From: Murton Liu <murton.liu@xxxxxxx> [Why] Due to a small pre-fetch window, the active vline timing is a couple of lines off when compared to what it should be. [How] Changed the calculation for the start vline to account for this window. Signed-off-by: Murton Liu <murton.liu@xxxxxxx> Reviewed-by: Aric Cyr <Aric.Cyr@xxxxxxx> Acked-by: Leo Li <sunpeng.li@xxxxxxx> --- drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c index ad46294..5462668 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c +++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c @@ -150,7 +150,7 @@ void optc1_program_vline_interrupt( req_delta_lines--; if (req_delta_lines > vsync_line) - start_line = dc_crtc_timing->v_total - (req_delta_lines - vsync_line) - 1; + start_line = dc_crtc_timing->v_total - (req_delta_lines - vsync_line) + 2; else start_line = vsync_line - req_delta_lines; -- 2.7.4 _______________________________________________ amd-gfx mailing list amd-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/amd-gfx
