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From a277b63d82d23ad4f78e70fa9298055af0e5512c Mon Sep 17 00:00:00 2001
From: Wenjing Liu <Wenjing.Liu@amd.com>
Date: Tue, 7 May 2019 15:18:44 -0400
Subject: [PATCH 2012/2940] 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>
---
drivers/gpu/drm/amd/display/dc/core/dc_stream.c | 3 +++
1 file changed, 3 insertions(+)
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 59b247af5b81..a002e690814f 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;
--
2.17.1
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