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Re: [GIT PULL] On-demand device probing

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On Fri, Oct 16, 2015 at 4:23 PM, Olof Johansson <olof@lixom.net> wrote:
> Hi,
>
> I've bisected boot failures in next-20151016 down to patches in this branch:
>
> On Thu, Oct 15, 2015 at 4:42 AM, Tomeu Vizoso
> <tomeu.vizoso@collabora.com> wrote:
>> Tomeu Vizoso (20):
>>       driver core: handle -EPROBE_DEFER from bus_type.match()
>
> The machine it happened on was OMAP5UEVM:
>
> http://arm-soc.lixom.net/bootlogs/next/next-20151016/omap5uevm-arm-omap2plus_defconfig.html

So this one is because the MMC node numbering changed. I don't know
how to fix that other than with aliases, but that doesn't solve
backwards compatibility.


> But I've also seen it on tegra2, that one bisected down to:
>
>>      regulator: core: Probe regulators on demand
>
> http://arm-soc.lixom.net/bootlogs/next/next-20151016/seaboard-arm-multi_v7_defconfig.html

This one you need a rootwait I think. The MMC scanning is not
guaranteed to be done before the rootfs mounting AFAIK. There may be
other problems, but we can't see them since it panics.

Rob
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[GIT PULL] On-demand device probing Tomeu Vizoso <tomeu.vizoso@collabora.com> - 2015-10-14 10:40 +0200
  Re: [GIT PULL] On-demand device probing Mark Brown <broonie@kernel.org> - 2015-10-14 11:30 +0200
    [GIT PULL] On-demand device probing Tomeu Vizoso <tomeu.vizoso@collabora.com> - 2015-10-15 13:50 +0200
      Re: [GIT PULL] On-demand device probing Olof Johansson <olof@lixom.net> - 2015-10-16 23:30 +0200
        Re: [GIT PULL] On-demand device probing Rob Herring <robh+dt@kernel.org> - 2015-10-17 17:30 +0200
  Re: [GIT PULL] On-demand device probing Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-17 09:00 +0200
    Re: [GIT PULL] On-demand device probing Rob Herring <robh+dt@kernel.org> - 2015-10-17 17:10 +0200
      Re: [GIT PULL] On-demand device probing Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-17 17:50 +0200
        Re: [GIT PULL] On-demand device probing Rob Herring <robh+dt@kernel.org> - 2015-10-17 18:30 +0200
          Re: [GIT PULL] On-demand device probing Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-17 19:00 +0200
            Re: [GIT PULL] On-demand device probing Rob Clark <robdclark@gmail.com> - 2015-10-17 20:00 +0200
              Re: [GIT PULL] On-demand device probing Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-17 20:30 +0200
                Re: [GIT PULL] On-demand device probing Rob Clark <robdclark@gmail.com> - 2015-10-17 20:50 +0200
                Re: [GIT PULL] On-demand device probing Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-17 21:00 +0200
                Re: [GIT PULL] On-demand device probing Rob Clark <robdclark@gmail.com> - 2015-10-17 21:40 +0200
                Re: [GIT PULL] On-demand device probing Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-10-17 22:30 +0200
                Re: [GIT PULL] On-demand device probing Noralf Trønnes <noralf@tronnes.org> - 2015-10-17 21:10 +0200
                Re: [GIT PULL] On-demand device probing Rob Clark <robdclark@gmail.com> - 2015-10-17 21:50 +0200

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