redonkable/alistair23-linux
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drm/dp/mst: reply with ACK for UP reqs

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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>
This commit is contained in:
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; struct drm_dp_sideband_msg_reply_body reply;
reply.reply_type = 1; reply.reply_type = 0;
reply.req_type = req_type; reply.req_type = req_type;
drm_dp_encode_sideband_reply(&reply, msg); drm_dp_encode_sideband_reply(&reply, msg);
return 0; return 0;