Unverified Commit dad1b923 authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
Browse files

!10933 drm/amd/display: Check index msg_id before read or write 

Merge Pull Request from: @ci-robot 
 
PR sync from: Li Nan <linan122@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/HOE7URQTLK3TEOM7MKLTV5P352QVP4TG/ 
 
https://gitee.com/src-openeuler/kernel/issues/IAGSSE 
 
Link:https://gitee.com/openeuler/kernel/pulls/10933

 

Reviewed-by: default avatarYang Yingliang <yangyingliang@huawei.com>
Reviewed-by: default avatarYu Kuai <yukuai3@huawei.com>
Signed-off-by: default avatarYang Yingliang <yangyingliang@huawei.com>
parents 457a445d 9e499b42

drivers/gpu/drm/amd/display/modules/hdcp/hdcp_ddc.c

+8 −0
Original line number Diff line number Diff line
@@ -156,6 +156,10 @@ static enum mod_hdcp_status read(struct mod_hdcp *hdcp, 
	uint32_t cur_size = 0;

	uint32_t data_offset = 0;



	if (msg_id == MOD_HDCP_MESSAGE_ID_INVALID) {

		return MOD_HDCP_STATUS_DDC_FAILURE;

	}



	if (is_dp_hdcp(hdcp)) {

		while (buf_len > 0) {

			cur_size = MIN(buf_len, HDCP_MAX_AUX_TRANSACTION_SIZE);
@@ -215,6 +219,10 @@ static enum mod_hdcp_status write(struct mod_hdcp *hdcp, 
	uint32_t cur_size = 0;

	uint32_t data_offset = 0;



	if (msg_id == MOD_HDCP_MESSAGE_ID_INVALID) {

		return MOD_HDCP_STATUS_DDC_FAILURE;

	}



	if (is_dp_hdcp(hdcp)) {

		while (buf_len > 0) {

			cur_size = MIN(buf_len, HDCP_MAX_AUX_TRANSACTION_SIZE);