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From: Geert Uytterhoeven <geert@linux-m68k.org>
Date: Thu, 29 Feb 2024 11:11:39 +0100
Message-ID: <CAMuHMdWhm1WaX3X3P7tyB+e-rX=iwkwm8LxE3=gfHzJ1umhsFg@mail.gmail.com>
Subject: Re: [PATCH] of: property: fw_devlink: Fix stupid bug in
 remote-endpoint parsing
To: Saravana Kannan <saravanak@google.com>
Cc: Rob Herring <robh+dt@kernel.org>, Frank Rowand <frowand.list@gmail.com>, 
	=?UTF-8?Q?Herv=C3=A9_Codina?= <herve.codina@bootlin.com>, 
	Luca Ceresoli <luca.ceresoli@bootlin.com>, kernel-team@android.com, 
	Rob Herring <robh@kernel.org>, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org
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Hi Saravana,

On Sat, Feb 24, 2024 at 6:25=E2=80=AFAM Saravana Kannan <saravanak@google.c=
om> wrote:
> Introduced a stupid bug in commit 782bfd03c3ae ("of: property: Improve
> finding the supplier of a remote-endpoint property") due to a last minute
> incorrect edit of "index !=3D0" into "!index". This patch fixes it to be
> "index > 0" to match the comment right next to it.
>
> Reported-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
> Link: https://lore.kernel.org/lkml/20240223171849.10f9901d@booty/
> Fixes: 782bfd03c3ae ("of: property: Improve finding the supplier of a rem=
ote-endpoint property")
> Signed-off-by: Saravana Kannan <saravanak@google.com>

Thanks for your patch!

> --- a/drivers/of/property.c
> +++ b/drivers/of/property.c
> @@ -1304,7 +1304,7 @@ static struct device_node *parse_remote_endpoint(st=
ruct device_node *np,
>                                                  int index)
>  {
>         /* Return NULL for index > 0 to signify end of remote-endpoints. =
*/
> -       if (!index || strcmp(prop_name, "remote-endpoint"))
> +       if (index > 0 || strcmp(prop_name, "remote-endpoint"))
>                 return NULL;
>
>         return of_graph_get_remote_port_parent(np);
> --
> 2.44.0.rc0.258.g7320e95886-goog

After this, the "Fixed dependency cycle" messages I reported to be
gone in [1] are back.

In fact, they are slightly different, and there are now even more of them:

