Unverified Commit b931a976 authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
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!11866 v2 drm/amd/display: Ensure index calculation will not overflow 

Merge Pull Request from: @ci-robot 
 
PR sync from: Tong Tiangen <tongtiangen@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/UXM4PBDAPD6734PG3CUTGVP6HOB4TXF4/ 
 
https://gitee.com/src-openeuler/kernel/issues/IARV8L 
 
Link:https://gitee.com/openeuler/kernel/pulls/11866

 

Reviewed-by: default avatarYang Yingliang <yangyingliang@huawei.com>
Signed-off-by: default avatarYang Yingliang <yangyingliang@huawei.com>
parents cb7f2945 6986ea9c

drivers/gpu/drm/amd/display/dc/calcs/dcn_calcs.c

+3 −4
Original line number Diff line number Diff line
@@ -1498,10 +1498,9 @@ void dcn_bw_update_from_pplib(struct dc *dc) 
		ASSERT(fclks.num_levels);



		vmin0p65_idx = 0;

		vmid0p72_idx = fclks.num_levels -

			(fclks.num_levels > 2 ? 3 : (fclks.num_levels > 1 ? 2 : 1));

		vnom0p8_idx = fclks.num_levels - (fclks.num_levels > 1 ? 2 : 1);

		vmax0p9_idx = fclks.num_levels - 1;

		vmid0p72_idx = fclks.num_levels > 2 ? fclks.num_levels - 3 : 0;

		vnom0p8_idx = fclks.num_levels > 1 ? fclks.num_levels - 2 : 0;

		vmax0p9_idx = fclks.num_levels > 0 ? fclks.num_levels - 1 : 0;



		dc->dcn_soc->fabric_and_dram_bandwidth_vmin0p65 =

			32 * (fclks.data[vmin0p65_idx].clocks_in_khz / 1000.0) / 1000.0;