From: Marijn Suijten Date: Wed, 26 Oct 2022 18:28:17 +0000 (+0200) Subject: drm/msm/dsi: Use DIV_ROUND_UP instead of conditional increment on modulo X-Git-Tag: v6.1.8~1684 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f5bf0e54c47c3bb2205ee725894df0dbc9e5ab89;p=platform%2Fkernel%2Flinux-starfive.git drm/msm/dsi: Use DIV_ROUND_UP instead of conditional increment on modulo [ Upstream commit 1e8196103bd02a396b45c8f6188541634a47fce2 ] This exact same math is used to compute bytes_in_slice above in dsi_update_dsc_timing(), also used to fill slice_chunk_size. Fixes: b9080324d6ca ("drm/msm/dsi: add support for dsc data") Reviewed-by: Abhinav Kumar Reviewed-by: Dmitry Baryshkov Signed-off-by: Marijn Suijten Patchwork: https://patchwork.freedesktop.org/patch/508935/ Link: https://lore.kernel.org/r/20221026182824.876933-4-marijn.suijten@somainline.org Signed-off-by: Dmitry Baryshkov Signed-off-by: Sasha Levin --- diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c index d948325..88c8aa5 100644 --- a/drivers/gpu/drm/msm/dsi/dsi_host.c +++ b/drivers/gpu/drm/msm/dsi/dsi_host.c @@ -1807,9 +1807,7 @@ static int dsi_populate_dsc_params(struct drm_dsc_config *dsc) * params are calculated */ groups_per_line = DIV_ROUND_UP(dsc->slice_width, 3); - dsc->slice_chunk_size = dsc->slice_width * dsc->bits_per_pixel / 8; - if ((dsc->slice_width * dsc->bits_per_pixel) % 8) - dsc->slice_chunk_size++; + dsc->slice_chunk_size = DIV_ROUND_UP(dsc->slice_width * dsc->bits_per_pixel, 8); /* rbs-min */ min_rate_buffer_size = dsc->rc_model_size - dsc->initial_offset +