From: Fangzhi Zuo Date: Wed, 2 Oct 2024 19:47:10 +0000 (-0400) Subject: drm/amd/display: Add a Precise Delay Routine X-Git-Tag: v6.13-rc1~122^2~15^2~33 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=6c5bb04858105f3ad346bf4af5617ae6c9ea0085;p=thirdparty%2Fkernel%2Flinux.git 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 --- 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__,