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From 29812d6cf0deecb4b9256debd6a256bf71acd1b9 Mon Sep 17 00:00:00 2001
From: Charlene Liu <charlene.liu@amd.com>
Date: Tue, 1 May 2018 19:49:03 -0400
Subject: [PATCH 4525/5725] drm/amd/display: add register offset != 0 check.
Signed-off-by: Charlene Liu <charlene.liu@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
---
drivers/gpu/drm/amd/display/dc/dce/dce_stream_encoder.c | 3 ++-
drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c | 2 +-
2 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_stream_encoder.c b/drivers/gpu/drm/amd/display/dc/dce/dce_stream_encoder.c
index 0a6d483..c063175 100644
--- a/drivers/gpu/drm/amd/display/dc/dce/dce_stream_encoder.c
+++ b/drivers/gpu/drm/amd/display/dc/dce/dce_stream_encoder.c
@@ -72,7 +72,8 @@ static void dce110_update_generic_info_packet(
uint32_t max_retries = 50;
/*we need turn on clock before programming AFMT block*/
- REG_UPDATE(AFMT_CNTL, AFMT_AUDIO_CLOCK_EN, 1);
+ if (REG(AFMT_CNTL))
+ REG_UPDATE(AFMT_CNTL, AFMT_AUDIO_CLOCK_EN, 1);
if (REG(AFMT_VBI_PACKET_CONTROL1)) {
if (packet_index >= 8)
diff --git a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
index 5fcb67a..6b22a53 100644
--- a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
+++ b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
@@ -1004,9 +1004,9 @@ void dce110_disable_stream(struct pipe_ctx *pipe_ctx, int option)
/*don't free audio if it is from retrain or internal disable stream*/
if (option == FREE_ACQUIRED_RESOURCE && dc->caps.dynamic_audio == true) {
/*we have to dynamic arbitrate the audio endpoints*/
- pipe_ctx->stream_res.audio = NULL;
/*we free the resource, need reset is_audio_acquired*/
update_audio_usage(&dc->current_state->res_ctx, dc->res_pool, pipe_ctx->stream_res.audio, false);
+ pipe_ctx->stream_res.audio = NULL;
}
/* TODO: notify audio driver for if audio modes list changed
--
2.7.4
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