Commit 1e819610 authored by Marijn Suijten's avatar Marijn Suijten Committed by Dmitry Baryshkov
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drm/msm/dsi: Use DIV_ROUND_UP instead of conditional increment on modulo 



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: b9080324 ("drm/msm/dsi: add support for dsc data")
Reviewed-by: default avatarAbhinav Kumar <quic_abhinavk@quicinc.com>
Reviewed-by: default avatarDmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: default avatarMarijn Suijten <marijn.suijten@somainline.org>
Patchwork: https://patchwork.freedesktop.org/patch/508935/
Link: https://lore.kernel.org/r/20221026182824.876933-4-marijn.suijten@somainline.org


Signed-off-by: default avatarDmitry Baryshkov <dmitry.baryshkov@linaro.org>
parent 170ffca8

drivers/gpu/drm/msm/dsi/dsi_host.c

+1 −3
Original line number Diff line number Diff line
@@ -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 +