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From: Geert Uytterhoeven <geert@linux-m68k.org>
Date: Mon, 19 Feb 2024 11:59:35 +0100
Message-ID: <CAMuHMdVon3mdivZQ0O6D4+va0nGBrUQbDp23bEq661QD=4t7+g@mail.gmail.com>
Subject: Re: [PATCH v2 2/3] driver core: fw_devlink: Improve detection of
 overlapping cycles
To: Saravana Kannan <saravanak@google.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>, "Rafael J. Wysocki" <rafael@kernel.org>, 
	Xu Yang <xu.yang_2@nxp.com>, kernel-team@android.com, linux-kernel@vger.kernel.org, 
	Linux-Renesas <linux-renesas-soc@vger.kernel.org>
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Hi Saravana,

On Fri, Feb 2, 2024 at 10:57=E2=80=AFAM Saravana Kannan <saravanak@google.c=
om> wrote:
> fw_devlink can detect most overlapping/intersecting cycles. However it wa=
s
> missing a few corner cases because of an incorrect optimization logic tha=
t
> tries to avoid repeating cycle detection for devices that are already
> marked as part of a cycle.

Nice (I assume it's due to this patch ;-), with v6.8-rc5 I see much fewer
dependency cycle messages.

E.g. on Salvator-XS:

-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

-i2c 2-0010: Fixed dependency cycle(s) with
/soc/sound@ec500000/ports/port@0/endpoint
-i2c 2-0010: Fixed dependency cycle(s) with /soc/sound@ec500000

-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

FTR, the only remaining ones (on Salvator-XS) are:

    platform soc: Fixed dependency cycle(s) with
/soc/interrupt-controller@f1010000
    platform e6060000.pinctrl: Fixed dependency cycle(s) with
/soc/pinctrl@e6060000/scif_clk

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