Dhinakaran Pandiyan <dhinakaran.pandi...@intel.com> writes: > Now that drm_vblank_count() returns all bits of the vblank count, update > drm_crtc_arm_vblank_event() so that it queues the correct sequence. > Otherwise, this leads to prolonged waits for a vblank sequence when the > current count is >=2^32.
The summary for this patch is incorrect; the function being fixed is drm_crtc_accurate_vblank_event. And, I'm afraid you've uncovered a rabbit hole here -- there are a couple of users of this function outside of the core, including i915 in a couple of places and nouveau. We should at least review the whole call graph starting here and make sure it does what we think it should. Thanks for finding these bugs! -- -keith
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