From: Jaehyun Chung <jaehyun.ch...@amd.com>
commit 79940e4d10df9c737a394630968471c632246ee0 upstream.
[Why]
Stream disable sequence incorretly destroys HDCP session while stream is
not blanked and while audio is not muted. This sequence causes a flash
of corruption during mode change and an audio click.
[How]
Change sequence to blank stream before destroying HDCP session. Audio will
also be muted by blanking the stream.
Cc: sta...@vger.kernel.org
Signed-off-by: Jaehyun Chung <jaehyun.ch...@amd.com>
Reviewed-by: Alvin Lee <alvin.l...@amd.com>
Acked-by: Qingqing Zhuo <qingqing.z...@amd.com>
Signed-off-by: Alex Deucher <alexander.deuc...@amd.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
drivers/gpu/drm/amd/display/dc/core/dc_link.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
@@ -3265,12 +3265,11 @@ void core_link_disable_stream(struct pip
core_link_set_avmute(pipe_ctx, true);
}
+ dc->hwss.blank_stream(pipe_ctx);
#if defined(CONFIG_DRM_AMD_DC_HDCP)
update_psp_stream_config(pipe_ctx, true);
#endif
- dc->hwss.blank_stream(pipe_ctx);
-
if (pipe_ctx->stream->signal == SIGNAL_TYPE_DISPLAY_PORT_MST)
deallocate_mst_payload(pipe_ctx);
