backend/drm: restore pending page-flip check when tearing (!4363) · Merge requests · wlroots / wlroots · GitLab

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Simon Ser requested to merge emersion/wlroots:tearing-pending into master Oct 02, 2023

DRM_MODE_PAGE_FLIP_ASYNC doesn't allow user-space to submit new buffers before waiting for the uevent: the kernel will return EBUSY in that case.

Fixes: c2aa7fd9 ("backend/drm: Add async page flip support to legacy")