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From 946650b1bc9918336e22eb81f7994fd4742ed1f1 Mon Sep 17 00:00:00 2001
From: Andrey Grodzovsky <Andrey.Grodzovsky@amd.com>
Date: Fri, 12 Feb 2016 11:42:41 -0500
Subject: [PATCH 0806/1110] drm/amd/dal: Reset unreference clock when switching
 streams.

Signed-off-by: Andrey Grodzovsky <Andrey.Grodzovsky@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
---
 drivers/gpu/drm/amd/dal/dc/dce110/dce110_hw_sequencer.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/dal/dc/dce110/dce110_hw_sequencer.c b/drivers/gpu/drm/amd/dal/dc/dce110/dce110_hw_sequencer.c
index 810f6d5..4e73ad1 100644
--- a/drivers/gpu/drm/amd/dal/dc/dce110/dce110_hw_sequencer.c
+++ b/drivers/gpu/drm/amd/dal/dc/dce110/dce110_hw_sequencer.c
@@ -776,9 +776,13 @@ static enum dc_status apply_single_controller_ctx_to_hw(
 		/*
 		 * only disable stream in case it was ever enabled
 		 */
-		if (old_pipe_ctx->stream)
+		if (old_pipe_ctx->stream) {
 			core_link_disable_stream(old_pipe_ctx);
 
+			ASSERT(old_pipe_ctx->clock_source);
+			unreference_clock_source(&dc->current_context.res_ctx, old_pipe_ctx->clock_source);
+		}
+
 		/*TODO: AUTO check if timing changed*/
 		if (false == pipe_ctx->clock_source->funcs->program_pix_clk(
 				pipe_ctx->clock_source,
@@ -1499,6 +1503,8 @@ static void reset_single_pipe_hw_ctx(
 	dc->hwss.enable_display_power_gating(
 		pipe_ctx->stream->ctx, pipe_ctx->pipe_idx, dcb,
 			PIPE_GATING_CONTROL_ENABLE);
+
+	pipe_ctx->stream = NULL;
 }
 
 static void reset_hw_ctx(
-- 
2.7.4