmermann@suse.de>,
	David Airlie <airlied@gmail.com>, Daniel Vetter <daniel@ffwll.ch>
Subject: Re: [v1,1/3] drm/panel: ili9341: Correct use of device property APIs
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On Fri, May 03, 2024 at 01:28:26AM +0800, Sui Jingfeng wrote:
> On 2024/5/2 15:34, Neil Armstrong wrote:
> > On 30/04/2024 11:34, Maxime Ripard wrote:
> > > On Tue, Apr 30, 2024 at 12:54:39AM +0800, Sui Jingfeng wrote:
> > > > On 2024/4/29 19:55, Maxime Ripard wrote:
> > > > > On Sat, Apr 27, 2024 at 01:57:46PM +0800, Sui Jingfeng wrote:
> > > > > > On 2024/4/26 14:23, Maxime Ripard wrote:
> > > > > > > On Fri, Apr 26, 2024 at 04:43:18AM +0800, Sui Jingfeng wrote:
> > > > > > > > On 2024/4/26 03:10, Andy Shevchenko wrote:
> > > > > > > > > On Fri, Apr 26, 2024 at 02:08:16AM +0800, Sui Jingfeng wrote:
> > > > > > > > > > On 2024/4/25 22:26, Andy Shevchenko wrote:

..

> > > > > > > > > > > It seems driver missed the point of proper use of device
> > > > > > > > > > > property APIs.  Correct this by updating headers and
> > > > > > > > > > > calls respectively.

> > > > > > > > > > You are using the 'seems' here exactly saying that you are
> > > > > > > > > > not 100% sure.

> > > > > > > > > > Please allow me to tell you the truth: This patch again has
> > > > > > > > > > ZERO effect.  It fix nothing. And this patch is has the
> > > > > > > > > > risks to be wrong.

> > > > > > > > > Huh?! Really, stop commenting the stuff you do not understand.

> > > > > > > > I'm actually a professional display drivers developer at the
> > > > > > > > downstream in the past, despite my contribution to upstream is
> > > > > > > > less. But I believe that all panel driver developers know what
> > > > > > > > I'm talking about. So please have take a look at my replies.

> > > > > > > Most of the interactions you had in this series has been uncalled
> > > > > > > for.  You might be against a patch, but there's no need to go to
> > > > > > > such length.
> > > > > > > 
> > > > > > > As far as I'm concerned, this patch is fine to me in itself, and
> > > > > > > I don't see anything that would prevent us from merging it.

> > > > > > No one is preventing you, as long as don't misunderstanding what
> > > > > > other people's technical replies intentionally. I'm just a usual
> > > > > > and normal contributor, I hope the world will better than
> > > > > > yesterday.

> > > > > You should seriously consider your tone when replying then.
> > > > > 
> > > > > > Saying such thing to me may not proper, I guess you may want to talk
> > > > > > to peoples who has the push rights

> > > > > I think you misunderstood me. My point was that your several rants
> > > > > were uncalled for and aren't the kind of things we're doing here.
> > > > > 
> > > > > I know very well how to get a patch merged, thanks.
> > > > > 
> > > > > > just make sure it isn't a insult to the professionalism of drm bridge
> > > > > > community itself though.

> > > > > I'm not sure why you're bringing the bridge community or its
> > > > > professionalism. It's a panel, not a bridge, and I never doubted the
> > > > > professionalism of anyone.
> > > > 
> > > > I means that the code itself could be adopted, as newer and younger
> > > > programmer (like Andy) need to be encouraged to contribute.
> > > 
> > > Andy has thousands of commits in Linux. He's *very* far from being a new
> > > contributor.
> > > 
> > > > I express no obvious objections, just hints him that something else
> > > > probably should also be taken into consideration as well.
> > > 
> > > That might be what you wanted to express, but you definitely didn't
> > > express it that way.
> > > 
> > > > On the other hand, we probably should allow other people participate in
> > > > discussion so that it is sufficient discussed and ensure that it won't
> > > > be reverted by someone in the future for some reasons. Backing to out
> > > > case happens here, we may need to move things forward.  Therefore, it
> > > > definitely deserve to have a try. It is not a big deal even though it
> > > > gets reverted someday.
> > > > 
> > > > In the end, I don't mind if you think there is nothing that could
> > > > prevent you from merge it, but I still suggest you have a glance at
> > > > peoples siting at the Cc list. I'm busy now and I have a lot of other
> > > > tasks to do, and may not be able to reply you emails on time. So it up
> > > > to you and other maintainers to decide.
> > > > Thank you.
> > > 
> > > So far, you're the only one who reviewed those patches. I'm not sure
> > > what you're talking about here.
> > 
> > Well I (as drm-panel maintainer) did review them positively

[...]

> > because the patches looked perfectly correct in regards of the commit
> > message
> 
> The point is the 'fixes' tag.
> 
> Then, can I ask what's the issue it fixes? I'm asking because I see the
> submitting-patches.html [1] documentation told us that a fixes tag indicates
> that the patch fixes an issue in a previous commit.
> 
> Previously, the driver only meant to be used on the DT systems, so what's issue?

It fixes copy'n'paste error as far as I understand the motivation of this code.

> [1] https://www.kernel.org/doc/html/latest/process/submitting-patches.html#reviewer-s-statement-of-oversight
> 
> I copy & paste the paragraph from link [1] for easier to read. See below:
> 
> "A Fixes: tag indicates that the patch fixes an issue in a previous commit. It
> is used to make it easy to determine where a bug originated, which can help
> review a bug fix. This tag also assists the stable kernel team in determining
> which stable kernel versions should receive your fix. This is the preferred
> method for indicating a bug fixed by the patch."
> 
> > and the patchset motivation and
> 
> OK, the motivation is good, I agree and I admit.
> 
> > because I trust Andy being a long time contributor with a lot of
> > expertise.
> 
> Does this means that you are going to merge patches from the experts without have a glance and
> reject or ignore novice's patches unconditionally?
> 
> I'm asking because I see there still have a lot of other panel drivers use?of_device_get_match_data()
> function to get a match, and most of them has the 'OF' guard. However, in theory, panel should be
> able to use on any CPU architecture if necessary. Does the remains has the similar issue? or Do we
> need to fixed them together?
> 
> $ find . -name "*.c" -type f | xargs grep "of_device_get_match_data"

$ git log --oneline --no-merges --grep device_get_match_data --author="Rob Herring"

So what does this prove?

> > Anyway since the rant is finished I'll land the patches.
> 
> It's just *comments* or *remarks*, there really no need to use the 'rant'
> to insult and/or devalue other peoples, as it make no sense.

P.S.
You really need to study a kernel code a bit more before replying with long messages.
It will help everybody, I believe.

-- 
With Best Regards,
Andy Shevchenko