From: George Shen <george.shen@xxxxxxx> [Why/How] Theoretically rare corner case where ceil(Y) results in rounding up to an integer. If this happens, the 1 should be carried over to the X value. Reviewed-by: Wenjing Liu <wenjing.liu@xxxxxxx> Acked-by: Anson Jacob <Anson.Jacob@xxxxxxx> Signed-off-by: George Shen <george.shen@xxxxxxx> --- drivers/gpu/drm/amd/display/dc/dcn10/dcn10_stream_encoder.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_stream_encoder.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_stream_encoder.c index 687c3c6881a9..b0c08ee6bc2c 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_stream_encoder.c +++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_stream_encoder.c @@ -647,6 +647,12 @@ void enc1_stream_encoder_set_throttled_vcp_size( x), 26)); + // If y rounds up to integer, carry it over to x. + if (y >> 26) { + x += 1; + y = 0; + } + REG_SET_2(DP_MSE_RATE_CNTL, 0, DP_MSE_RATE_X, x, DP_MSE_RATE_Y, y); -- 2.25.1