DRM_SYSCTL_PRINT fails and has not the lock #170
Merged
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fix 'mutex_unlock() system panic' when DRM_SYSCTL_PRINT fails and has not the lock,
reproduced by:
% sysctl -B 1 hw.dri.0.vblank
% sysctl -B 1 hw.dri
% sysctl -B 1 -a