From: Jun Lei <[email protected]> [why] Previous workaround to prevent a vsync flip to be converted to immediate flip is no longer needed, and is risky because there are cases where it can result in infinite loop.
[how] Remove wait loop (which is potentially infinite) before locking pipe Signed-off-by: Jun Lei <[email protected]> Reviewed-by: Charlene Liu <[email protected]> Reviewed-by: Eric Yang <[email protected]> Acked-by: Bhawanpreet Lakha <[email protected]> --- drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c | 11 ----------- 1 file changed, 11 deletions(-) diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c index fb7a244eafca..69d600183db8 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c +++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c @@ -1107,17 +1107,6 @@ void dcn20_pipe_control_lock( if (pipe->plane_state != NULL) flip_immediate = pipe->plane_state->flip_immediate; - if (flip_immediate && lock) { - while (pipe->plane_res.hubp->funcs->hubp_is_flip_pending(pipe->plane_res.hubp)) { - udelay(1); - } - - if (pipe->bottom_pipe != NULL) - while (pipe->bottom_pipe->plane_res.hubp->funcs->hubp_is_flip_pending(pipe->bottom_pipe->plane_res.hubp)) { - udelay(1); - } - } - /* In flip immediate and pipe splitting case, we need to use GSL * for synchronization. Only do setup on locking and on flip type change. */ -- 2.17.1 _______________________________________________ amd-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/amd-gfx
