From: Wenjing Liu <Wenjing.Liu@amd.com>
Date: Tue, 7 May 2019 19:18:44 +0000 (-0400)
Subject: drm/amd/display: assign new stream id in dc_copy_stream
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=b1432fcbdbea5de6e4ec2e1b2fa2b3c13ade4785;p=linux.git

drm/amd/display: assign new stream id in dc_copy_stream

[why]
stream id should uniquely identify an instance of stream.
the copy constructor should be treated as a new
stream instance.

[how]
assign a new stream id in this copy constructor.

Signed-off-by: Wenjing Liu <Wenjing.Liu@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_stream.c b/drivers/gpu/drm/amd/display/dc/core/dc_stream.c
index 59b247af5b81e..a002e690814f4 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_stream.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_stream.c
@@ -179,6 +179,9 @@ struct dc_stream_state *dc_copy_stream(const struct dc_stream_state *stream)
 	if (new_stream->out_transfer_func)
 		dc_transfer_func_retain(new_stream->out_transfer_func);
 
+	new_stream->stream_id = new_stream->ctx->dc_stream_id_count;
+	new_stream->ctx->dc_stream_id_count++;
+
 	kref_init(&new_stream->refcount);
 
 	return new_stream;