-platform fea80000.csi2: Fixed dependency cycle(s) with
/soc/video@e6ef7000/ports/port@1/endpoint@0
-platform fea80000.csi2: Fixed dependency cycle(s) with
/soc/video@e6ef6000/ports/port@1/endpoint@0
-platform fea80000.csi2: Fixed dependency cycle(s) with
/soc/video@e6ef5000/ports/port@1/endpoint@0
-platform fea80000.csi2: Fixed dependency cycle(s) with
/soc/video@e6ef4000/ports/port@1/endpoint@0
-platform fea80000.csi2: Fixed dependency cycle(s) with
/soc/video@e6ef3000/ports/port@1/endpoint@0
-platform fea80000.csi2: Fixed dependency cycle(s) with
/soc/video@e6ef2000/ports/port@1/endpoint@0
-platform fea80000.csi2: Fixed dependency cycle(s) with
/soc/video@e6ef1000/ports/port@1/endpoint@0
-platform fea80000.csi2: Fixed dependency cycle(s) with
/soc/video@e6ef0000/ports/port@1/endpoint@0
-platform feaa0000.csi2: Fixed dependency cycle(s) with
/soc/video@e6ef3000/ports/port@1/endpoint@2
-platform feaa0000.csi2: Fixed dependency cycle(s) with
/soc/video@e6ef2000/ports/port@1/endpoint@2
-platform feaa0000.csi2: Fixed dependency cycle(s) with
/soc/video@e6ef1000/ports/port@1/endpoint@2
-platform feaa0000.csi2: Fixed dependency cycle(s) with
/soc/video@e6ef0000/ports/port@1/endpoint@2
-platform fead0000.hdmi: Fixed dependency cycle(s) with
/soc/sound@ec500000/ports/port@1/endpoint
-platform feae0000.hdmi: Fixed dependency cycle(s) with
/soc/sound@ec500000/ports/port@2/endpoint
-platform feb00000.display: Fixed dependency cycle(s) with
/soc/hdmi@feae0000/ports/port@0/endpoint
-platform feb00000.display: Fixed dependency cycle(s) with
/soc/hdmi@fead0000/ports/port@0/endpoint
-platform hdmi0-out: Fixed dependency cycle(s) with
/soc/hdmi@fead0000/ports/port@1/endpoint
-platform hdmi1-out: Fixed dependency cycle(s) with
/soc/hdmi@feae0000/ports/port@1/endpoint
-platform vga-encoder: Fixed dependency cycle(s) with /vga/port/endpoint
-platform vga-encoder: Fixed dependency cycle(s) with
/soc/display@feb00000/ports/port@0/endpoint
+platform e6ef0000.video: Fixed dependency cycle(s) with /soc/csi2@feaa0000
+platform e6ef0000.video: Fixed dependency cycle(s) with /soc/csi2@fea80000
+platform e6ef1000.video: Fixed dependency cycle(s) with /soc/csi2@feaa0000
+platform e6ef1000.video: Fixed dependency cycle(s) with /soc/csi2@fea80000
+platform e6ef2000.video: Fixed dependency cycle(s) with /soc/csi2@feaa0000
+platform e6ef2000.video: Fixed dependency cycle(s) with /soc/csi2@fea80000
+platform e6ef3000.video: Fixed dependency cycle(s) with /soc/csi2@feaa0000
+platform e6ef3000.video: Fixed dependency cycle(s) with /soc/csi2@fea80000
+platform e6ef4000.video: Fixed dependency cycle(s) with /soc/csi2@fea80000
+platform e6ef5000.video: Fixed dependency cycle(s) with /soc/csi2@fea80000
+platform e6ef6000.video: Fixed dependency cycle(s) with /soc/csi2@fea80000
+platform e6ef7000.video: Fixed dependency cycle(s) with /soc/csi2@fea80000
+platform ec500000.sound: Fixed dependency cycle(s) with /soc/hdmi@feae0000
+platform ec500000.sound: Fixed dependency cycle(s) with /soc/hdmi@fead0000
+platform ec500000.sound: Fixed dependency cycle(s) with
/soc/i2c@e6510000/codec@10
+platform e6ef7000.video: Fixed dependency cycle(s) with /soc/csi2@fea80000
+platform e6ef6000.video: Fixed dependency cycle(s) with /soc/csi2@fea80000
+platform e6ef5000.video: Fixed dependency cycle(s) with /soc/csi2@fea80000
+platform e6ef4000.video: Fixed dependency cycle(s) with /soc/csi2@fea80000
+platform e6ef3000.video: Fixed dependency cycle(s) with /soc/csi2@fea80000
+platform e6ef2000.video: Fixed dependency cycle(s) with /soc/csi2@fea80000
+platform e6ef1000.video: Fixed dependency cycle(s) with /soc/csi2@fea80000
+platform e6ef0000.video: Fixed dependency cycle(s) with /soc/csi2@fea80000
+platform fea80000.csi2: Fixed dependency cycle(s) with /soc/video@e6ef7000
+platform fea80000.csi2: Fixed dependency cycle(s) with /soc/video@e6ef6000
+platform fea80000.csi2: Fixed dependency cycle(s) with /soc/video@e6ef5000
+platform fea80000.csi2: Fixed dependency cycle(s) with /soc/video@e6ef4000
+platform fea80000.csi2: Fixed dependency cycle(s) with /soc/video@e6ef3000
+platform fea80000.csi2: Fixed dependency cycle(s) with /soc/video@e6ef2000
+platform fea80000.csi2: Fixed dependency cycle(s) with /soc/video@e6ef1000
+platform fea80000.csi2: Fixed dependency cycle(s) with /soc/video@e6ef0000
+platform fea80000.csi2: Fixed dependency cycle(s) with
/soc/i2c@e66d8000/video-receiver@70
+platform e6ef3000.video: Fixed dependency cycle(s) with /soc/csi2@feaa0000
+platform e6ef2000.video: Fixed dependency cycle(s) with /soc/csi2@feaa0000
+platform e6ef1000.video: Fixed dependency cycle(s) with /soc/csi2@feaa0000
+platform e6ef0000.video: Fixed dependency cycle(s) with /soc/csi2@feaa0000
+platform feaa0000.csi2: Fixed dependency cycle(s) with /soc/video@e6ef3000
+platform feaa0000.csi2: Fixed dependency cycle(s) with /soc/video@e6ef2000
+platform feaa0000.csi2: Fixed dependency cycle(s) with /soc/video@e6ef1000
+platform feaa0000.csi2: Fixed dependency cycle(s) with /soc/video@e6ef0000
+platform feaa0000.csi2: Fixed dependency cycle(s) with
/soc/i2c@e66d8000/video-receiver@70
+platform ec500000.sound: Fixed dependency cycle(s) with /soc/hdmi@fead0000
+platform fead0000.hdmi: Fixed dependency cycle(s) with /soc/sound@ec500000
+platform fead0000.hdmi: Fixed dependency cycle(s) with /soc/display@feb000=
00
+platform ec500000.sound: Fixed dependency cycle(s) with /soc/hdmi@feae0000
+platform feae0000.hdmi: Fixed dependency cycle(s) with /soc/sound@ec500000
+platform feae0000.hdmi: Fixed dependency cycle(s) with /soc/display@feb000=
00
+platform feae0000.hdmi: Fixed dependency cycle(s) with /soc/display@feb000=
00
+platform fead0000.hdmi: Fixed dependency cycle(s) with /soc/display@feb000=
00
+platform feb00000.display: Fixed dependency cycle(s) with /soc/hdmi@feae00=
00
+platform feb00000.display: Fixed dependency cycle(s) with /soc/hdmi@fead00=
00
+platform cvbs-in: Fixed dependency cycle(s) with
/soc/i2c@e66d8000/video-receiver@70
+platform hdmi-in: Fixed dependency cycle(s) with
/soc/i2c@e66d8000/video-receiver@70
+platform fead0000.hdmi: Fixed dependency cycle(s) with /hdmi0-out
+platform hdmi0-out: Fixed dependency cycle(s) with /soc/hdmi@fead0000
+platform feae0000.hdmi: Fixed dependency cycle(s) with /hdmi1-out
+platform hdmi1-out: Fixed dependency cycle(s) with /soc/hdmi@feae0000
+platform vga: Fixed dependency cycle(s) with /vga-encoder
+platform feb00000.display: Fixed dependency cycle(s) with /vga-encoder
+platform vga-encoder: Fixed dependency cycle(s) with /vga
+platform vga-encoder: Fixed dependency cycle(s) with /soc/display@feb00000

