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backend/drm: restore pending page-flip check when tearing

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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: c2aa7fd965 ("backend/drm: Add async page flip support to legacy")
This commit is contained in:
Simon Ser 2023-10-02 10:26:47 +02:00
parent c044aef5f0
commit a1679c92ce
1 changed files with 1 additions and 1 deletions
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2
backend/drm/drm.c
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@ -734,7 +734,7 @@ bool drm_connector_commit_state(struct wlr_drm_connector *conn,
// page-flip, either a blocking modeset. When performing a blocking modeset
// we'll wait for all queued page-flips to complete, so we don't need this
// safeguard.
if (conn->pending_page_flip_crtc && !pending.modeset && !pending.base->tearing_page_flip) {
if (conn->pending_page_flip_crtc && !pending.modeset) {
wlr_drm_conn_log(conn, WLR_ERROR, "Failed to page-flip output: "
"a page-flip is already pending");
goto out;