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

[Daniel Vetter]

On Mon, May 11, 2015 at 10:00:37PM -0600, Paul Walmsley wrote:
> Hi folks
> 
> 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

Any stuck task warnings or similar? Does lockdep catch something?
-Daniel

> 
> 
> 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?
> 
> 
> - Paul
> 
> 
> commit 672cb1d6aec7da2799afd1b529d5136d84ed2561
> Author: Daniel Stone <daniels at collabora.com>
> Date:   Mon Apr 20 19:22:55 2015 +0100
> 
>     drm: Add reference counting to blob properties
> 
>     Reference-count drm_property_blob objects, changing the API to
>     ref/unref.
> 
>     Signed-off-by: Daniel Stone <daniels at collabora.com>
>     Reviewed-by: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
>     Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch>
> 
> 
> --
> nvpublic

-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch