Re: [GIT PULL 9/9] ARM: tegra: Default configuration updates for v4.3-rc1

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Hi Theirry,

On 14 August 2015 at 07:48, Thierry Reding <thierry.reding@xxxxxxxxx> wrote:
> Hi ARM SoC maintainers,
>
> The following changes since commit d770e558e21961ad6cfdf0ff7df0eb5d7d4f0754:
>
>   Linux 4.2-rc1 (2015-07-05 11:01:52 -0700)
>
> are available in the git repository at:
>
>   git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux.git tags/tegra-for-4.3-defconfig
>
> for you to fetch changes up to 258d9bc5e77fa40e290a0bd480d5349224374480:
>
>   ARM: tegra: Update multi_v7_defconfig (2015-08-14 16:26:00 +0200)
>
> Thanks,
> Thierry
>
> ----------------------------------------------------------------
> ARM: tegra: Default configuration updates for v4.3-rc1
>
> Enable the GK20A GPU (via the Nouveau driver) and CPU frequency scaling
> on Tegra124.
>
> ----------------------------------------------------------------
> Thierry Reding (1):
>       ARM: tegra: Update multi_v7_defconfig

The kernelci.org bot recently reported jetson-tk1 boot failures[1][2]
in next-20150818, only when booting the mult_v7_defconfig kernels. I
bisected[3] these boot failure down to this commit, it didn't cleanly
revert, so I manually removed that options this patch added, and my
jetson-tk1 booted again. Digging a bit further, if I apply the patch
below to next-20150818, my jetson-tk1 boots.

diff --git a/arch/arm/configs/multi_v7_defconfig
b/arch/arm/configs/multi_v7_defconfig
index b2facab..a285afe 100644
--- a/arch/arm/configs/multi_v7_defconfig
+++ b/arch/arm/configs/multi_v7_defconfig
@@ -468,7 +468,6 @@ CONFIG_FRAMEBUFFER_CONSOLE_ROTATION=y
 CONFIG_SOUND=m
 CONFIG_SND=m
 CONFIG_SND_DYNAMIC_MINORS=y
-CONFIG_SND_HDA_TEGRA=m
 CONFIG_SND_HDA_INPUT_BEEP=y
 CONFIG_SND_HDA_PATCH_LOADER=y
 CONFIG_SND_HDA_CODEC_REALTEK=m

This isn't where the story ends unfortunately. The collabora lab also
has a jetson-tk1, booted in the same manner, which boots next-20150818
fine[4]. The only differences I can spot in the two boot logs is that
the collabora board is using an older version of u-boot, where as my
board is using a newer version. U-Boot 2015.01-00231-gab77f24-dirty
(Good) vs U-Boot 2015.07-00130-gb217c89 (Bad). I've also noticed some
angry udev messages after the modules probe in userspace present in
both boot logs that look suspicious.

[   70.469914] udevd[108]: worker [113] /devices/soc0/70030000.hda is
taking a long time
[   70.479849] udevd[108]: worker [115] /devices/soc0/70300000.ahub is
taking a long time
[   70.490769] udevd[108]: worker [117] /devices/soc0/sound is taking
a long time

FWIW, When I went searching for this patch, I couldn't find it on any
of the mailing lists. The only reference to this patch was from this
pull request, thus why I'm reporting the issue here. :)

Anyways, let me know if you can reproduce this issue, and/or can think
of a reason this might may be causing trouble.

Cheers,

Tyler

[1] http://kernelci.org/boot/all/job/next/kernel/next-20150818/
[2] http://storage.kernelci.org/next/next-20150818/arm-multi_v7_defconfig/lab-tbaker/boot-tegra124-jetson-tk1.html
[3] http://hastebin.com/bixofozaji.vhdl
[4] http://storage.kernelci.org/next/next-20150818/arm-multi_v7_defconfig/lab-collabora/boot-tegra124-jetson-tk1.html
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