diff options
author | Charlene Liu <charlene.liu@amd.com> | 2018-05-01 19:49:03 -0400 |
---|---|---|
committer | Alex Deucher <alexander.deucher@amd.com> | 2018-05-29 13:23:36 -0500 |
commit | fb5fb63aa91aa7b353e3f7f0031299760f65ecf2 (patch) | |
tree | 2cb4ba3abc16f5d259cf0208a6be789876688ccc /drivers/gpu/drm/amd/display/dc/dce/dce_stream_encoder.c | |
parent | aed15309b9b2009da9dfd209deaf9af8660f50a1 (diff) | |
download | linux-fb5fb63aa91aa7b353e3f7f0031299760f65ecf2.tar.bz2 |
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>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dce/dce_stream_encoder.c')
-rw-r--r-- | drivers/gpu/drm/amd/display/dc/dce/dce_stream_encoder.c | 3 |
1 files changed, 2 insertions, 1 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 0a6d483dc046..c0631756cd89 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) |