Re: s2idle blocked on dev->power.completion

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On Fri, 7 Feb 2025 at 16:08, Geert Uytterhoeven <geert@xxxxxxxxxxxxxx> wrote:
> Instrumenting all dev->power.completion accesses in
> drivers/base/power/main.c reveals that resume is blocked in dpm_wait()
> in the call to wait_for_completion() for regulator-1p2v, which is
> indeed a dependency for the SN65DSI86 DSI-DP bridge.  Comparing

[...]

> Looking at /sys/devices/virtual/devlink, the non-working case has the
> following extra entries:

Note that the SN65DSI86 DSI-DP bridge driver uses the auxiliary bus
to create four subdevices:
  - ti_sn65dsi86.aux.0,
  - ti_sn65dsi86.bridge.0,
  - ti_sn65dsi86.gpio.0,
  - ti_sn65dsi86.pwm.0.
None of them have supplier:* symlinks in sysfs, so perhaps that is
the root cause of the issue?

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds




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