1 files changed, 38 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/2012-drm-amd-display-assign-new-stream-id-in-dc_copy_stre.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/2012-drm-amd-display-assign-new-stream-id-in-dc_copy_stre.patch
new file mode 100644
index 00000000..a86b7822
--- /dev/null
+++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/2012-drm-amd-display-assign-new-stream-id-in-dc_copy_stre.patch
@@ -0,0 +1,38 @@
+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
+