Comment # 1
on bug 98322
from Takashi Iwai
OK, I found out the culprit. It's the race of dirty update callback and the dirty clip update. The schedule_work() in drm_fb_helper_dirty() must be inside the spinlock. Otherwise the concurrent calls may conflict, one clears the clip while the another is called after that with the cleared clip area. I'll post the patch soon later.
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