From: Michel Dänzer <michel.daen...@amd.com>
When disabling TearFree, drmmode_crtc->scanout_id could remain as 1,
but drmmode_set_mode_major would destroy drmmode_crtc->scanout[1], so
scanout_do_update() would keep bailing, and the scanout buffer would
stop being updated.
Fixes freeze after disabling TearFree on a CRTC with active RandR
rotation or other transform.
(Ported from amdgpu commit 7db0c8e9d7586cff4312d4b93684d35de3e6376f)
Signed-off-by: Michel Dänzer <michel.daen...@amd.com>
---
src/drmmode_display.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/src/drmmode_display.c b/src/drmmode_display.c
index fce8723e8..df8ef3202 100644
--- a/src/drmmode_display.c
+++ b/src/drmmode_display.c
@@ -885,6 +885,8 @@ drmmode_set_mode_major(xf86CrtcPtr crtc, DisplayModePtr
mode,
drmmode_crtc_update_tear_free(crtc);
if (drmmode_crtc->tear_free)
scanout_id = drmmode_crtc->scanout_id;
+ else
+ drmmode_crtc->scanout_id = 0;
drmmode_crtc_gamma_do_set(crtc, crtc->gamma_red,
crtc->gamma_green,
crtc->gamma_blue, crtc->gamma_size);
--
2.18.0
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