linux-kernel - Re: 6.1.y Regression found on AM3517

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Date:   Tue, 5 Sep 2023 07:31:09 +0700
From:   Bagas Sanjaya <bagasdotme@...il.com>
To:     Adam Ford <aford173@...il.com>,
        Linux OMAP <linux-omap@...r.kernel.org>,
        Saravana Kannan <saravanak@...gle.com>
Cc:     Linux Stable <stable@...r.kernel.org>,
        Tony Lindgren <tony@...mide.com>,
        Linux Regressions <regressions@...ts.linux.dev>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: 6.1.y Regression found on AM3517

On Mon, Sep 04, 2023 at 11:37:46AM -0500, Adam Ford wrote:
> I have an AM3517-EVM board that I am trying to use the latest 6.1.y
> stable, currently 6.1.51.
> 
> With git bisect, I narrowed the regression between 6.1.15 and 6.1.16 to commit
> eaf9b5612a47 ("driver core: fw_devlink: Don't purge child fwnode's
> consumer links")
> 
> In the regression, 48002000.scm appears as not ready.  This affects a
> variety of dependent peripherals making them unavailable:
> 
> wl12xx_buf platform: supplier 48002000.scm not ready
> wl12xx_vmmc2 platform: supplier wl12xx_buf not ready
> 48050000.dss platform: supplier display@0 not ready
> 48064800.ehci platform: supplier hsusb1_phy not ready
> backlight platform: supplier 48002000.scm not ready
> display@0 platform: supplier backlight not ready
> dmtimer-pwm@11 platform: supplier 48002000.scm not ready
> hsusb1_phy platform: supplier 48002000.scm not ready
> gpio-leds platform: supplier 48002000.scm not ready
> 480b4000.mmc platform: supplier wl12xx_vmmc2 not ready
> 
> If I build 6.1.51 but I checkout drivers/base/core.c from commit
> 2455b81afe68 ("driver core: fw_devlink: Add DL_FLAG_CYCLE support to
> device links"),
> the regression is gone.
> 
> I checked the 6.5 kernel, and it appears fine, so I think there is a
> possible backport commit missing, and I was hoping Saravana or Tony
> might have a suggestion as to which one(s) I should try.  I don't know
> if this is found on other OMAP3 boards, but I wouldn't be surprised.
> 

Thanks for the regression report. I'm adding it to regzbot as stable-specific
entry:

#regzbot ^introduced: eaf9b5612a47f0
#regzbot title: keeping consumer links of child fwnode doesn't prepare AM3517-EVM suppliers

-- 
An old man doll... just what I always wanted! - Clara

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