-i2c 2-0010: Fixed dependency cycle(s) with
/soc/sound@ec500000/ports/port@0/endpoint
+platform ec500000.sound: Fixed dependency cycle(s) with
/soc/i2c@e6510000/codec@10

-i2c 4-0070: Fixed dependency cycle(s) with
/soc/csi2@fea80000/ports/port@0/endpoint
-i2c 4-0070: Fixed dependency cycle(s) with
/soc/csi2@feaa0000/ports/port@0/endpoint
-i2c 4-0070: Fixed dependency cycle(s) with /hdmi-in/port/endpoint
-i2c 4-0070: Fixed dependency cycle(s) with /cvbs-in/port/endpoint
+platform feaa0000.csi2: Fixed dependency cycle(s) with
/soc/i2c@e66d8000/video-receiver@70
+platform fea80000.csi2: Fixed dependency cycle(s) with
/soc/i2c@e66d8000/video-receiver@70
+i2c 4-0070: Fixed dependency cycle(s) with /soc/csi2@fea80000
+i2c 4-0070: Fixed dependency cycle(s) with /soc/csi2@feaa0000

I guess all of that is expected?

[1] https://lore.kernel.org/all/CAMuHMdVon3mdivZQ0O6D4+va0nGBrUQbDp23bEq661=
QD=3D4t7+g@mail.gmail.com/

Gr{oetje,eeting}s,

                        Geert

--=20
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k=
org

In personal conversations with technical people, I call myself a hacker. Bu=
t
when I'm talking to journalists I just say "programmer" or something like t=
hat.
                                -- Linus Torvalds