From a68d2437d73188abe5d92d551cc63d6b67d8ce57 Mon Sep 17 00:00:00 2001 From: Mykola Lysenko Date: Mon, 7 Dec 2015 13:55:51 -0500 Subject: [PATCH] drm/dp/mst: reply with ACK for UP reqs Currently we reply with NACK to UP requests which might confuse receivers. We haven't seen any actual issues with this but should still respond to UP requests correctly. Signed-off-by: Mykola Lysenko Reviewed-by: Alex Deucher Link: http://patchwork.freedesktop.org/patch/msgid/1449514552-10236-2-git-send-email-harry.wentland@amd.com Signed-off-by: Daniel Vetter --- drivers/gpu/drm/drm_dp_mst_topology.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c index 809959d56d78..64a0a3729643 100644 --- a/drivers/gpu/drm/drm_dp_mst_topology.c +++ b/drivers/gpu/drm/drm_dp_mst_topology.c @@ -1823,7 +1823,7 @@ static int drm_dp_encode_up_ack_reply(struct drm_dp_sideband_msg_tx *msg, u8 req { struct drm_dp_sideband_msg_reply_body reply; - reply.reply_type = 1; + reply.reply_type = 0; reply.req_type = req_type; drm_dp_encode_sideband_reply(&reply, msg); return 0; -- 2.20.1