Unverified Commit 91ed4778 authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
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!12255 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/WE4IFWIPP7E2LT22NUVY4IKM6FHC5ZJY/ 
 
https://gitee.com/src-openeuler/kernel/issues/IARV8L 
 
Link:https://gitee.com/openeuler/kernel/pulls/12255

 

Reviewed-by: default avatarXie XiuQi <xiexiuqi@huawei.com>
Signed-off-by: default avatarZhang Peng <zhangpeng362@huawei.com>
parents ac905ba3 9d9d0e24

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

+3 −4
Original line number Diff line number Diff line
@@ -1453,10 +1453,9 @@ void dcn_bw_update_from_pplib_fclks( 
	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;