From: Martin Tsai <martin.tsai@xxxxxxx> [why] The rapid msleep operation causes the white line garbage when DAL check flip pending status in SetVidPnSourceVisibility. To execute this msleep will induce context switch, and longer delay could cause worse garbage situation. [how] To replace msleep with udelay. Signed-off-by: Martin Tsai <martin.tsai@xxxxxxx> Reviewed-by: Tony Cheng <Tony.Cheng@xxxxxxx> Acked-by: Harry Wentland <harry.wentland@xxxxxxx> Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@xxxxxxx> --- drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c | 4 ++-- 1 file changed, 2 insertions(+), 2 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 89920924a154..0dc652e76848 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c +++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c @@ -1642,9 +1642,9 @@ void dcn20_program_front_end_for_ctx( struct hubp *hubp = pipe->plane_res.hubp; int j = 0; - for (j = 0; j < TIMEOUT_FOR_PIPE_ENABLE_MS + for (j = 0; j < TIMEOUT_FOR_PIPE_ENABLE_MS*1000 && hubp->funcs->hubp_is_flip_pending(hubp); j++) - msleep(1); + udelay(1); } } -- 2.24.1 _______________________________________________ amd-gfx mailing list amd-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/amd-gfx
