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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 <Mykola.Lysenko@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1449514552-10236-2-git-send-email-harry.wentland@amd.com
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
hifive-unleashed-5.1
Mykola Lysenko 2015-12-07 13:55:51 -05:00 committed by Daniel Vetter
parent d55f5320c7
commit a68d2437d7
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/drm_dp_mst_topology.c
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@ -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;