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[ Upstream commit9243d70e05] DP 1.4a Section 2.8.7.1.5.6.1: A DP Source device shall retry at least seven times upon receiving AUX_DEFER before giving up the AUX transaction. The drm_dp_i2c_do_msg() function in the drm_dp_helper.c file will judge the status of the msg->reply parameter passed to aux_transfer for different processing. Fixes:f70ac097a2("drm/mediatek: Add MT8195 Embedded DisplayPort driver") Signed-off-by: Xinlei Lee <xinlei.lee@mediatek.com> Link: https://patchwork.kernel.org/project/linux-mediatek/patch/1680072203-10394-1-git-send-email-xinlei.lee@mediatek.com/ Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>