From d5ca5fdbeb76ef78af9a8291846d2c9f08ae414b Mon Sep 17 00:00:00 2001 From: Eric Yang Date: Mon, 25 Mar 2019 16:11:43 -0400 Subject: [PATCH] drm/amd/display: fix underflow on boot [Why] New seamless boot sequence introduced a bug where front end is disabled without blanking otg. [How] Adjust the condition of blanking otg to match seamless boot. Signed-off-by: Eric Yang Reviewed-by: Anthony Koo Acked-by: Leo Li Acked-by: Tony Cheng Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c index afa8648d88e1..f6591488ef9b 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c +++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c @@ -979,16 +979,14 @@ static void dcn10_init_pipes(struct dc *dc, struct dc_state *context) * to non-preferred front end. If pipe_ctx->stream is not NULL, * we will use the pipe, so don't disable */ - if (pipe_ctx->stream != NULL) + if (pipe_ctx->stream != NULL && can_apply_seamless_boot) continue; - if (tg->funcs->is_tg_enabled(tg)) - tg->funcs->lock(tg); - /* Blank controller using driver code instead of * command table. */ if (tg->funcs->is_tg_enabled(tg)) { + tg->funcs->lock(tg); tg->funcs->set_blank(tg, true); hwss_wait_for_blank_complete(tg); } -- 2.30.2