diff options
| author | Michel Dänzer <michel.daenzer@amd.com> | 2018-07-10 18:57:49 +0200 |
|---|---|---|
| committer | Michel Dänzer <michel@daenzer.net> | 2018-07-12 18:08:19 +0200 |
| commit | cf8bc72e3473cef2b511e2c938eb00aca82de909 (patch) | |
| tree | 3c31d96050787a62ccadfc7f3a4bd057ba775ef7 /src/drmmode_display.c | |
| parent | f01d8cf2bd9681b8f5f0e2eddec0a79614389771 (diff) | |
Wait for pending flips in drmmode_output_set_tear_free
This prevents a nested call to drmHandleEvent, which would hang.
Fixes hangs when disabling TearFree on a CRTC while a DRI3 client is
page flipping.
(Ported from amdgpu commit 04947b83cce3a7782e59dece2c7797cc396c1e05)
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'src/drmmode_display.c')
| -rw-r--r-- | src/drmmode_display.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/drmmode_display.c b/src/drmmode_display.c index ae605eda..003fe51e 100644 --- a/src/drmmode_display.c +++ b/src/drmmode_display.c @@ -1754,6 +1754,14 @@ drmmode_output_set_tear_free(RADEONEntPtr pRADEONEnt, drmmode_output->tear_free = tear_free; if (crtc) { + drmmode_crtc_private_ptr drmmode_crtc = crtc->driver_private; + + /* Wait for pending flips before drmmode_set_mode_major calls + * drmmode_crtc_update_tear_free, to prevent a nested + * drmHandleEvent call, which would hang + */ + drmmode_crtc_wait_pending_event(drmmode_crtc, pRADEONEnt->fd, + drmmode_crtc->flip_pending); drmmode_set_mode_major(crtc, &crtc->mode, crtc->rotation, crtc->x, crtc->y); } |