Unverified Commit 1a021e04 authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
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!12074 drm/amd/display: Check index for aux_rd_interval before using 

Merge Pull Request from: @ci-robot 
 
PR sync from: Qi Xi <xiqi2@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/AWYIDHMJU65HZJAWUMSNTC3BJRFCQ3VR/ 
 
https://gitee.com/src-openeuler/kernel/issues/IARV7O 
 
Link:https://gitee.com/openeuler/kernel/pulls/12074

 

Reviewed-by: default avatarXie XiuQi <xiexiuqi@huawei.com>
Signed-off-by: default avatarZhang Peng <zhangpeng362@huawei.com>
parents 5d76abff e5a9ec6b

drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_training.c

+2 −2
Original line number Diff line number Diff line
@@ -914,10 +914,10 @@ static enum dc_status configure_lttpr_mode_non_transparent( 
			/* Driver does not need to train the first hop. Skip DPCD read and clear

			 * AUX_RD_INTERVAL for DPTX-to-DPIA hop.

			 */

			if (link->ep_type == DISPLAY_ENDPOINT_USB4_DPIA)

			if (link->ep_type == DISPLAY_ENDPOINT_USB4_DPIA && repeater_cnt > 0 && repeater_cnt < MAX_REPEATER_CNT)

				link->dpcd_caps.lttpr_caps.aux_rd_interval[--repeater_cnt] = 0;



			for (repeater_id = repeater_cnt; repeater_id > 0; repeater_id--) {

			for (repeater_id = repeater_cnt; repeater_id > 0 && repeater_id < MAX_REPEATER_CNT; repeater_id--) {

				aux_interval_address = DP_TRAINING_AUX_RD_INTERVAL_PHY_REPEATER1 +

						((DP_REPEATER_CONFIGURATION_AND_STATUS_SIZE) * (repeater_id - 1));

				core_link_read_dpcd(