Please cherry-pick this commit for all stable branches from 3.2 to 4.1 inclusive:
commit 7f98ca454ad373fc1b76be804fa7138ff68c1d27 Author: Dave Airlie <airl...@redhat.com> Date: Thu Aug 20 10:13:55 2015 +1000 drm/radeon: fix hotplug race at startup It is especially important after applying: commit 39fa10f7e21574a70cecf1fed0f9b36535aa68a0 Author: Alex Deucher <alexander.deuc...@amd.com> Date: Fri May 15 11:48:52 2015 -0400 drm/radeon: take the mode_config mutex when dealing with hpds (v2) which is in all those branches. The following branches already have both of them: v3.12.48: 76c74a6e1638 drm/radeon: fix hotplug race at startup v3.18.22: e21fe65717ca drm/radeon: fix hotplug race at startup v3.16.7-ckt17: 87fdee8a92b0 drm/radeon: fix hotplug race at startup Ben. -- Ben Hutchings Life would be so much easier if we could look at the source code.
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