[PATCH] drm/amd/display: use udelay rather than fsleep

[Alex Deucher]

This function can be called from an atomic context so we can't use
fsleep().

Fixes: 01f60348d8fb ("drm/amd/display: Fix 'failed to blank crtc!'")
Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/4549
Cc: Wen Chen <wen.ch...@amd.com>
Cc: Fangzhi Zuo <jerry....@amd.com>
Cc: Nicholas Kazlauskas <nicholas.kazlaus...@amd.com>
Cc: Harry Wentland <harry.wentl...@amd.com>
Signed-off-by: Alex Deucher <alexander.deuc...@amd.com>
---
 drivers/gpu/drm/amd/display/dc/hwss/dcn20/dcn20_hwseq.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/dc/hwss/dcn20/dcn20_hwseq.c 
b/drivers/gpu/drm/amd/display/dc/hwss/dcn20/dcn20_hwseq.c
index 7d24fa1517bf1..cc377fcda6ff9 100644
--- a/drivers/gpu/drm/amd/display/dc/hwss/dcn20/dcn20_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/hwss/dcn20/dcn20_hwseq.c
@@ -955,7 +955,7 @@ enum dc_status dcn20_enable_stream_timing(
                return DC_ERROR_UNEXPECTED;
        }
 
-       fsleep(stream->timing.v_total * (stream->timing.h_total * 10000u / 
stream->timing.pix_clk_100hz));
+       udelay(stream->timing.v_total * (stream->timing.h_total * 10000u / 
stream->timing.pix_clk_100hz));
 
        params.vertical_total_min = stream->adjust.v_total_min;
        params.vertical_total_max = stream->adjust.v_total_max;
-- 
2.51.0