"drm: Add reference counting to blob properties" breaks Tegra124 Jetson TK1 in linux-next

[Daniel Stone]

Hi Paul,

On 12 May 2015 at 05:00, Paul Walmsley <pwalmsley at nvidia.com> wrote:
> Tegra124 Jetson TK1 hangs during boot in next-20150508 and beyond:
>
> http://nvt.pwsan.com/experimental/linux-next/testlogs/test_next-20150508/20150508101018/boot/tegra124-jetson-tk1/tegra124-jetson-tk1/tegra_defconfig_log.txt
> http://nvt.pwsan.com/experimental/linux-next/testlogs/test_next-20150511/20150511004533/boot/tegra124-jetson-tk1/tegra124-jetson-tk1/tegra_defconfig_log.txt
>
> Reverting commit 672cb1d6aec7da2799afd1b529d5136d84ed2561 ("drm: Add
> reference counting to blob properties") gets it booting again:
>
> http://nvt.pwsan.com/pub/pwalmsley-tester/testlogs/test_20150511204703_3838232431c2636ff539f2354c630c0ca3d4b7ad/20150511204703/boot/tegra124-jetson-tk1/tegra124-jetson-tk1/tegra_defconfig_log.txt
>
> I'm not a DRM expert but maybe one of you knows what's going on here?

Thierry found and fixed the rather stupid bug: not using the cached
'dev' variable in the one place it would've been useful!

http://paste.debian.net/175522/ is the fix, which has been squashed in
to the branch and should appear in -next from today.

Thanks for the report.

Cheers,
Daniel