From 6c5bb04858105f3ad346bf4af5617ae6c9ea0085 Mon Sep 17 00:00:00 2001 From: Fangzhi Zuo Date: Wed, 2 Oct 2024 15:47:10 -0400 Subject: [PATCH] drm/amd/display: Add a Precise Delay Routine Fix DP compliance failures 4.2.2.12, 4.3.1.21, 4.9.1.19 caused by imprecise delay on fsleep(). Reviewed-by: Aric Cyr Signed-off-by: Fangzhi Zuo Signed-off-by: Wayne Lin Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher --- .../gpu/drm/amd/display/dc/link/protocols/link_dp_training.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_training.c b/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_training.c index a42c56a572530..754c895e1bfbd 100644 --- a/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_training.c +++ b/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_training.c @@ -272,7 +272,7 @@ void dp_wait_for_training_aux_rd_interval( struct dc_link *link, uint32_t wait_in_micro_secs) { - fsleep(wait_in_micro_secs); + usleep_range_state(wait_in_micro_secs, wait_in_micro_secs, TASK_UNINTERRUPTIBLE); DC_LOG_HW_LINK_TRAINING("%s:\n wait = %d\n", __func__, -- 2.47.2