linux-kernel - Re: [PATCH v4 1/2] dt-bindings: Pinefeat cef168 lens control board

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Message-ID: <20250830-radiant-pigeon-of-foundation-fed0ae@lemur>
Date: Sat, 30 Aug 2025 11:53:57 -0400
From: Konstantin Ryabitsev <konstantin@...uxfoundation.org>
To: Kieran Bingham <kieran.bingham@...asonboard.com>
Cc: Aliaksandr Smirnou <asmirnou@...efeat.co.uk>, 
	Krzysztof Kozlowski <krzk@...nel.org>, conor+dt@...nel.org, hverkuil@...all.nl, 
	jacopo.mondi@...asonboard.com, krzk+dt@...nel.org, mchehab@...nel.org, robh@...nel.org, 
	devicetree@...r.kernel.org, linux-media@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 1/2] dt-bindings: Pinefeat cef168 lens control board

On Sat, Aug 30, 2025 at 03:24:37PM +0100, Kieran Bingham wrote:
> > b4 diff '<20250830111500.53169-2-asmirnou@...efeat.co.uk>'
> > Grabbing thread from
> > lore.kernel.org/all/20250830111500.53169-2-asmirnou@...efeat.co.uk/t.mbox.gz
> > Checking for older revisions
> > Grabbing search results from lore.kernel.org
> > ---
> > Analyzing 9 messages in the thread
> > Could not find lower series to compare against.
> > 
> > You are not making it easier for us.
> 
> Could you explain what's required to tell b4 to know about earlier
> versions please? (Or point to the documentation?)

Oh, it's an interesting case, glad I looked into it. For one, there was a bug
in b4 that limited the lookups by wrong author (mea culpa!). However, there is
a complication here. This identical series was sent several times, with a
different From address:

    https://lore.kernel.org/all/20250830111500.53169-1-asmirnou@pinefeat.co.uk/
    https://lore.kernel.org/all/20250822171041.7340-1-support@pinefeat.co.uk/

Since this series wasn't prepared with b4, it doesn't have a change-id, and
therefore when looking for previous revisions we limit by subject and same
author. Depending on which v4 you pick from the two above, you will either
find v3 or not find a v3. :)

This command succeeds with the latest master and stable-0.14.y:

    b4 diff 20250822171041.7340-1-support@...efeat.co.uk

> I don't know ... so I don't think a first time contributor would
> implicitly know either.

I know it's an easy thing to mess up, but in general sending the same series
twice with a different From address will result in confusion.

-K